Valve arrangement for operator actuated delivery of a pressure m

Details Valve arrangement for operator actuated delivery of a pressure m Valve arrangement for operator actuated delivery of a pressure m

1999-02-12

2000-12-12

Huson, Gregory L.

Fluid handling

Systems

Sequentially closing and opening alternately seating flow...

F16K 2100

Patent

active

061584681

ABSTRACT:
A valve arrangement includes a pressure medium inlet chamber, a pressure medium outlet chamber connected to a consumer, for example, a brake cylinder, and a pressure medium exhaust leading to a pressure medium sink. The pressure medium inlet chamber is connected to a pressure medium source. The pressure medium outlet chamber can be connected by operation of a controllable inlet valve to the pressure medium inlet chamber and by a controllable exhaust valve to a pressure medium sink. The actuating force requirement is small because the pressure force on the active surface of the graduating piston is absorbed by the regulating spring. As a result, the actuating force requirement of such arrangement is very low by comparison with the actuating force requirement of heretofore known arrangements. This feature permits facilitated selection of an actuating force requirement by placement of a spring which acts in opposition to an operating element of the arrangement. The invention finds particular significance in applications directed to vehicle braking systems.

REFERENCES:
patent: 3132567 (1964-05-01), Ingres et al.
patent: 4134418 (1979-01-01), Woodcock
patent: 4818036 (1989-04-01), Reinecke
patent: 4926907 (1990-05-01), Fauck et al.
patent: 5897174 (1999-04-01), Ehrlich
Wabco Westinghouse publication entitled "Motorwagen--Bremoventil Blatt," No. 461, 106, pp. 1-3 (Aug. 1973).
Wabco Westinghouse publication entitled "Motorwagen-Bremoventil," No. 461, 295, pp. 1-2 (Aug. 1973).

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