Dual brake circuit valve assembly

Details Dual brake circuit valve assembly Dual brake circuit valve assembly

1975-05-29

1977-03-08

Blix, Trygve M.

Fluid-pressure and analogous brake systems

Automatic

Application valve

1376275, 303 52, B60T 1512

Patent

active

040109836

ABSTRACT:
A dual brake valve for use in a twin-circuit fluid pressure-operated vehicle braking system comprises a housing, two sets of ports therein each including an inlet port and a delivery port, and two co-axial valve assemblies associated respectively with the two sets of ports, the valve assemblies each comprising a poppet-type valve element the head of which is subjected to delivery pressure, which pressure also acts on an oppositely-directed face of the valve element such that fluid pressure across the valve element is balanced. Preferably an axial exhaust passage is provided in part by a tubular member located co-axially between the valve assemblies by a diaphragm assembly which is also subjected to delivery pressure on both sides thereof.

REFERENCES:
patent: 1874297 (1932-08-01), Ives
patent: 3507545 (1970-04-01), Page et al.
patent: 3580646 (1971-05-01), Ternent
patent: 3606494 (1971-09-01), Frank et al.
patent: 3712685 (1973-01-01), Hoffmann

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