Automatic door assembly and door operator therefor

• US 6,336,294 B1
• Filed: 02/04/2000
• Issued: 01/08/2002
• Est. Priority Date: 02/04/1999
• Status: Expired due to Term

• Current Assignee: Stanley Works Limited (Stanley Black & Decker, Inc.)
• Original Assignee: Stanley Works Limited (Stanley Black & Decker, Inc.)
• Inventors: Kowalczyk, Thomas M., Hass, Brian D.
• Primary Examiner(s): Cohen, Curtis A.
• Application Number:
  US09/497,730
• Time in Patent Office: 704 Days
• Field of Search: 491/39, 491/40, 493/24, 493/27, 493/33, 493/34, 493/40, 493/41, 493/44, 493/39, 185/40.R
• US Class Current: 49/339
• CPC Class Codes: E05D 15/54 for opening both inwards and outwards
• CPC Class Codes: E05D 2015/482 for panic doors
• CPC Class Codes: E05F 1/105 with a compression spring
• CPC Class Codes: E05F 15/614 operated by meshing gear wheels, one of which being mounted at the wing pivot axis; operated by a motor acting directly on the wing pivot axis
• CPC Class Codes: E05F 15/63 operated by swinging arms
• CPC Class Codes: E05F 2003/228 Arrangements where the end of the closer arm is sliding in a track
• CPC Class Codes: E05F 2015/631 the end of the arm sliding in a track; Slider arms therefor
• CPC Class Codes: E05F 3/104 with cam-and-slide transmission between driving shaft and piston within the closer housing
• CPC Class Codes: E05F 3/224 for assisting in opening the wing
• CPC Class Codes: E05Y 2201/214 Disengaging means
• CPC Class Codes: E05Y 2201/232 by automatically acting means
• CPC Class Codes: E05Y 2201/41 for closing
• CPC Class Codes: E05Y 2201/422 for opening
• CPC Class Codes: E05Y 2201/434 Electromotors; Details thereof
• CPC Class Codes: E05Y 2201/71 Toothed gearing
• CPC Class Codes: E05Y 2400/334 by using pulse generators
• CPC Class Codes: E05Y 2600/454 in or on the motor
• CPC Class Codes: E05Y 2800/113 Power assistance
• CPC Class Codes: E05Y 2800/174 on the left or right side
• CPC Class Codes: E05Y 2800/25 Emergency conditions
• CPC Class Codes: E05Y 2800/72 : Sets of mutually exchangeable elements
• CPC Class Codes: E05Y 2800/746 : emergency or extended
• CPC Class Codes: E05Y 2900/132 : Doors

Abstract

The present application discloses automatic door assemblies and swing operators therefor. One aspect of the disclosure provides a swing door operator that has spring return breakout and from motor driven opening. Another aspect of the disclosure provides a swing door operator that is non-handed with spring return from either direction. Another aspect of the disclosure provides a swing door operator in which spring force is transmitted to the operator output member via a cam structure.

Claims

1. A swing door operator for controlling pivoting movements of a door panel that is to be pivoted about a generally vertical door panel axis from a closed position in a power driven door opening direction and from the closed position in a manually driven breakout door opening direction opposite the power driven door opening direction, said swing door operator comprising:

an operator output member rotatable about an output member axis, said operator output member being constructed and arranged to be operatively connected with the door panel such that rotation of said output member about said output member axis pivots the door panel about the door panel axis thereof;

a motor operatively connected to said operator output member, said motor being constructed and arranged to rotate said output member about said output member axis in a first rotational direction to enable said operator output member to pivot the door panel in the power driven door opening direction from the closed position thereof when said output member is operatively connected to the door panel;

a driving member connected to said output member such that applying force to said driving member rotates said output member about said output member axis, said driver member comprising an offset member spaced radially from said output member axis such that (a) said offset member moves generally circumferentially with respect to said output member axis in a first circumferential direction as said output member rotates about said output member axis in said first rotational direction and (b) said offset member moves generally circumferentially with respect to said output member axis in a second circumferential direction opposite said first circumferential direction as said output member rotates about said output member axis in a second rotational direction opposite said first rotational direction;

a door return compression spring structure positioned in force applying relation with respect to said offset member such that operation of said motor to rotate said output member in said first rotational direction thereof and pivot the door panel when operatively connected thereto in the power driven door opening direction moves said offset member in said first circumferential direction thereof so as to stress said compression spring structure, said compression spring structure being constructed and arranged to thereafter apply a first spring return force to said offset member that tends to move said offset member in said second circumferential direction thereof so as to rotate said output member in the second rotational direction thereof and pivot the door panel when operatively connected thereto opposite the power driven door opening direction towards and into the closed position;

said door return compression spring structure being positioned in said force applying relation with respect to said offset member such that, when said operator output member is operatively connected to the door panel, manual pivoting movement of the door panel from the closed position thereof in the manually driven breakout door opening direction thereof rotates said output member in said second rotational direction thereof and moves said offset member in said second circumferential direction thereof so as to stress said compression spring structure, said compression spring structure being constructed and arranged to thereafter apply a second spring return force to said offset member that tends to rotate said output member in said first rotational direction thereof and pivot the door panel when operatively connected thereto opposite the breakout door opening direction towards and into the closed position.

2. A swing door operator according to claim 1, wherein operation of said motor to rotate said output member in said first rotational direction thereof moves said offset member in said first circumferential direction thereof so as to compress said spring structure and thereafter said spring structure resiliently extends so as to apply said first spring return force to said offset member;

and wherein, when said operator output member is operatively connected to the door panel, pivoting movement of the door panel from the closed position thereof in the breakout door opening direction thereof rotates said output member in said second rotational direction thereof and moves said offset member in said second circumferential direction thereof so as to compress said spring structure and thereafter said spring structure resiliently extends so as to apply said second spring return force to said offset member.

3. A swing door operator according to claim 2, further comprising an input member rotatable about an input member axis extending radially with respect to said output member axis, said input member being coupled to said motor such that operation of said motor rotates said input member, said input member being coupled to said output member such that rotation of said input member about said input member axis rotates said output member about said output member axis.

4. A swing door operator according to claim 3, wherein said spring structure includes only one compression spring.

5. A swing door operator according to claim 4, wherein said driver member is fixed directly to said output member.

6. A swing door operator according to claim 5, wherein said driver member is generally circular.

7. A swing door operator according to claim 6, further comprising a cam structure engaging said offset member of said driver member in a camming relationship, said spring being engaged with said cam structure.

8. A swing door operator according to claim 6, wherein said motor has a motor output member and said motor is constructed and arranged to rotate said motor output member,

said swing door operator further comprising a reduction transmission connected between said motor output member and said input member such that said transmission rotates said input member at a lower rotational speed than a rotational speed at which motor rotates said motor output member and at a higher torque than a torque at which said motor rotates said motor output member.

9. A swing door operator according to claim 8, wherein said reduction transmission comprises (a) an orbit gear arranged generally coaxially with respect to a transmission axis, (b) a planetary gear carrier positioned radially inwardly of said orbit gear for rotation about said transmission axis and having a planetary gear mounting portion offset generally radially from said transmission axis, and (c) a planetary gear rotatably mounted to said mounting portion of said gear carrier such that said planet gear rotates relative to said gear carrier about a planet gear axis which is offset generally radially from said transmission axis;

said planet gear being operatively connected to said motor output member such that rotation of said motor output member rotates said planet gear about said planet gear axis;

said planet gear being engaged with an interior surface of said orbit gear which faces generally radially inwardly with respect to said transmission axis such that rotation of said planet gear causes said planet gear to roll along said interior surface of said orbit gear generally circumferentially with respect to said transmission axis to rotate said gear carrier about said transmission axis;

said planet gear carrier being operatively connected to input member such that rotation of said planet gear carrier as a result of said planet gear being rotated by said motor output member rotates said input member to effect rotation of said operator output member about the output member axis.

