Title: Pressure regulation valve
Application Number: 88101480 Application Date: 1988.03.21
Publication Number: 1022200 Publication Date: 1988.11.16
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: B60T17/18;F16K47/02;G05D16/10
Applicant(s) Name: WABCO Westinghouse Fahrzeugbremsen GmbH Address:
Inventor(s) Name: Deike Karl-Heinz;Kiel Bernd;Konig Heinz-Werner
Attorney & Agent: XU BIN
Abstract:
    The present invention provides a pressure regulating valve which substantially avoids shutoff noises. The pressure regulating valve is designed such that the opening process of the shutoff valve proceeds in two steps. The two-step switching process is made possible by the provision of a seal ring which slides on an activating piston which activates the shutoff valve. This seal ring acts upon a housing mounted detent and an activating piston mounted additional detent, thus creating an automatically acting additional surface area for the activating piston.
Time: 4
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