Self-adjusting drum brake

Details Self-adjusting drum brake Self-adjusting drum brake

1988-11-29

1990-02-27

Halvosa, George E. A.

Brakes

Wheel

Transversely movable

188 7962, 188196BA, 192111A, F16D 6556

Patent

active

049038001

ABSTRACT:
In a drum brake provided with an automatic adjustment device (40c, 40d) effecting the elongation of a spacer interposed between the shoes (12, 14) in the proximity of the brake motor (22), a device (46, 34) makes it possible to neutralize the adjustment device when heavy braking is applied. This device (46, 34) comprises a lever (46, 34) pivoted on one shoe (12, 14) and provided with a projection against which the brake motor bears. A spring (50, 42) normally holds the lever in a position of rest on the shoe supporting it, and the spacer bears against the lever. On heavy braking, the lever pivots, thus neutralizing the adjustment device. The lever can in particular be the hand brake lever (34).

REFERENCES:
patent: 4222467 (1980-09-01), Kluger et al.
patent: 4502573 (1985-03-01), Carre188 79.5

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