Hydraulic anti-skid braking systems for vehicles

Details Hydraulic anti-skid braking systems for vehicles Hydraulic anti-skid braking systems for vehicles

1980-11-20

1982-07-20

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

303116, B60T 802

Patent

active

043402585

ABSTRACT:
An hydraulic anti-skid braking system for vehicles is disclosed in which a supply of operating fluid from a master cylinder to a vehicle brake is modulated by a modulator assembly in accordance with signals from a skid sensing device. The modulator assembly incorporates an expansion chamber and an hydraulic pump has a working chamber which is connected to the expansion chamber. A dump valve disposed between the expansion chamber and a reservoir for fluid is operable by the sensing device to regulate the pressure in the expansion chamber in accordance with the deceleration of the wheel braked by the brake. The pump is operable only to repressurize the expansion chamber following correction of a skid.

REFERENCES:
patent: 3724914 (1973-04-01), Skoyles
patent: 3922021 (1975-11-01), Every
patent: 3980346 (1976-09-01), Leiber
patent: 4046427 (1977-09-01), Baynes et al.

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