Removable torque rod assembly for self-closing door

• US 4,905,347 A
• Filed: 08/26/1988
• Issued: 03/06/1990
• Est. Priority Date: 08/26/1988
• Status: Expired due to Term

• Current Assignee: New Anthony Inc (Dover Corporation)
• Original Assignee: Anthony Manufacturing Corporation.
• Inventors: Wroth, Franz L.
• Primary Examiner(s): Codici, Nicholas P.
• Assistant Examiner(s): Cuda, Carmine
• Application Number:
  US07/237,133
• Time in Patent Office: 557 Days
• Field of Search: 16/308, 16/75, 16/280
• US Class Current: 16/308
• CPC Class Codes: E05F 1/123 with a torsion bar
• CPC Class Codes: E05Y 2900/132 Doors

Abstract

A removable torque rod assembly for a self-closing door which may be easily installed on a door and an anchoring device mounted to an underlying door frame. The torque rod assembly may be used for either a left- or right-handed door. The assembly uses a torque rod located inside a metal sleeve having the sleeve crimped or attached to or otherwise made integral with the rod at its top end so that the rod and sleeve act together at the top end. The lower end of the torque rod passes through a bushing attached to the sleeve and through a bushing cap surrounding the bushing. A resilient O-ring fits into an annular groove in the bushing. The torque rod assembly is installed on the door by forcing the O-ring past an aperture in the door so that the O-ring holds the assembly on the door and a head of the bushing mates with the aperture in the door. The lower end of the torque rod assembly is then mounted in an anchoring device which keeps the lower end of the rod from rotating. The upper end of the torque rod is not attached to the door or frame and is a free end. The torque rod assembly may be removed from the door by lifting the door in order to dismount the lower end of the assembly from the anchoring device and then pushing the lower end of the assembly downward until the O-ring slips free of the aperture in the door.

Claims

1. A removable torque rod assembly for a self-closing door, said door having an aperture therein and a corresponding door frame with an anchoring device mounted thereon, said assembly comprising:

an elongated sleeve;

a member fixedly attached to the bottom of said sleeve, said member having a bore passing therethrough, said member capable of removably engaging said aperture in said door so that relative movement between said member and said door is prevented;

a torque rod disposed inside said elongated sleeve and non-rotatably attached to said sleeve near the top of said sleeve, said rod capable of twisting inside said sleeve relative to said sleeve below where said rod is attached to said sleeve, said rod passing through said bore in said member, said rod having an upper end that is a free end and a lower end that is mounted on said anchoring device, said anchoring device preventing said lower end from rotating, said sleeve capable of passing through said aperture for installation of said assembly on said door and for removal of the assembly from the door, said torque rod biasing said door toward a closed position when said assembly is installed on said door and after said door is opened; and

resilient means removably engaged to said member for removably installing said torque rod assembly on said door.

2. The removable torque rod assembly of claim 1 wherein said resilient means is a ring.

3. The removable torque rod assembly of claim 2 wherein said resilient ring means includes a resilient ring removably engaging an annular groove in said member, said ring capable of being forced upward past said aperture in said door in order to install said assembly on said door, and capable of being forced downward out of said aperture in said door in order to remove said assembly from said door.

4. The removable torque rod assembly of claim 3 further comprising a cap fitting around and rotatably engaging a collar on said member, said cap removably engaging a socket in said anchoring device, said torque rod passing through an aperture in said cap so that said cap rotates about said rod.

5. The removable torque rod assembly of claim 4 further comprising a nut attached to said lower end of said torque rod, said nut removably engaging said anchoring device in order to prevent rotation of said lower end of said torque rod.

6. The removable torque rod assembly of claim 2 wherein said resilient ring is made out of rubber, said elongated sleeve is metal tubing and said torque rod is made out of spring steel.

7. The removable torque rod assembly of claim 6 wherein said torque rod has a square cross-section and said elongated sleeve is crimped to said rod near said top of said sleeve.

8. The removable torque rod assembly of claim 1 wherein said member has a head capable of removably engaging said aperture in said door.

9. The removable torque rod assembly of claim 8 wherein said head and said aperture in said door have mating hexagonal surfaces.

