Brakes – Wheel – Transversely movable
Patent
1976-05-25
1978-01-10
Reger, Duane A.
Brakes
Wheel
Transversely movable
188196V, F16D 6560
Patent
active
040674193
ABSTRACT:
A self-adjusting brake having a brake drum, primary and secondary brake shoes, a brake cylinder and a stationary brake shoe support for floatingly mounting the brake shoes. The latter are arranged interiorly of the brake drum and coact with it, the ends of the brake shoes being curved and pressed against the brake cylinder and the brake shoe support by means of return springs which also serve to lift the brake shoes off the brake drum when the brake is in non-actuated condition. Each brake shoe carries a brake lining and has a web which has associated with it an inclined surface that coacts with a respective pin, the inclination of the surfaces being such that the amount of play between the brake lining and the brake drum, when the brake is in non-actuated condition, remains substantially constant during displacement of the brake shoe as a result of wear of the brake lining. The return springs are so configured and arranged that the line of action of the resultant spring force acting on the primary brake shoe passes through the instantaneous axis of the primary brake shoe and the resultant spring force acting on the secondary brake shoe passes through the instantaneous axis of the secondary brake shoe. The inclined surfaces are arranged in that half of each respective brake shoe which abuts the brake cylinder, with each inclined surface being tangential to the instantaneous axis of the respective brake shoe.
REFERENCES:
patent: 2018567 (1935-10-01), Page
patent: 2046420 (1936-07-01), La Brie
patent: 2065292 (1936-12-01), Schnell
patent: 2419784 (1947-04-01), Low
Reger Duane A.
Volkswagenwerk Aktiengesellschaft
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