Brakes – Wheel – Axially movable brake element or housing therefor
Patent
1986-12-01
1988-09-20
Kashnikow, Andres
Brakes
Wheel
Axially movable brake element or housing therefor
188170, 188203, F16D 5502
Patent
active
047718692
ABSTRACT:
The present specification discloses a brake actuator incorporating a mechanically operated adjuster, the adjuster compensating for friction pad wear. The brake actuator comprises two adjuster members interconnected by a self-sustaining thread and located between a friction pad and an actuation member, the actuation member being biassed by a main spring to a brakes-on position with at least one hollow piston being displaceable under hydraulic pressure to compress the main spring and move the actuation member to a brakes-off positon, a second piston being carried within the hollow piston and being carried within the hollow piston and being axially displaceable therein under the hydraulic pressure and against a further spring, to cause interengaging clutch elements to rotate one adjuster member relative to the other adjuster member, a stop being arranged to limit the available movement of the clutch elements. The present invention thus provides a mechanically operated adjuster which avoids the inherent disadvantages of hydraulic operation.
REFERENCES:
patent: 3043406 (1962-07-01), Larsson
patent: 3401775 (1968-09-01), Sobol et al.
patent: 3592299 (1971-07-01), Erdmann
patent: 3593827 (1971-07-01), Sander
patent: 3815471 (1974-06-01), Kobelt
patent: 3899053 (1975-08-01), Nadas
patent: 4005767 (1977-02-01), Farello
patent: 4472995 (1984-09-01), Persson
patent: 4544047 (1985-10-01), Clemmons et al.
Kashnikow Andres
Le Mark T.
Lucas Industries Public Limited Company
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