Patent ID: 6089361
Filing Date: 2000-07-18
Classification: F16D

Abstract:
A brake shaft assembly for a vehicle having an axle with a wheel hub at an end of the axle and a brake actuating means located inboard from the wheel hub, the brake shaft assembly comprising:a shaft having a first end and a second end, the first end of the shaft having a brake actuating lever arm attached thereto and the second end of the shaft having a cam fixed thereon;a support bracket providing an aperture for passage of the shaft therethrough;a first bushing assembly supporting the shaft rotatably, substantially parallel to the axle, surrounding the shaft near the first end and retaining the shaft in the aperture of the support bracketa brake spider affixed to the axle, having a boss formed at one end thereof with an aperture for passage of the shaft therethrough, the boss and the aperture defining a cavity; anda second bushing assembly surrounding the shaft near the second end and retaining the shaft in the aperture of the brake spider boss, the second bushing assembly comprising:the boss, having a hole communicating an outer surface of the boss with the aperture therein;a cylindrical bushing, with an outside surface sized and adapted to be received in the aperture and an inside surface sized and adapted to receive the shaft and a flanged portion at one end;a grease zerk fitted in the hole in the boss;a seal ring seated in a groove on the outside surface of the bushing, providing a seal between the outside surface and an inside surface of the aperture;a pair of bushing end seals seatable on the shaft for retaining grease in the cavity; andcomplementary locking means on the boss and the bushing for retaining the bushing in the aperture in a non-rotating manner.