10. A swing door operator according to claim 4, wherein said spring is mounted in an encircling relation about an exterior of said motor.

11. A swing door operator according to claim 4, wherein said motor has a rotatable motor output member that rotates during operation of said motor and wherein said swing door operator further comprises a reduction transmission connected between said motor output member and said input member such that said transmission rotates said input member at a lower rotational speed than the rotational speed at which said motor rotates said motor output member and at a higher torque than a torque at which said motor rotates said motor output member;

said spring being mounted in encircling relation about both an exterior of said motor and an exterior of said reduction transmission.

12. A swing door operator according to claim 11, wherein said reduction transmission comprises (a) an orbit gear arranged generally coaxially with respect to a transmission axis, (b) a planetary gear carrier positioned radially inwardly of said orbit gear for rotation about said transmission axis and having a planetary gear mounting portion offset generally radially from said transmission axis, and (c) a planetary gear rotatably mounted to said mounting portion of said gear carrier such that said planet gear rotates relative to said gear carrier about a planet gear axis which is offset generally radially from said transmission axis;

said planet gear being operatively connected to said motor output member such that rotation of said motor output member rotates said planet gear about said planet gear axis;

said planet gear being engaged with an interior surface of said orbit gear which faces generally radially inwardly with respect to said transmission axis such that rotation of said planet gear causes said planet gear to roll along said interior surface of said orbit gear generally circumferentially with respect to said transmission axis to rotate said gear carrier about said transmission axis;

said planet gear carrier being operatively connected to input member such that rotation of said planet gear carrier as a result of said planet gear being rotated by said motor output member rotates said input member to effect rotation of said operator output member about the output member axis.

13. A swing door operator according to claim 1, further comprising an input member rotatable about an input axis that extends at an angle with respect to said output member axis, said input member being coupled to said motor such that operation of said motor rotates said input member about said input member axis;

said operator output member having a set of gear teeth operatively associated therewith and wherein said input member having a set of gear teeth operatively associated therewith, said sets of gear teeth being intermeshed such that rotation of said input member about said input member axis rotates said output member about said output member axis;

said motor being constructed and arranged to rotate said input member about said input member axis such that, when said output member is operatively connected to the door panel, said input member rotates said output member in the first rotating direction thereof via said intermeshed sets of gear teeth so as to pivot the door panel in the power driven door opening direction, said compression spring structure being constructed and arranged to thereafter apply the aforesaid first spring return force that tends to move said offset member in said second circumferential direction thereof so as to rotate said output member in the second rotational direction thereof without transmission of said first spring return force from said input member to said output member via said intermeshed sets of gear teeth.

14. A swing door operator according to claim 13, wherein operation of said motor to rotate said output member in said first rotational direction thereof moves said offset member in said first circumferential direction thereof so as to compress said spring structure and thereafter said spring structure resiliently extends so as to apply said first spring return force to said offset member;

and wherein, when said output member is operatively connected to the door panel, pivoting movement of the door panel from the closed position thereof in the breakout door opening direction thereof rotates said output member in said second rotational direction thereof and moves said offset member in said second circumferential direction thereof so as to compress said spring structure and thereafter said spring structure resiliently extends so as to apply said second spring return force to said offset member.

15. A swing door operator according to claim 14, wherein said input member axis extends radially with respect to said output member axis.

16. A swing door operator according to claim 15, wherein said spring structure includes only one compression spring.

17. A swing door operator according to claim 16, wherein said set of gear teeth operatively associated with said output member are provided on said driver member.

18. A swing door operator according to claim 17, wherein said input member carries a bevel gear providing said set of gear teeth operatively associated with said input member.

19. A swing door operator according to claim 18, wherein said driver member is fixed directly to said output member.

20. A swing door operator according to claim 19, wherein said driver member is generally circular.

21. A swing door operator according to claim 16, further comprising a cam structure engaging said offset member of said driver member in a camming relationship, said spring being engaged with said cam structure.

22. A swing door operator according to claim 16, wherein said motor has a motor output member and said motor is constructed and arranged to rotate said motor output member,

said swing door operator further comprising a reduction transmission connected between said motor output member and said input member such that said transmission rotates said input member at a lower rotational speed than a rotational speed at which motor rotates said motor output member and at a higher torque than a torque at which said motor rotates said motor output member.

23. A swing door operator according to claim 22, wherein said reduction transmission comprises (a) an orbit gear arranged generally coaxially with respect to a transmission axis, (b) a planetary gear carrier positioned radially inwardly of said orbit gear for rotation about said transmission axis and having a planetary gear mounting portion offset generally radially from said transmission axis, and (c) a planetary gear rotatably mounted to said mounting portion of said gear carrier such that said planet gear rotates relative to said gear carrier about a planet gear axis which is offset generally radially from said transmission axis;

said planet gear being operatively connected to said motor output member such that rotation of said motor output member rotates said planet gear about said planet gear axis;

said planet gear being engaged with an interior surface of said orbit gear which faces generally radially inwardly with respect to said transmission axis such that rotation of said planet gear causes said planet gear to roll along said interior surface of said orbit gear generally circumferentially with respect to said transmission axis to rotate said gear carrier about said transmission axis;

said planet gear carrier being operatively connected to input member such that rotation of said planet gear carrier as a result of said planet gear being rotated by said motor output member rotates said input member to effect rotation of said operator output member about the output member axis.

24. An swing door operator according to claim 16, wherein said spring is mounted in an encircling relation about an exterior of said motor.

25. A swing door operator according to claim 16 wherein said motor has a rotatable motor output member that rotates during operation of said motor and wherein said swing door operator further comprises a reduction transmission connected between said motor output member and said input member such that (a) said transmission rotates said input member at a lower rotational speed than the rotational speed at which said motor rotates said motor output member and at a higher torque than a torque at which said motor rotates said motor output member.

26. A swing door operator according to claim 25, wherein said reduction transmission comprises (a) an orbit gear arranged generally coaxially with respect to a transmission axis, (b) a planetary gear carrier positioned radially inwardly of said orbit gear for rotation about said transmission axis and having a planetary gear mounting portion offset generally radially from said transmission axis, and (c) a planetary gear rotatably mounted to said mounting portion of said gear carrier such that said planet gear rotates relative to said gear carrier about a planet gear axis which is offset generally radially from said transmission axis;

said planet gear being operatively connected to said motor output member such that rotation of said motor output member rotates said planet gear about said planet gear axis;

said planet gear being engaged with an interior surface of said orbit gear which faces generally radially inwardly with respect to said transmission axis such that rotation of said planet gear causes said planet gear to roll along said interior surface of said orbit gear generally circumferentially with respect to said transmission axis to rotate said gear carrier about said transmission axis;

said planet gear carrier being operatively connected to input member such that rotation of said planet gear carrier as a result of said planet gear being rotated by said motor output member rotates said input member to effect rotation of said operator output member about the output member axis.

27. A swing door operator for controlling pivoting movements of a door panel that is to be pivoted about a generally vertical door panel axis from a closed position in a power driven door opening direction and from the closed position in a manually driven breakout door opening direction opposite the power driven door opening direction, said swing door operator comprising:

an operator output member rotatable about an output member axis, said operator output member being constructed and arranged to be operatively connected with the door panel such that rotation of said output member about said output member axis pivots the door panel about the door panel axis thereof;

a motor operatively connected to said operator output member, said motor being constructed and arranged to rotate said output member about said output member axis in a first rotational direction to enable said operator output member to pivot the door panel in the power driven door opening direction from the closed position thereof when said output member is operatively connected to the door panel;

a driving member connected to said output member such that applying force to said driving member rotates said output member about said output member axis;

a cam structure having a cam surface engaged with said driving member in a camming relationship;

a door return compression spring structure positioned in force applying relation with respect to said cam structure, said cam structure and said driving member being constructed and arranged such that operation of said motor to rotate said output member in said first rotational direction thereof and pivot the door panel when operatively connected thereto in the power driven door opening direction causes said driving member to cam said cam surface so as to move said cam structure to stress said compression spring structure, said compression spring structure being constructed and arranged to thereafter apply a first spring return force to said cam structure that tends to cause said cam surface to cam said driving member so as to rotate said output member in a second rotational direction thereof and pivot the door panel when operatively connected thereto opposite the power driven door opening direction towards and into the closed position;

said cam structure and said driving member being constructed and arranged such that, when said operator output member is operatively connected to the door panel, manual pivoting movement of the door panel from the closed position thereof in the manually driven breakout door opening direction thereof rotates said output member in said second rotational direction thereof and causes said driving member to cam said cam surface so as to move said cam structure to stress said compression spring structure, said compression spring structure being constructed and arranged to thereafter apply a second spring return force to said cam structure that tends to cause said cam surface to cam said driving member so as to rotate said output member in said first rotational direction thereof and pivot the door panel when operatively connected thereto opposite the breakout door opening direction towards and into the closed position.

