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Retrofit power door assembly

  • US 6,553,717 B2
  • Filed: 09/05/2001
  • Issued: 04/29/2003
  • Est. Priority Date: 08/10/1999
  • Status: Expired due to Fees
First Claim
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1. A retrofit power-operated door operating system for installation on a manual swing door assembly, said door assembly comprising a frame mounted to a building wall and a swinging door panel manually movable in a swinging manner with respect to said door frame between opened and closed positions thereof by manual force, said retrofit door operating system comprising:

  • a door panel mounting structure constructed and arranged to be mounted to the door panel;

    wall mounting structure constructed and arranged to be mounted to the building wall;

    a linkage structure connected between said door panel mounting structure and said wall mounting structure;

    an axial operator comprising;

    an operator output member rotatable about an operator axis that extends generally vertically when said system is installed on the swing door assembly, said operator output member and said linkage structure being constructed and arranged such that, when said system is installed on the swing door assembly, rotation of said operator output member drives said linkage structure to move said wall and door panel mounting structures relative to one another to affect powered swinging movement of the door panel between the open and closed position thereof aforesaid;

    an electric motor connectable to an electric power supply, said motor having a motor output member rotatable about said operator axis and being constructed and arranged to rotate said motor output member about said operator axis;

    a planet gear reduction transmission connected between said motor output member and said operator output member, said reduction transmission being constructed and arranged such that said transmission rotates said operator output member at a lower rotational speed than a rotational speed at which said motor rotates said motor output member and applies a higher torque to said operator output member than a torque which said motor applies to said motor output member;

    said reduction transmission comprising (a) an orbit gear arranged generally coaxially with respect to said operator axis, (b) a planet gear carrier positioned radially inwardly of said orbit gear and arranged for rotation about said operator axis, said planet gear carrier having a mounting portion offset generally radially from said output axis, and (c) a planet gear rotatably mounted to the mounting portion of said planet gear carrier such that said planet gear rotates about a planet gear axis that extends through said mounting portion generally parallel to said operator axis;

    said planet gear being operatively connected to said motor output member and engaged with a radially inwardly facing interior surface of said orbit gear such that rotation of said motor output member rotates said planet gear relative to said planet gear carrier about said planet gear axis which in turn causes said planet gear to roll along the interior surface of said orbit gear in a generally circumferential direction with respect to said operator axis, thereby rotating said planet gear carrier about said output axis at a lower rotational speed and at a higher torque than the rotational speed and torque at which said motor rotates said motor output member;

    said planet gear carrier being operatively connected to said operator output member such that rotation of said planet gear carrier as a result of said planet gear being rotated by said motor output member as aforesaid rotates said operator output member as aforesaid to affect said relative movement between said frame and door panel mounting structures;

    an input device operable to generate a door movement signal; and

    a controller communicated to the motor of said axial operator, said controller being operable responsive to receiving said door movement signal to control operation of said motor so as to selectively cause said motor to rotate said motor output member and thereby rotate said operator output member as aforesaid to affect said powered swinging movement of the door panel between the opened and closed positions thereof.

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