Driveline vehicle parking brake actuator

Details Driveline vehicle parking brake actuator Driveline vehicle parking brake actuator

2005-06-07

2005-06-07

Siconolfi, Robert A. (Department: 3683)

Brakes

Operators

Spring

C092S063000

Reexamination Certificate

active

06902043

ABSTRACT:
A driveline vehicle parking brake actuator including a reciprocable piston, a spring guide having a tubular distal portion telescopically received on the piston and a radial proximal portion which is telescopically supported within the housing by an annular wear guide, and nested cylindrical coil springs including an outer cylindrical coil spring biased between the housing and the radial portion of the spring guide and a nested inner coil spring having a greater spring rate biased between the spring guide and the piston functioning in series. The distal end of the piston is attached to a cable and the springs are compressed by hydraulic or pneumatic pressure acting against the piston.

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