Hydraulic anti-lock braking systems for vehicles

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

1989-05-12

1990-07-10

Reger, Duane A.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

303116, 303119, B60T 840

Patent

active

049402943

ABSTRACT:
An anti-lock braking system of the dump to expansion chamber and pump to re-apply type incorporates first and second upstream and downstream valves which are interconneted and are located in a line in series. A first one-way valve is located between the pump and the brake on the downstream side of the second valve, and a second one-way valve is located in parallel with the first one-way valve in a line between the pump and the second valve. Each valve is operable independently of, or simultaneously with, the other valve in accordance with the sensed behavior of the braked wheel to achieve four modes of normal brake application, dump, automatic brake re-application, and "hold".

REFERENCES:
patent: 4389076 (1983-06-01), Ostwald
patent: 4395073 (1983-07-01), Arikawa et al.

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