28. A swing door operator according to claim 27, further comprising an input member rotatable about an input member axis extending radially with respect to said output member axis, said input member being coupled to said motor such that operation of said motor rotates said input member, said input member being coupled to said output member such that rotation of said input member about said input member axis rotates said output member about said output member axis.

29. A swing door operator according to claim 28, wherein said spring structure includes only one compression spring.

30. A swing door operator according to claim 29, wherein said driver member is fixed directly to said output member.

31. A swing door operator according to claim 30, wherein said motor has a motor output member and said motor is constructed and arranged to rotate said motor output member,

said swing door operator further comprising a reduction transmission connected between said motor output member and said input member such that said transmission rotates said input member at a lower rotational speed than a rotational speed at which motor rotates said motor output member and at a higher torque than a torque at which said motor rotates said motor output member.

32. A swing door operator according to claim 31, wherein said reduction transmission comprises (a) an orbit gear arranged generally coaxially with respect to a transmission axis, (b) a planetary gear carrier positioned radially inwardly of said orbit gear for rotation about said transmission axis and having a planetary gear mounting portion offset generally radially from said transmission axis, and (c) a planetary gear rotatably mounted to said mounting portion of said gear carrier such that said planet gear rotates relative to said gear carrier about a planet gear axis which is offset generally radially from said transmission axis;

said planet gear being operatively connected to said motor output member such that rotation of said motor output member rotates said planet gear about said planet gear axis;

said planet gear being engaged with an interior surface of said orbit gear which faces generally radially inwardly with respect to said transmission axis such that rotation of said planet gear causes said planet gear to roll along said interior surface of said orbit gear generally circumferentially with respect to said transmission axis to rotate said gear carrier about said transmission axis;

said planet gear carrier being operatively connected to input member such that rotation of said planet gear carrier as a result of said planet gear being rotated by said motor output member rotates said input member to effect rotation of said operator output member about the output member axis.

33. An automatic swing door assembly for installation in a wall of a building having an opening formed therethrough, said assembly comprising:

a frame assembly constructed and arranged to be mounted at the opening of said wall;

a door panel pivotally mounted to said frame assembly for pivotal movement about a generally vertically extending door panel axis from a closed position obstructing travel through the opening of said wall in a power driven door opening direction to a normal open position permitting travel through the opening of said wall and from said closed position in a manually driven breakout door opening direction opposite the power driven door opening direction to a breakout open position permitting travel through the opening of said wall;

a swing door operator comprising;

an operator output member rotatable about an output member axis, said operator output member being operatively connected with the door panel such that rotation of said output member about said output member axis pivots the door panel about the door panel axis thereof,

a motor constructed and arranged to rotate said output member about said output member axis in a first rotational direction so as to pivot the door panel in the power driven door opening direction from the closed position thereof,

a driving member connected to said output member such that applying force to said driving member rotates said output member about said output member axis, said driver member comprising an offset member spaced radially from said output member axis such that (a) said offset member moves generally circumferentially with respect to said output member axis in a first circumferential direction as said output member rotates about said output member axis in said first rotational direction and (b) said offset member moves generally circumferentially with respect to said output member axis in a second circumferential direction opposite said first circumferential direction as said output member rotates about said output member axis in a second rotational direction opposite said first rotational direction;

a door return compression spring structure positioned in force applying relation with respect to said offset member such that operation of said motor to rotate said output member in said first rotational direction thereof and pivot the door in the power driven door opening direction moves said offset member in said first circumferential direction thereof so as to stress said compression spring structure, said compression spring structure being constructed and arranged to thereafter apply a first spring return force to said offset member that tends to move said offset member in said second circumferential direction thereof so as to rotate said output member in the second rotational direction thereof and pivot the door panel operatively connected thereto opposite the power driven door opening direction towards and into the closed position;

said door return compression spring structure being positioned in said force applying relation with respect to said offset member such that manual pivoting movement of the door panel from the closed position thereof in the manually driven breakout door opening direction thereof rotates said output member in said second rotational direction thereof and moves said offset member in said second circumferential direction thereof so as to stress said compression spring structure, said compression spring structure being constructed and arranged to thereafter apply a second spring return force to said offset member that tends to rotate said output member in said first rotational direction thereof and pivot the door panel operatively connected thereto opposite the breakout door opening direction towards and into the closed position;

an input device operable to transmit a door opening signal in response to detecting a presence of an object adjacent said door assembly; and

a controller communicated to said input device, said controller being operable to receive said door opening signal from said input device and to responsively control operation of said motor so as to cause said door operator to pivot said door panel in said first door opening direction thereof.

34. An automatic door assembly according to claim 33, wherein operation of said motor to rotate said output member in said first rotational direction thereof moves said offset member in said first circumferential direction thereof so as to compress said spring structure and thereafter said spring structure resiliently extends so as to apply said first spring return force to said offset member;

and wherein pivoting movement of the door panel from the closed position thereof in the breakout door opening direction thereof rotates said output member in said second rotational direction thereof and moves said offset member in said second circumferential direction thereof so as to compress said spring structure and thereafter said spring structure resiliently extends so as to apply said second spring return force to said offset member.

35. An automatic door assembly according to claim 34, further comprising an input member rotatable about an input member axis extending radially with respect to said output member axis, said input member being coupled to said motor such that operation of said motor rotates said input member, said input member being coupled to said output member such that rotation of said input member about said input member axis rotates said output member about said output member axis.

36. An automatic door assembly according to claim 35, wherein said spring structure includes only one compression spring.

37. An automatic door assembly according to claim 36, wherein said swing door operator further comprises a cam structure engaging said offset member of said driver member in a camming relationship, said spring being engaged with said cam structure.

38. An automatic door assembly according to claim 34, wherein said motor has a motor output member and said motor is constructed and arranged to rotate said motor output member,

said swing door operator further comprising a reduction transmission connected between said motor output member and said input member such that said transmission rotates said input member at a lower rotational speed than a rotational speed at which motor rotates said motor output member and at a higher torque than a torque at which said motor rotates said motor output member.

39. An automatic door assembly according to claim 38, wherein said reduction transmission comprises (a) an orbit gear arranged generally coaxially with respect to a transmission axis, (b) a planetary gear carrier positioned radially inwardly of said orbit gear for rotation about said transmission axis and having a planetary gear mounting portion offset generally radially from said transmission axis, and (c) a planetary gear rotatably mounted to said mounting portion of said gear carrier such that said planet gear rotates relative to said gear carrier about a planet gear axis which is offset generally radially from said transmission axis;

said planet gear being operatively connected to said motor output member such that rotation of said motor output member rotates said planet gear about said planet gear axis;

said planet gear being engaged with an interior surface of said orbit gear which faces generally radially inwardly with respect to said transmission axis such that rotation of said planet gear causes said planet gear to roll along said interior surface of said orbit gear generally circumferentially with respect to said transmission axis to rotate said gear carrier about said transmission axis;

said planet gear carrier being operatively connected to input member such that rotation of said planet gear carrier as a result of said planet gear being rotated by said motor output member rotates said input member to effect rotation of said operator output member about the output member axis.

