Torque limitation device for a drum brake

Details Torque limitation device for a drum brake Torque limitation device for a drum brake

1975-02-24

1976-04-20

Blix, Trygve M.

Brakes

Wheel

Transversely movable

188331, F16D 5120

Patent

active

039512436

ABSTRACT:
A drum brake, primarily for a trailer, which gives normal braking torque in forward direction and low torque in reverse. This is achieved by having a pivoted lever acting between the one ends of two shoes remote from the ends between which the brake actuator is located. The shoes act on the lever at different effective radii and the forces applied by the shoes to the lever hold it in a first position during forward rotation, thus allowing normal braking torque, and a second position during reverse rotation which allows the ends of the shoes acted on by the actuator to move apart thus allowing a limitation of the reverse braking torque by limiting the stroke of the actuator.

REFERENCES:
patent: 2246242 (1941-06-01), Chase
patent: 3420340 (1969-01-01), Hopf
patent: 3805926 (1974-04-01), Clay et al.

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