Duo-servo type drum brake device

Details Duo-servo type drum brake device Duo-servo type drum brake device

1998-03-06

2000-08-01

Butler, Douglas C.

Brakes

Wheel

Transversely movable

188106F, 188196BA, 188216, 188 7954, 188 7956, 188340, F16D 5148, F16D 6509

Patent

active

060952962

ABSTRACT:
In order to indirectly open brake shoes (3, 4) through a link (19) pivoted on one of the brake shoes (3) at a location of a brake shoe holding mechanism (5), and to operate the brake shoes (3, 4) away from a shoe gap adjuster (11) while one of the brake shoes (3) is kept abutting against an anchor member (10), when rotating a lever (20) with a force (W) and operating a wheel cylinder (16) to operate brake shoes (3, 4), a moment of rotation caused by the return spring (13) is set to be larger than a moment of rotation caused by the return spring (15).

REFERENCES:
patent: 2109091 (1938-02-01), Press
patent: 2280784 (1942-04-01), Berno
patent: 3255849 (1966-06-01), Swift
patent: 3425521 (1969-02-01), Maurice
patent: 3870131 (1975-03-01), Firth et al.
patent: 4589527 (1986-05-01), Danne et al.
patent: 4768631 (1988-09-01), Heibel
patent: 5819887 (1998-10-01), Asai et al.
patent: 5924529 (1999-07-01), Ikeda et al.

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