Claims
- 1. A hinge and roller assembly for use in a roll-up door, comprising:
- a pair of leaves each forming a portion of a bearing socket;
- a bushing mounted in the bearing socket;
- a shaft slidably mounted in the bushing, the shaft mounting a roller on one end, the roller adapted to roll in a track;
- a spring mounted between the shaft and the bushing to bias the shaft axially with respect to the bushing toward the roller; and
- a releasable retainer on the bushing for removably retaining the bushing in the bearing socket.
- 2. A hinge and roller assembly according to claim 1 wherein each of the leaves include a plate through which the hinge is adapted to be mounted to the door and an integral strap which is bent into a circular shape to define a portion of the socket and is attached at a distal end to the plate.
- 3. A hinge and roller assembly according to claim 1 wherein the spring is mounted between the socket and the roller.
- 4. A hinge and roller assembly according to claim 1 wherein the bushing includes a collar at a first end which abuts a first end of the socket and a groove at a second end adjacent the second end of the socket, and the retainer is a split ring mounted in the groove and abutting the second end of the socket.
- 5. A hinge and roller assembly according to claim 4 wherein the bushing includes a closed end adjacent to the second end of the bushing and the spring is mounted in the closed end of the bushing.
- 6. A hinge and roller assembly according to claim 4 wherein the spring is mounted between the first end of the socket and the roller.
- 7. A hinge and roller assembly according to claim 1 wherein the bushing includes a collar at a first end of the bushing and an integrally formed finger at an end portion of the bushing, the collar abutting a first end of the socket, the integrally formed finger having a retaining tab on an end portion thereof and abutting a second end of the socket, the integrally formed finger being deflectable inwardly for sliding assembly of the bushing into the socket.
- 8. A hinge and roller assembly according to claim 7 wherein the spring is mounted between the first end of the socket and the roller.
- 9. A hinge and roller assembly according to claim 7 wherein the retaining tab includes a ramped surface for aiding insertion of the bushing into the socket.
- 10. A hinge and roller assembly according to claim 7 wherein the integrally formed finger is defined by a U-shaped slot in the bushing.
- 11. A hinge and roller assembly according to claim 10 wherein the bushing includes a closed end adjacent to the second end of the bushing and the spring is mounted in the closed end of the bushing.
- 12. A hinge and roller assembly according to claim 7 wherein the integrally formed finger is defined by an axial slot in the bushing.
- 13. A hinge and roller assembly according to claim 12 wherein the bushing includes a substantially closed end adjacent to the second end of the bushing and the spring is mounted in the substantially closed end of the bushing.
CROSS-REFERENCE TO RELATED APPLICATION
This application claims the benefit of U.S. provisional patent application Ser. No. 60/071,533, filed Jan. 15, 1998.
US Referenced Citations (7)
Non-Patent Literature Citations (1)
Entry |
Access Works, Inc., 1995 Catalog entitled "Roll-Up Doors and Replacement Parts". |