40. An automatic door assembly according to claim 39, further comprising an input member rotatable about an input axis that extends to an angle with respect to said output member axis, said input member being coupled to said motor such that operation of said motor rotates said input member about said input member axis;

said operator output member having a set of gear teeth operatively associated therewith and wherein said input member having a set of gear teeth operatively associated therewith, said sets of gear teeth being intermeshed such that rotation of said input member about said input member axis rotates said output member about said output member axis;

said motor being constructed and arranged to rotate said input member about said input member axis such that said input member rotates said output member in the first rotating direction thereof via said intermeshed sets of gear teeth so as to pivot the door panel in the power driven door opening direction, said compression spring structure being constructed and arranged to thereafter apply the aforesaid first spring return force that tends to move said offset member in said second circumferential direction thereof so as to rotate said output member in the second rotational direction thereof without transmission of said first spring return force from said input member to said output member via said intermeshed sets of gear teeth.

41. An automatic door assembly according to claim 40, wherein operation of said motor to rotate said output member in said first rotational direction thereof moves said offset member in said first circumferential direction thereof so as to compress said spring structure and thereafter said spring structure resiliently extends so as to apply said first spring return force to said offset member;

and wherein pivoting movement of the door panel from the closed position thereof in the breakout door opening direction thereof rotates said output member in said second rotational direction thereof and moves said offset member in said second circumferential direction thereof so as to compress said spring structure and thereafter said spring structure resiliently extends so as to apply said second spring return force to said offset member.

42. An automatic door assembly according to claim 41, wherein said set of gear teeth operatively associated with said output member are provided on said driver member.

43. An automatic door assembly according to claim 42, wherein said input member carries a bevel gear providing said set of gear teeth operatively associated with said input member.

44. An automatic swing door assembly for installation in a wall of a building having an opening formed therethrough, said assembly comprising:

a frame assembly constructed and arranged to be mounted at the opening of said wall;

a door panel pivotally mounted to said frame assembly for pivotal movement about a generally vertically extending door panel axis from a closed position obstructing travel through the opening of said wall in a power driven door opening direction to a normal open position permitting travel through the opening of said wall and from said closed position in a manually driven breakout door opening direction opposite the power driven door opening direction to a breakout open position permitting travel through the opening of said wall;

a swing door operator comprising;

an operator output member rotatable about an output member axis, said operator output member being operatively connected with the door panel such that rotation of said output member about said output member axis pivots the door panel about the door panel axis thereof;

a motor constructed and arranged to rotate said output member about said output member axis in a first rotating direction such that said operator output member pivots the door panel in the power driven door opening direction from the closed position thereof;

a driving member connected to said output member such that applying force to said driving member rotates said output member about said output member axis;

a cam structure having a cam surface engaged with said driving member in a camming relationship;

a door return compression spring structure positioned in force applying relation with respect to said cam structure, said cam structure and said driving member being constructed and arranged such that operation of said motor to rotate said output member in said first rotational direction thereof and pivot the door in the power driven door opening direction causes said driving member to cam said cam structure so as to move said cam structure to stress said compression spring structure, said compression spring structure being constructed and arranged to thereafter apply a first spring return force to said cam structure that tends to cause said cam surface to cam said driving member so as to rotate said output member in the second rotational direction thereof and pivot the door panel operatively connected thereto opposite the power driven door opening direction towards and into the closed position;

said cam structure and said driving member being constructed and arranged such that manual pivoting movement of the door panel from the closed position thereof in the manually driven breakout door opening direction thereof rotates said output member in said second rotational direction thereof and causes said driving member to cam said cam surface so as to move said cam structure to stress said compression spring structure, said compression spring structure being constructed and arranged to thereafter apply a second spring return force to said cam structure that tends to cause said cam surface to cam said driving member so as to rotate said output member in said first rotational direction thereof and pivot the door panel operatively connected thereto opposite the breakout door opening direction towards and into the closed position;

an input device operable to transmit a door opening signal in response to detecting a presence of an object adjacent said door assembly; and

a controller communicated to said input device, said controller being operable to receive said door opening signal from said input device and to responsively control operation of said motor so as to cause said door operator to pivot said door panel in said first door opening direction thereof.

45. An automatic door assembly according to claim 44, wherein said operator further comprises an input member rotatable about an input member axis extending radially with respect to said output member axis, said input member being coupled to said motor such that operation of said motor rotates said input member, said input member being coupled to said output member such that rotation of said input member about said input member axis rotates said output member about said output member axis.

46. An automatic door assembly according to claim 45, wherein said spring structure includes only one compression spring.

47. An automatic door assembly according to claim 46, wherein said driver member is fixed directly to said output member.

48. An automatic door assembly according to claim 44, wherein said motor has a motor output member and said motor is constructed and arranged to rotate said motor output member,

said swing door operator further comprising a reduction transmission connected between said motor output member and said input member such that said transmission rotates said input member at a lower rotational speed than a rotational speed at which motor rotates said motor output member and at a higher torque than a torque at which said motor rotates said motor output member.

49. An automatic door assembly according to claim 48, wherein said reduction transmission comprises (a) an orbit gear arranged generally coaxially with respect to a transmission axis, (b) a planetary gear carrier positioned radially inwardly of said orbit gear for rotation about said transmission axis and having a planetary gear mounting portion offset generally radially from said transmission axis, and (c) a planetary gear rotatably mounted to said mounting portion of said gear carrier such that said planet gear rotates relative to said gear carrier about a planet gear axis which is offset generally radially from said transmission axis;

said planet gear being operatively connected to said motor output member such that rotation of said motor output member rotates said planet gear about said planet gear axis;

said planet gear being engaged with an interior surface of said orbit gear which faces generally radially inwardly with respect to said transmission axis such that rotation of said planet gear causes said planet gear to roll along said interior surface of said orbit gear generally circumferentially with respect to said transmission axis to rotate said gear carrier about said transmission axis;

said planet gear carrier being operatively connected to input member such that rotation of said planet gear carrier as a result of said planet gear being rotated by said motor output member rotates said input member to effect rotation of said operator output member about the output member axis.

50. A non-handed swing door operator for controlling pivoting movements of a door panel that pivots about a generally vertical door axis from a closed position to an open position, said swing door operator comprising:

an operator output member rotatable in first and second operator rotational directions about an operator output member axis, said operator output member being constructed and arranged to be operatively connected with the door panel such that rotation of said output member pivots the door panel about the door panel axis thereof;

a reversible motor coupled to said operator output member, said motor being constructed and arranged to rotate said operator output member in a selected one of said first and second operator rotational directions;

a driving member connected to said output member such that applying force to said driving member rotates said output member about said output member axis, said driving member comprising an offset member spaced radially from said output member axis such that (a) said offset member moves generally circumferentially with respect to said output member axis in a first circumferential direction as said output member rotates about said output member axis in said first operator rotational direction and (b) said offset member moves generally circumferentially with respect to said output member axis in a second circumferential direction opposite said first circumferential direction as said output member rotates about said output member axis in said second operator rotational direction;

a door return compression spring structure positioned in force applying relation with respect to said offset member such that operation of said motor to rotate said output member in said first operator rotational direction thereof moves said offset member in said first circumferential direction thereof so as to stress said spring structure, said spring structure being constructed and arranged to thereafter apply a first spring return force to said offset member that tends to move said offset member in said second circumferential direction thereof to rotate said operator output member in the second operator rotational direction thereof;

said door return compression spring structure being positioned in said force applying relation with respect to said offset member such that operation of said motor to rotate said output member in said second operator rotational direction thereof moves said offset member in said second circumferential direction thereof so as to stress said spring structure, said spring structure being constructed and arranged to thereafter apply a second spring return force to said offset member that tends to move said offset member in said first circumferential direction thereof to rotate said operator output member in the first operator rotational direction thereof.

