Lock assembly for a vehicle disc brake

Details Lock assembly for a vehicle disc brake Lock assembly for a vehicle disc brake

1975-04-25

1976-10-05

Halvosa, George E. A.

Brakes

Elements

Locks

92 17, 188 719, 188196D, 303 89, F16D 6300

Patent

active

039839753

ABSTRACT:
A disc or drum brake fluid pressure actuator incorporates a lock actuator strut acting on an inner part of a telescopic piston assembly, of which the inner and outer parts are normally rendered effectively unitary by pre-stressed spring which can, however, deflect under excess pressure to permit extension of the lock actuator strut when it is desired to operate the strut for parking purposes. An hydraulic control system for operating the actuator is also described and illustrated.

REFERENCES:
patent: 3472124 (1969-10-01), Roselius et al.
patent: 3653473 (1972-04-01), Clay et al.
patent: 3767016 (1973-10-01), Hust
patent: 3770084 (1973-11-01), Hill
patent: 3809189 (1974-05-01), Farr
patent: 3885653 (1975-05-01), Farr

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