Anti-skid hydraulic braking systems for vehicles

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

1985-01-07

1986-08-19

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Pipeless valves

303115, 303116, B60T 802

Patent

active

046065857

ABSTRACT:
An anti-skid hydraulic braking system incorporates a modulator assembly for modulating the supply of fluid from a master cylinder to a brake in accordance with skid signals. The modulator assembly comprises a de-boost piston located in a bore in a housing, an expander chamber connected to the brake, a first valve between the master cylinder and the chamber, and a second valve for controlling the application of the de-boost piston of a fluid sustained-support force. The modulator assembly incorporates a safety piston which prevents the first valve from closing unless a device, suitably an hydraulic accumulator or pump, and which provides the fluid sustained-support force, is operative.

REFERENCES:
patent: 3747990 (1973-07-01), Tanguy
patent: 3813130 (1974-05-01), Inada
patent: 4457563 (1984-07-01), Farr

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