Brake force amplifier for a multiple circuit brake system

Details Brake force amplifier for a multiple circuit brake system Brake force amplifier for a multiple circuit brake system

1981-06-22

1984-01-31

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

303119, B60T 1314

Patent

active

044286236

ABSTRACT:
A brake force amplifier for a multiple-circuit brake system. The brake force amplifier has a multiple-circuit brake valve, parallel to which a switching valve is provided. This switching valve is actuated by a main cylinder pressure in exactly the same manner as the brake valve. When there is no pressure available in a presurizing apparatus supplying the brake force amplifier with pressure medium, the switching valve keeps the brake valve ineffective. When a brake force amplifier of this kind is used in an anti-skid apparatus, an apparatus is created which has lower cost, lower weight and a smaller structural volume than known designs and the function of which is improved in terms of noise and retroactive effect on the pedal. The brake force amplifier is intended for a multiple-circuit brake system for motor vehicles.

REFERENCES:
patent: 3503655 (1970-03-01), Heimler
patent: 3514161 (1970-05-01), Frayer
patent: 3702713 (1972-11-01), Oberthur
patent: 3827759 (1974-08-01), Belart
patent: 4264109 (1981-04-01), Knox et al.

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