Vacuum brake force booster for a slip-controlled brake system

Details Vacuum brake force booster for a slip-controlled brake system Vacuum brake force booster for a slip-controlled brake system

1990-06-22

1992-03-17

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

60545, 913691, 91376R, 91459, 303114PN, 303119SV, B60T 832, B60T 844, B60T 1352, B60T 1368

Patent

active

050962671

ABSTRACT:
A brake valve for a vacuum brake force booster, wherein the valve body (33) is movably located on the pedal piston (32). The valve body, through two springs (35, 39) is held in a central position in which the brake pedal and pedal piston may move the valve body between booster deactivated and deactivated positions. Two electromagnets (37, 40) are provided which draw the valve body (33) both in the actuating direction and against the actuating direction. In this manner, the valve (17) can be actuated independently of the pedal force, to either release or apply braking pressure as for automatic antislip or traction control.

REFERENCES:
patent: 3653725 (1972-04-01), Hayes et al.
patent: 3795426 (1974-03-01), Sisson
patent: 4620750 (1986-11-01), Leiber
patent: 4659153 (1987-04-01), Kleih
patent: 4702531 (1987-10-01), Kircher et al.
patent: 4819996 (1989-04-01), Belart et al.
patent: 4900101 (1990-02-01), Becker et al.
patent: 4966420 (1990-10-01), Schiel et al.

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