Brake control method and apparatus for a vehicle

Details Brake control method and apparatus for a vehicle Brake control method and apparatus for a vehicle

1987-07-08

1988-12-20

Halvosa, George E. A.

Brakes

Operators

Fluid pressure

116 28R, 180286, 188151A, 188349, 188 111, 303 61, 340 52D, B60T 1128

Patent

active

047920238

ABSTRACT:
A brake control apparatus for a vehicle includes a brake apparatus of the drum brake type; an electromagnetic valve arranged in a conduit between a wheel cylinder and a master cylinder; and a detector for detecting one directional movement of the brake friction members of the brake apparatus due to a backward rotational force of a wheel and another directional movement of the brake friction members due to a forward rotational force of the wheel when the brake friction members are pressed to the frictional surface of the rotator. The brake friction members being able to move within a predetermine range in accordance with the torque of the wheel. The detector includes a slide anchor slidably fitted to a through hold in a stationary anchor, the brake friction members being engaged with the slide anchor, and an electrical switch for detecting the movement of the slide anchor. The valve being closed and opened by the detecting output of the electrical switch. The brake apparatus further includes a spring extended between a stationary part of the brake and a brake friction member such that the one friction member is always pushed to the slide anchor by the spring, so that the electrical switch is normally held in the OFF state.

REFERENCES:
patent: 3346078 (1967-10-01), Dobb
patent: 3384423 (1968-05-01), Cumming
patent: 3651457 (1972-03-01), Sprouse
patent: 3699679 (1972-10-01), Bardos et al.
patent: 3949845 (1976-04-01), Newstead et al.
patent: 4247154 (1981-01-01), Shoji et al.
patent: 4292883 (1981-10-01), Riquast et al.
patent: 4533028 (1985-08-01), Taig

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