Spring applied disc brake

Details Spring applied disc brake Spring applied disc brake

F - Mech Eng,Light,Heat,Weapons

16

D

188/148

F16D 55/18 (2006.01) F16D 65/14 (2006.01)

Patent

CA 1043712

SPRING-APPLIED DISC BRAKE ABSTRACT OF THE DISCLOSURE A disc brake is disclosed which has a spring actuator in addition to the usual hydraulic actuation. When the brake is functioning normally, fluid pressure opposes the spring actuator to permit normal hydraulic opera- tion of the brake. However, when fluid pressure is not available to the brake, because of a malfunction or because the vehicle operator has closed a valve to isolate the brakes from the vehicle's hydraulic system, the spring actuator maintains the frictional elements engaged with the rotor. The spring actuator, therefore, functions as both a parking brake and a fail-safe brake that immobi- lizes the vehicle when a malfunction in the vehicle is hydraulic system occurs. Mechanical release means are provided to release the spring actuator to permit the vehicle to be moved if the spring actuator has applied the brake while the vehicle is standing in an inconvenient location.

105716

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