10. A removable torque rod assembly for a self-closing door, said door having an aperture therein and a corresponding door frame with an anchoring device mounted thereon, said assembly comprising:

an elongated sleeve;

a bushing attached to the bottom of said sleeve, said bushing having an aperture passing therethrough, an annular groove therein and a bushing head;

a resilient ring engaging said annular groove in said bushing; and

a torque rod disposed inside said elongated sleeve and integrally attached to said sleeve near the top of said sleeve, said rod capable of twisting inside said sleeve relative to said sleeve below where said rod is attached to said sleeve, said rod passing through said aperture in said bushing, said rod having an upper end that is a free end and a lower end that is mounted on said anchoring device, said anchoring device preventing said lower end from rotating, said torque rod assembly being installed on said door so that (a) said bushing head removably engages and mates with said aperture of said door preventing relative rotation between said head and said door, (b) said resilient ring is located above said aperture in said door preventing said bushing head from disengaging from said aperture in said door, and (c) said resilient ring is capable of being forced upward past said aperture in said door in order to install said assembly on said door and capable of being forced downward out of said aperture in said door in order to remove said assembly from said door, said torque rod urging said door toward a closed position when said assembly is installed on said door and after said door is opened.

11. The removable torque rod assembly of claim 10 further comprising a bushing cap fitting around and rotatably engaging a collar on said bushing, said bushing cap having an aperture therein, said torque rod passing through said aperture in said bushing cap so that said bushing cap rotates about said rod.

12. The removable torque rod assembly of claim 11 further comprising a nut attached to said lower end of said torque rod, said nut removably engaging said anchoring device in order to prevent rotation of said lower end of said torque rod.

13. The removable torque rod assembly of claim 12 wherein said bushing head and said aperture in said door have mating hexagonal surfaces.

14. The removable torque rod assembly of claim 13 wherein said resilient ring is made out of rubber, said elongated sleeve is metal tubing and said torque rod is made out of spring steel.

15. A removable torque rod assembly for a self-closing door, said door having an aperture therein and a corresponding door frame with an anchoring device mounted thereon, said assembly comprising:

an elongated sleeve;

a bushing attached to the bottom of said sleeve, said bushing having an aperture passing therethrough, a bushing head, an annular groove in said bushing above said bushing head, and a collar;

a resilient ring engaging said annular groove in said bushing;

a bushing cap fitting around and rotatably engaging said collar, said bushing cap having an aperture therein;

a torque rod disposed inside said elongated sleeve and integrally attached to said sleeve near the top of said sleeve, said rod capable of twisting inside said sleeve relative to said sleeve below where said rod is attached to said sleeve, said rod passing through and rotatably engaging said aperture in said bushing, and said aperture in said bushing cap, said torque rod having an upper end that is a free end and a lower end that is mounted on said anchoring device; and

a nut attached to said lower end of said torque rod, said nut removably engaging said anchoring device in order to prevent rotation of said lower end of said torque rod, said bushing cap removably and rotatably engaging a socket in said anchoring device, said bushing head removably engaging and mating with said aperture in said door in order to prevent rotation between said door and said bushing hed, said torque rod assembly removably held to said door by said resilient ring after said ring has been pushed upward through said aperture in said door, said torque rod assembly capable of being removed from said door by pulling said ring downward out of said aperture in said door, said torque rod biasing said door toward a closed portion when said assembly is mounted on said door and said door is opened.

16. The removable torque rod assembly of claim 15 wherein said bushing head and said aperture in said door have mating hexagonal surfaces.

17. The removable torque rod assembly of claim 16 wherein said resilient ring is a rubber O-ring, said elongated sleeve is metal tubing, and said torque rod is made out of spring steel.

18. The removable torque rod assembly of claim 17 wherein said torque rod has a square cross-section and said elongated sleeve is crimped to said rod near said top of said sleeve, said door rests on top of said collar when said torque rod assembly is mounted on said door.

19. The removable torque rod assembly of claim 15 wherein said door has two apertures therein, one of said apertures at the upper left hand corner of said door and the other of said apertures at the lower left hand corner of said door, said torque rod assembly capable of being used with said door, said door apertures and said anchoring device to selectively provide a left-handed and a right-handed door by selectively repositioning said door so that one of said door apertures is selectively located at said lower left hand corner of said door for said right-handed door and the other of said door apertures is selectively located at said lower right-handed corner of said door for said left-handed door.