51. A non-handed swing door operator according to claim 50, wherein said motor has a rotatable motor output member that rotates during operation of said motor and further comprising an input member coupled to said motor output member, said input member being rotatable about an input member axis extending at an angle with respect to said operator output member axis under rotation of said motor output member, said input member being coupled with said operator output member such that rotation of said input member about said input member axis rotates said operator output member about said operator output member axis.

52. A non-handed swing door operator according to claim 51, wherein said input member axis extends radially with respect to said output member axis.

53. A non-handed swing door operator according to claim 52, further comprising a reduction transmission connected between said motor output member and said input member such that (a) said transmission rotates said input member to effect rotation of said operator output member in said first operator rotational direction at a lower rotational speed than the rotational speed at which said motor rotates said motor output member in said first motor rotational direction and at a higher torque than a torque at which said motor rotates said motor output member in said first motor rotational direction and (b) said transmission rotates said input member to effect rotation of said operator output member in said second operator rotational direction at a lower rotational speed than a rotational speed at which said motor rotates said motor output member in said second motor rotational direction and at a higher torque than a torque at which said motor rotates said motor output member in said second motor rotational direction.

54. A non-handed swing door operator according to claim 53, wherein said reduction transmission comprises (a) an orbit gear arranged generally coaxially with respect to a transmission axis, (b) a planetary gear carrier positioned radially inwardly of said orbit gear for rotation about said transmission axis and having a planetary gear mounting portion offset generally radially from said transmission axis, and (c) a planetary gear rotatably mounted to said mounting portion of said gear carrier such that said planet gear rotates relative to said gear carrier about a planet gear axis which is offset generally radially from said transmission axis;

said planet gear being operatively connected to said motor output member such that (a) rotation of said motor output member in the first motor rotational direction thereof rotates said planet gear in a first planet gear rotating direction about said planet gear axis and (b) rotation of said motor output member in the second motor rotational direction thereof rotates said planet gear in a second planet gear rotating direction about said planet gear axis opposite said first planet gear rotating direction;

said planet gear being engaged with an interior surface of said orbit gear which faces generally radially inwardly with respect to said transmission axis such that (a) rotation of said planet gear in said first planet gear rotating direction causes said planet gear to roll along said interior surface of said orbit gear generally circumferentially with respect to said transmission axis to rotate said gear carrier in a first carrier rotating direction about said transmission axis and (b) rotation of said planet gear in said second planet gear rotating direction causes said planet gear to roll along said interior surface of said orbit gear generally circumferentially with respect to said transmission axis to rotate said gear carrier in a second carrier rotating direction about said transmission axis opposite said first carrier rotating direction;

said planet gear carrier being operatively connected to input member such that (a) rotation of said planet gear carrier in said first carrier rotating direction thereof as a result of said planet gear being rotated in said first planet rotating direction thereof by said motor output member rotates said input member to effect rotation of said operator output member in the first operator rotational direction and (b) rotation of said planet gear carrier in said second carrier rotating direction thereof as a result of said planet gear being rotated in said first planet rotating direction thereof by said motor output member rotates said input member to effect rotation of said operator output member in the second operator rotational direction thereof.

55. A non-handed swing door operator according to claim 54, wherein said reversible motor is a reversible electric motor.

56. A non-handed swing door operator according to claim 55, wherein operation of said motor to rotate said motor output member in said first motor rotational direction thereof and thus said operator output member in said first operator rotational direction thereof moves said offset member in said first circumferential direction so as to compress said spring structure and thereafter said spring structure resiliently extends so as to apply said first spring return force to said offset member;

and wherein operation of said motor to rotate said motor output member in said second motor rotational direction thereof and thus said operator output member in said second operator rotational direction thereof moves said offset member in said second circumferential direction thereof so as to compress said spring structure and thereafter said spring structure resiliently extends so as to apply said second spring return force to said offset member.

57. A non-handed swing door operator according to claim 56, wherein said spring structure includes only one compression spring.

58. A non-handed swing door operator according to claim 57, wherein said driver member is fixed directly to said output member.

59. A non-handed swing door operator according to claim 58, wherein said driver member is generally circular.

60. A non-handed swing door operator according to claim 57, further comprising a camming member engaging said offset member of said driver member in a camming relationship, said spring being engaged with said camming member.

61. A non-handed swing door operator according to claim 50, wherein when said operator output member is operatively connected to a door panel that is to be pivoted about a generally vertical door panel axis from a closed position in a power driven door opening direction and in a manually driven breakout door opening direction opposite the power driven door opening direction in such a manner that rotation of said operator output member in said first operator rotational direction thereof pivots the door panel in the power driven door opening direction thereof (a) operation of said motor to rotate said operator output member in said first operator rotational direction thereof so as to pivot the door in the power driven door opening direction moves said offset member in said first circumferential direction thereof so as to stress said compression spring structure and said compression spring structure thereafter applies said first spring return force to said offset member that tends to rotate said output member in the second operator rotational direction thereof and pivot the door panel operatively connected thereto opposite the power driven door opening direction towards and into the closed position, and (b) manual pivoting movement of the door panel from the closed position thereof in the breakout door opening direction thereof rotates said output member in said second operator rotational direction thereof and moves said offset member in said second circumferential direction thereof so as to stress said compression spring structure and said compression spring structure thereafter applies said second spring return force to said offset member that tends to rotate said output member in said first operator rotational direction thereof and pivot the door panel operatively connected thereto opposite the breakout door opening direction towards and into the closed position.

62. A non-handed swing door operator according to claim 61, wherein said motor has a rotatable motor output member that rotates during operation of said motor and further comprising an input member rotatable about an input member axis extending at an angle with respect to said operator output member axis, said input member being coupled with said operator output member such that rotation of said input member about said input member axis rotates said operator output member about said operator output member axis.

63. A non-handed swing door operator according to claim 62, wherein said input member axis extends radially with respect to said operator output member axis.

64. A non-handed swing door operator according to claim 63, further comprising a reduction transmission connected between said motor output member and said input member such that (a) said transmission rotates said input member to effect rotation of said operator output member in said first operator rotational direction at a lower rotational speed than the rotational speed at which said motor rotates said motor output member in said first motor rotational direction and at a higher torque than a torque at which said motor rotates said motor output member in said first motor rotational direction and (b) said transmission rotates said input member to effect rotation of said operator output member in said second operator rotational direction at a lower rotational speed than a rotational speed at which said motor rotates said motor output member in said second motor rotational direction and at a higher torque than a torque at which said motor rotates said motor output member in said second motor rotational direction.

65. A non-handed swing door operator according to claim 64, wherein said reduction transmission comprises (a) an orbit gear arranged generally coaxially with respect to a transmission axis, (b) a planetary gear carrier positioned radially inwardly of said orbit gear for rotation about said transmission axis and having a planetary gear mounting portion offset generally radially from said transmission axis, and (c) a planetary gear rotatably mounted to said mounting portion of said gear carrier such that said planet gear rotates relative to said gear carrier about a planet gear axis which is offset generally radially from said transmission axis;

said planet gear being operatively connected to said motor output member such that (a) rotation of said motor output member in the first motor rotational direction thereof rotates said planet gear in a first planet gear rotating direction about said planet gear axis and (b) rotation of said motor output member in the second motor rotational direction thereof rotates said planet gear in a second planet gear rotating direction about said planet gear axis opposite said first planet gear rotating direction;

said planet gear being engaged with an interior surface of said orbit gear which faces generally radially inwardly with respect to said transmission axis such that (a) rotation of said planet gear in said first planet gear rotating direction causes said planet gear to roll along said interior surface of said orbit gear generally circumferentially with respect to said transmission axis to rotate said gear carrier in a first carrier rotating direction about said transmission axis and (b) rotation of said planet gear in said second planet gear rotating direction causes said planet gear to roll along said interior surface of said orbit gear generally circumferentially with respect to said transmission axis to rotate said gear carrier in a second carrier rotating direction about said transmission axis opposite said first carrier rotating direction;

said planet gear carrier being operatively connected to input member such that (a) rotation of said planet gear carrier in said first carrier rotating direction thereof as a result of said planet gear being rotated in said first planet rotating direction thereof by said motor output member rotates said input member to effect rotation of said operator output member in the first operator rotational direction and (b) rotation of said planet gear carrier in said second carrier rotating direction thereof as a result of said planet gear being rotated in said first planet rotating direction thereof by said motor output member rotates said input member to effect rotation of said operator output member in the second operator rotational direction thereof.

