Anti-skid hydraulic braking systems for vehicles

Details Anti-skid hydraulic braking systems for vehicles Anti-skid hydraulic braking systems for vehicles

1985-07-01

1987-04-07

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

188181A, 303116, 303119, B60T 802

Patent

active

046555137

ABSTRACT:
In an anti-skid braking system of the de-boost and pump to re-apply type, a solenoid-operated cut-off valve is disposed between an expander piston and a brake, and the cut-off valve is operable independently of and separately from the expander piston. The cut-off valve co-operates with a one-way valve disposed between a master cylinder and the brake to hold the one-way valve in an open position when the cut-off valve is in a closed position with the solenoid de-energized. This ensures that the one-way valve can close only as a result of movement of the cut-off valve into an open position which can occur only when the solenoid is energized in response to a skid signal.

REFERENCES:
patent: 4340258 (1982-07-01), Farr
patent: 4547022 (1985-10-01), Brearley et al.

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