Duo-servo drum brake

Details Duo-servo drum brake Duo-servo drum brake

1998-06-12

2000-10-17

Oberleitner, Robert J.

Brakes

Wheel

Transversely movable

188342, F16D 5100

Patent

active

06131711&

ABSTRACT:
Counter braking force acting on a secondary shoe is input to one end portion of a control lever supported with an anchor pin vertically provided on a backing plate in such a manner that the control lever is capable of swinging. An inner end portion in the radial direction of the control lever engages with a strut for pressing a primary shoe against a brake drum. Pressing force A with which the strut is pressing the primary shoe against the brake drum is drastically reduced when braking force, that is, the counter braking force increases and slightly reduced when the braking force, that is, the counter braking force decreases, whereby an increase or a decrease in the braking force is made automatically controllable.

REFERENCES:
patent: 1846024 (1932-02-01), Chase et al.
patent: 1981939 (1934-11-01), Andres
patent: 2167706 (1939-08-01), Berno
patent: 4546862 (1985-10-01), Shellhause

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