Drum brake having parking mechaism

Details Drum brake having parking mechaism Drum brake having parking mechaism

1979-11-16

1980-12-02

Kazenske, Edward R.

Brakes

Wheel

Transversely movable

188 795P, 188106F, 188106A, 188332, F16D 5122, F16D 5124

Patent

active

042366143

ABSTRACT:
A drum brake assembly includes a pair of brake shoes which are movable to a braking position by a hydraulic actuator. In order to maintain the pair of brake shoes adjacent the drum an adjuster is disposed between the pair of brake shoes opposite the hydraulic actuator. The adjuster carries a parking mechanism to manually move the pair of brake shoes to the braking position independently of the hydraulic actuator. The parking mechanism comprises a pair of levers which are pivotally connected to projections on the adjuster and the levers oppose one of the pair of brake shoes such that pivoting of the pair of levers moves the adjuster and the other brake shoe away from the one brake shoe. A spacer and a washer are disposed between the one brake shoe and abutment surfaces on each pair of levers and the adjuster movably supports the spacer and the washer.

REFERENCES:
patent: 2842229 (1958-07-01), Ross
patent: 3027981 (1962-04-01), Erickson
patent: 4180149 (1979-12-01), Johannesen et al.

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