66. A non-handed swing door operator according to claim 65, wherein said reversible motor is a reversible electric motor.

67. A non-handed swing door operator according to claim 66, wherein operation of said motor to rotate said motor output member in said first motor rotational direction thereof and thus said output member in said first operator rotational direction thereof moves said offset member in said first circumferential direction thereof so as to compress said spring structure and thereafter said spring structure resiliently extends so as to apply said first spring return force to said driver member;

and wherein operation of said motor to rotate said motor output member in said second motor rotational direction thereof and thus said output member in said second operator rotational direction thereof moves said offset member in said second circumferential direction thereof so as to compress said spring structure and thereafter said spring structure resiliently extends so as to apply said second spring return force to said driver member.

68. A non-handed swing door operator according to claim 67, wherein said spring structure includes only one compression spring.

69. A non-handed swing door operator according to claim 68, wherein said driver member is fixed directly to said output member.

70. A non-handed swing door operator according to claim 68, wherein said driver member is generally circular.

71. A non-handed swing door operator according to claim 55, wherein said operator output member has a set of gear teeth operatively associated therewith and wherein said input member has a set of gear teeth operatively associated therewith, said sets of gear teeth being intermeshed such that rotation of said input member about said input member axis rotates said output member about said output member axis;

said motor being constructed and arranged to rotate said input member about said input member axis such that, when said output member is operatively connected to the door panel, said input member rotates said output member in the first operator rotational direction thereof via said intermeshed sets of gear teeth, said compression spring structure being constructed and arranged to thereafter apply the aforesaid first spring return force that tends to move said offset member in said second circumferential direction so as to rotate said output member in the second operator rotational direction thereof without transmission of said first spring return force from said input member to said output member via said intermeshed sets of gear teeth;

said motor being constructed and arranged to rotate said input member about said input member axis such that, when said output member is operatively connected to the door panel, said input member rotates said output member in the second operator rotational direction thereof via said intermeshed sets of gear teeth, said compression spring structure being constructed and arranged to thereafter apply the aforesaid second spring return force that tends to move said offset member in said first circumferential direction thereof so as to rotate said output member in the first rotational direction thereof without transmission of said second spring return force from said input member to said output member via said intermeshed sets of gear teeth.

72. A non-handed swing door operator according to claim 71, wherein said input member axis extends radially with respect to said output member axis.

73. A non-handed swing door operator according to claim 71, wherein said spring structure includes only one compression spring.

74. A non-handed swing door operator according to claim 73, wherein said set of gear teeth operatively associated with said output member are provided on said driver member.

75. A non-handed swing door operator according to claim 74, wherein said input member carries a bevel gear providing said set of gear teeth operatively associated with said input member.

76. A non-handed swing door operator according to claim 75, wherein said driver member is fixed directly to said output member.

77. A non-handed swing door operator according to claim 76, wherein said driver member is generally circular.

78. A non-handed swing door operator for controlling pivoting movements of a door panel that pivots about a generally vertical door axis from a closed position to an open position, said swing door operator comprising:

an operator output member rotatable in first and second operator rotational directions about an operator output member axis, said operator output member being constructed and arranged to be operatively connected with the door panel such that rotation of said output member pivots the door panel about the door panel axis thereof;

a reversible motor coupled to said operator output member, said motor being constructed and arranged to rotate said operator output member in a selected one of said first and second operator rotational directions;

a driving member connected to said output member such that applying force to said driving member rotates said output member about said output member axis;

a cam structure having a cam surface engaged with said driving member in a camming relationship;

a door return compression spring structure positioned in force applying relation with respect to said cam structure, said cam structure and said driving member being constructed and arranged such that operation of said motor to rotate said output member in said first operator rotational direction thereof causes said driving member to cam said cam surface so as to move said cam structure to stress said spring structure, said spring structure being constructed and arranged to thereafter apply a first spring return force to said cam structure that tends to cause said cam surface to cam said driver member so as to rotate said operator output member in the second operator rotational direction thereof;

said cam structure and said driving member being constructed and arranged such that operation of said motor to rotate said output member in said second operator rotational direction thereof causes said driving member to cam said cam surface so as to move said cam structure to stress said spring structure, said spring structure being constructed and arranged to thereafter apply a second spring return force to said cam structure that tends to cause said cam surface to cam said driving member so as to rotate said operator output member in the first operator rotational direction thereof.

79. A non-handed swing door operator according to claim 78, wherein said motor has a rotatable motor output member that rotates during operation of said motor and further comprising an input member coupled to said motor output member, said input member being rotatable about an input member axis extending at an angle with respect to said operator output member axis under rotation of said motor output member, said input member being coupled with said operator output member such that rotation of said input member about said input member axis rotates said operator output member about said operator output member axis.

80. A non-handed swing door operator according to claim 79, wherein said input member axis extends radially with respect to said output member axis.

81. A non-handed swing door operator according to claim 80, further comprising a reduction transmission connected between said motor output member and said input member such that (a) said transmission rotates said input member to effect rotation of said operator output member in said first operator rotational direction at a lower rotational speed than the rotational speed at which said motor rotates said motor output member in said first motor rotational direction and at a higher torque than a torque at which said motor rotates said motor output member in said first motor rotational direction and (b) said transmission rotates said input member to effect rotation of said operator output member in said second operator rotational direction at a lower rotational speed than a rotational speed at which said motor rotates said motor output member in said second motor rotational direction and at a higher torque than a torque at which said motor rotates said motor output member in said second motor rotational direction.

82. A non-handed swing door operator according to claim 81, wherein said reduction transmission comprises (a) an orbit gear arranged generally coaxially with respect to a transmission axis, (b) a planetary gear carrier positioned radially inwardly of said orbit gear for rotation about said transmission axis and having a planetary gear mounting portion offset generally radially from said transmission axis, and (c) a planetary gear rotatably mounted to said mounting portion of said gear carrier such that said planet gear rotates relative to said gear carrier about a planet gear axis which is offset generally radially from said transmission axis;

said planet gear being operatively connected to said motor output member such that (a) rotation of said motor output member in the first motor rotational direction thereof rotates said planet gear in a first planet gear rotating direction about said planet gear axis and (b) rotation of said motor output member in the second motor rotational direction thereof rotates said planet gear in a second planet gear rotating direction about said planet gear axis opposite said first planet gear rotating direction;

said planet gear being engaged with an interior surface of said orbit gear which faces generally radially inwardly with respect to said transmission axis such that (a) rotation of said planet gear in said first planet gear rotating direction causes said planet gear to roll along said interior surface of said orbit gear generally circumferentially with respect to said transmission axis to rotate said gear carrier in a first carrier rotating direction about said transmission axis and (b) rotation of said planet gear in said second planet gear rotating direction causes said planet gear to roll along said interior surface of said orbit gear generally circumferentially with respect to said transmission axis to rotate said gear carrier in a second carrier rotating direction about said transmission axis opposite said first carrier rotating direction;

said planet gear carrier being operatively connected to input member such that (a) rotation of said planet gear carrier in said first carrier rotating direction thereof as a result of said planet gear being rotated in said first planet rotating direction thereof by said motor output member rotates said input member to effect rotation of said operator output member in the first operator rotational direction and (b) rotation of said planet gear carrier in said second carrier rotating direction thereof as a result of said planet gear being rotated in said first planet rotating direction thereof by said motor output member rotates said input member to effect rotation of said operator output member in the second operator rotational direction thereof.

