Disc brakes

Details Disc brakes Disc brakes

1980-07-30

1982-10-26

Reger, Duane A.

Brakes

Position adjusters

Slack

188 719, F16D 6556

Patent

active

043557082

ABSTRACT:
A disc brake comprises an operating piston mounted in a cylinder rigid with a stirrup. The piston is movable in the cylinder to cause axial movement of friction linings under the action of hydraulic pressure or the force of a mechanical brake actuator. An operating clearance is provided to allow a limited retraction of the friction linings when the hydraulic pressure or the mechanical actuating force is released. The mechanical actuator comprises a screw rotatable in the cylinder. A nut engaged by the screw is connected to the piston by a unidirectional coupling device comprising teeth on the nut co-operating with teeth on a ring fixed for rotation with the piston. The nut is mounted for translatory movement in relation to the piston solely through a limited distance corresponding to the operating clearance, and the ring is mounted for axial displacement relative to the piston. This construction provides for automatic adjustment for wear of the linings and obviates transmission of the mechanical braking force through the teeth which would be liable to break.

REFERENCES:
patent: 3820635 (1974-06-01), Hurt
patent: 3835961 (1974-09-01), Troester et al.
patent: 4006802 (1977-02-01), Evans

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