83. A non-handed swing door operator according to claim 82, wherein said reversible motor is a reversible electric motor.

84. A non-handed swing door operator according to claim 83, wherein said spring structure includes only one compression spring.

85. A non-handed swing door operator according to claim 84, wherein said driver member is fixed directly to said output member.

86. A swing door operator for controlling pivoting movements of a door panel that is to be pivoted about a generally vertical door panel axis from a closed position to an open position, said swing door operator comprising:

an operator output member rotatable about an output member axis, said operator output member being constructed and arranged to be operatively connected with the door panel such that rotation of said output member about said output member axis pivots the door panel about the door panel axis thereof;

a motor coupled to said operator output member, said motor being constructed and arranged to rotate said output member about said output member axis such that, when said output member is operatively connected to the door panel, said operator output member pivots the door panel about the door panel axis thereof;

a driving member connected to said output member such that applying force to said driving member rotates said output member about said output member axis;

a cam structure having a cam surface engaged with said driving member in a camming relationship;

a door return compression spring structure positioned in force applying relation with respect to said cam structure, said cam structure and said driving member being constructed and arranged such that, when said operator output member is operatively connected to the door panel, operation of said motor to rotate said output member in a first rotational direction thereof and pivot the door in a first door panel pivoting direction about the door panel axis thereof causes said driving member to cam said cam surface so as to move said cam structure to stress said compression spring structure, said compression spring structure being constructed and arranged to thereafter apply a spring force to said cam structure that tends to cause said cam surface to cam said driving member so as to rotate said output member in a second rotational direction opposite said first rotational direction thereof and pivot the door panel when operatively connected thereto in a second door pivoting direction opposite said first door pivoting direction about the door panel axis thereof.

87. A swing door operator according to claim 86, wherein said cam structure and said driving member are constructed and arranged such that said spring structure tends to normally maintain said driving member in a position corresponding to the closed position of the door panel.

88. A swing door operator according to claim 86, wherein said driving member comprises an offset member spaced radially from said output member axis and wherein said cam structure moves generally radially with respect to said output member axis in a cam travelling direction such that (a) said offset member moves generally circumferentially with respect to said output member axis in a first circumferential direction as said output member rotates about said output member axis in said first rotational direction so as to cam said cam structure in generally radially with respect to said output member axis and (b) said offset member moves generally circumferentially with respect to said output member axis in a second circumferential direction opposite said first circumferential direction as said output member rotates about said output member axis in a second rotational direction opposite said first rotational direction so as to cam said cam structure generally radially with respect to said output member axis.

89. A swing door operator according to claim 88, wherein when said operator output member is in a position corresponding to the closed position of said door panel, said offset member is disposed in alignment with said cam travelling direction,

said cam surface having a portion extending at an angle with respect to said cam travelling direction such the spring force applied to said offset member as said offset member cams along said portion of said cam surface varies in a non-linear manner.

90. A swing door operator according to claim 89, wherein said cam surface is generally U-shaped and generally symmetrical with respect to said cam travelling direction.

91. A swing door operator according to claim 89, wherein said driver member has a force receiving member disposed concentrically with respect to said output member axis and wherein said cam structure provides a force transmitting surface, said force transmitting surface being engageable with said force receiving member such that forces transverse to said cam travelling direction applied to said cam structure as a result of said offset member camming along said portion of said cam surface are transmitted to said force receiving member.

92. A swing door operator according to claim 90, wherein said driver member has a force receiving member disposed concentrically with respect to said output member axis and wherein said cam structure provides a pair of force transmitting surfaces, said force transmitting surfaces being engageable with said force receiving member such that forces transverse to said cam travelling direction applied to said cam structure as a result of said offset member camming along said portion of said cam surface are transmitted to said force receiving member.

93. An automatic swing door assembly for installation in a wall of a building having an opening formed therethrough, said assembly comprising:

a frame assembly constructed and arranged to be mounted at the opening of said wall;

a door panel pivotally mounted to said frame assembly for pivotal movement about a generally vertically extending door panel axis from a closed position obstructing travel through the opening of said wall in a power driven door opening direction to a normal open position permitting travel through the opening of said wall and from said closed position in a manually driven breakout door opening direction opposite the power driven door opening direction to a breakout open position permitting travel through the opening of said wall;

a swing door operator comprising;

an operator output member rotatable about an output member axis, said operator output member being operatively connected with the door panel such that rotation of said output member about said output member axis pivots the door panel about the door panel axis thereof;

a motor coupled to said operator output member, said motor being constructed and arranged to rotate said output member about said output member axis such that said operator output member pivots the door panel about the door panel axis thereof;

a driving member connected to said output member such that applying force to said driving member rotates said output member about said output member axis;

a cam structure having a cam surface engaged with said driving member in a camming relationship;

a door return compression spring structure positioned in force applying relation with respect to said cam structure, said cam structure and said driving member being constructed and arranged such that operation of said motor to rotate said output member in a first rotational direction thereof and pivot the door in a first door panel pivoting direction about the door panel axis thereof causes said driving member to cam said cam surface so as to move said cam structure to stress said compression spring structure, said compression spring structure being constructed and arranged to thereafter apply a spring force to said cam structure that tends to cause said cam surface to cam said driving member so as to rotate said output member in a second rotational direction opposite said first rotational direction thereof and pivot the door panel operatively connected thereto in a second door pivoting direction opposite said first door pivoting direction about the door panel axis thereof;

an input device operable to transmit a door opening signal in response to detecting a presence of an object adjacent said door assembly; and

a controller communicated to said input device, said controller being operable to receive said door opening signal from said input device and to responsively control operation of said motor so as to cause said door operator to pivot said door panel in said first door opening direction thereof.

94. An automatic door assembly according to claim 93, wherein said cam structure and said driving member are constructed and arranged such that said spring structure tends to normally maintain said driving member in a position corresponding to the closed position of the door panel.

95. An automatic door assembly according to claim 94, wherein said driving member comprises an offset member spaced radially from said output member axis and wherein said cam structure moves generally radially with respect to said output member axis in a cam travelling direction such that (a) said offset member moves generally circumferentially with respect to said output member axis in a first circumferential direction as said output member rotates about said output member axis in said first rotational direction so as to cam said cam structure in generally radially with respect to said output member axis and (b) said offset member moves generally circumferentially with respect to said output member axis in a second circumferential direction opposite said first circumferential direction as said output member rotates about said output member axis in a second rotational direction opposite said first rotational direction so as to cam said cam structure generally radially with respect to said output member axis.

96. An automatic door assembly according to claim 95, wherein when said door panel is in the closed position thereof, said offset member is disposed in alignment with said cam travelling direction,

said cam surface having a portion extending at an angle with respect to said cam travelling direction such the spring force applied to said offset member as said offset member cams along said portion of said cam surface varies in a non-linear manner.

97. An automatic door assembly according to claim 96, wherein said cam surface is generally U-shaped and generally symmetrical with respect to said cam travelling direction and wherein the portion of said U-shaped cam surface at which the legs thereof converge cooperates with said offset member such that said spring structure tends to normally maintain said driving member in the position corresponding to the closed position of the door panel.

98. An automatic door assembly according to claim 96, wherein said driver member has a force receiving member disposed concentrically with respect to said output member axis and wherein said cam structure provides a force transmitting surface, said force transmitting surface being engageable with said force receiving member such that forces transverse to said cam travelling direction applied to said cam structure as a result of said offset member camming along said portion of said cam surface are transmitted to said force receiving member.

99. An automatic door assembly according to claim 97, wherein said driver member has a force receiving member disposed concentrically with respect to said output member axis and wherein said cam structure provides a pair of force transmitting surfaces, said force transmitting surfaces being engageable with said force receiving member such that forces transverse to said cam travelling direction applied to said cam structure as a result of said offset member camming along said portion of said cam surface are transmitted to said force receiving member.

100. A swing door operator for controlling pivoting movements of a door panel that is to be pivoted about a generally vertical door panel axis between open and closed directions, said swing door operator comprising:

an operator output member rotatable about an output member axis, said operator output member being constructed and arranged to be operatively connected with the door panel such that rotation of said output member about said output member axis pivots the door panel about the door panel axis thereof, said operator output member having a set of gear teeth operatively associated therewith;

a rotatable input member having a set of gear teeth intermeshed with said set of gear teeth associated with said operator output member such that rotation of said input member rotates said output member about said output axis thereof;

a motor constructed and arranged to rotate said input member such that, when said output member is operatively connected to the door panel, said input member rotates said output member in a first rotational direction via said intermeshed sets of gear teeth so as to pivot the door panel in a first door pivoting direction about the door panel axis thereof;

a driving member connected to said output member such that applying force to said driving member rotates said output member about said output member axis, said driver member comprising an offset member spaced radially from said output member axis such that (a) said offset member moves generally circumferentially with respect to said output member axis in a first circumferential direction as said output member rotates about said output member axis in said first rotational direction and (b) said offset member moves generally circumferentially with respect to said output member axis in a second circumferential direction opposite said first circumferential direction as said output member rotates about said output member axis in a second rotational direction opposite said first rotational direction;

a door return compression spring structure positioned in force applying relation with respect to said offset member such that operation of said motor to rotate said output member in said first rotational direction thereof and pivot the door panel in the first door pivoting direction moves said offset member in said first circumferential direction thereof so as to stress said compression spring structure, said compression spring structure being constructed and arranged to thereafter apply a spring force to said offset member that tends to move said offset member in said second circumferential direction thereof so as to rotate said output member in the second rotational direction thereof and pivot the door panel operatively connected thereto in a second door pivoting direction opposite the first door pivoting direction without transmission of said spring force from said input member to said output member via said intermeshed sets of gear teeth.

101. A swing door operator according to claim 100, wherein said input member is rotatable about an input member axis that extends at an angle with respect to said output member axis.

102. A swing door operator according to claim 101, wherein said input member axis extends radially with respect to said output member axis.

103. A swing door operator for controlling pivoting movements of a door panel that is to be pivoted about a generally vertical door panel axis between open and closed directions, said swing door operator comprising:

an operator output member rotatable about an output member axis, said operator output member being constructed and arranged to be operatively connected with the door panel such that rotation of said output member about said output member axis pivots the door panel about the door panel axis thereof, said operator output member having a set of gear teeth operatively associated therewith;

a rotatable input member having a set of gear teeth intermeshed with said set of gear teeth associated with said operator output member such that rotation of said input member rotates said output member about said output axis thereof;

a motor constructed and arranged to rotate said input member such that, when said output member is operatively connected to the door panel, said input member rotates said output member in a first rotational direction via said intermeshed sets of gear teeth so as to pivot the door panel when operatively connected to said output member in a first door pivoting direction about the door panel axis thereof;

a driving member connected to said output member such that applying force to said driving member rotates said output member about said output member axis;

a cam structure having a cam surface engaged with said driving member in a camming relationship;

a door return compression spring structure positioned in force applying relation with respect to said cam structure, said cam structure and said driving member being constructed and arranged such that operation of said motor to rotate said output member in said first rotational direction thereof and pivot the door panel when operatively connected to said output member in the first door pivoting direction thereof causes said driving member to cam said cam surface so as to move said cam structure to stress said compression spring structure, said compression spring structure being constructed and arranged to thereafter apply a spring force to said cam structure that tends to cause said cam surface to cam said driving member so as to rotate said output member in a second rotational direction thereof opposite said first rotational direction and pivot the door panel when operatively connected thereto in a second door pivoting direction opposite the first do pivoting direction.

104. An automatic swing door assembly for installation in a wall of a building having an opening formed therethrough, said assembly comprising:

a frame assembly constructed and arranged to be mounted at the opening of said wall;

a door panel pivotally mounted to said frame assembly for pivotal movement about a generally vertically extending door panel axis from a closed position obstructing travel through the opening of said wall to an open position permitting travel through the opening of said wall;

a swing door operator comprising;

an operator output member rotatable about an output member axis, said operator output member operatively connected with the door panel such that rotation of said output member about said output member axis pivots the door panel about the door panel axis thereof, said operator output member having a set of gear teeth operatively associated therewith;

a rotatable input member having a set of gear teeth intermeshed with said set of gear teeth associated with said operator output member such that rotation of said input member rotates said output member about said output axis thereof;

a motor constructed and arranged to rotate said input member such that said input member rotates said output member in a first rotational direction via said intermeshed sets of gear teeth so as to pivot the door panel in a first door pivoting direction about the door panel axis thereof;

a driving member connected to said output member such that applying force to said driving member rotates said output member about said output member axis, said driver member comprising an offset member spaced radially from said output member axis such that (a) said offset member moves generally circumferentially with respect to said output member axis in a first circumferential direction as said output member rotates about said output member axis in said first rotational direction and (b) said offset member moves generally circumferentially with respect to said output member axis in a second circumferential direction opposite said first circumferential direction as said output member rotates about said output member axis in a second rotational direction opposite said first rotational direction;

a door return compression spring structure positioned in force applying relation with respect to said offset member such that operation of said motor to rotate said output member in said first rotational direction thereof and pivot the door panel in the first door pivoting direction moves said offset member in said first circumferential direction thereof so as to stress said compression spring structure, said compression spring structure being constructed and arranged to thereafter apply a spring force to said offset member that tends to move said offset member in said second circumferential direction thereof so as to rotate said output member in the second rotational direction thereof and pivot the door panel operatively connected thereto in a second door pivoting direction opposite the first door pivoting direction without transmission of said spring force from said input member to said output member via said intermeshed sets of gear teeth;

an input device operable to transmit a door opening signal in response to detecting a presence of an object adjacent said door assembly; and

a controller communicated to said input device, said controller being operable to receive said door opening signal from said input device and to responsively control operation of said motor to affect opening movement of the door panel.

105. An automatic swing door assembly for installation in a wall of a building having an opening formed therethrough, said assembly comprising:

a frame assembly constructed and arranged to be mounted at the opening of said wall;

a door panel pivotally mounted to said frame assembly for pivotal movement about a generally vertically extending door panel axis from a closed position obstructing travel through the opening of said wall to an open position permitting travel through the opening of said wall;

a swing door operator comprising;

an operator output member rotatable about an output member axis, said operator output member being operatively connected with the door panel such that rotation of said output member about said output member axis pivots the door panel about the door panel axis thereof, said operator output member having a set of gear teeth operatively associated therewith;

a rotatable input member having a set of gear teeth intermeshed with said set of gear teeth associated with said operator output member such that rotation of said input member rotates said output member about said output axis thereof;

a motor constructed and arranged to rotate said input member such that said input member rotates said output member in a first rotational direction via said intermeshed sets of gear teeth so as to pivot the door panel in a first door pivoting direction about the door panel axis thereof;

a driving member connected to said output member such that applying force to said driving member rotates said output member about said output member axis;

a cam structure having a cam surface engaged with said driving member in a camming relationship;

a door return compression spring structure positioned in force applying relation with respect to said cam structure, said cam structure and said driving member being constructed and arranged such that operation of said motor to rotate said output member in said first rotational direction thereof and pivot the door in the first door pivoting direction thereof causes said driving member to cam said cam surface so as to move said cam structure to stress said compression spring structure, said compression spring structure being constructed and arranged to thereafter apply a spring force to said cam structure that tends to cause said cam surface to cam said driving member so as to rotate said output member in a second rotational direction thereof opposite said first rotational direction and pivot the door panel operatively connected thereto in a second door pivoting direction opposite the first door pivoting direction;

an input device operable to transmit a door opening signal in response to detecting a presence of an object adjacent said door assembly; and

a controller communicated to said input device, said controller being operable to receive said door opening signal from said input device and to responsively control operation of said motor to affect opening movement of the door panel.