发明名称 |
Multiple-circuit valve apparatus |
摘要 |
A bidirectional flow communication passageway is provided by the present invention in a multiple-circuit fluid pressure responsive system on a motor vehicle to allow a gradual reduction of pressure in a parking brake circuit which is a part of such system. The passageway is restricted to limit such bidirectional flow to a predetermined level. The pressure reduction permitted is sufficient to activate a parking brake valve in such parking brake circuit when a defect occurs in an operating service brake circuit which is also a part of such system.
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申请公布号 |
US4817497(A) |
申请公布日期 |
1989.04.04 |
申请号 |
US19850773898 |
申请日期 |
1985.09.09 |
申请人 |
WABCO WESTINGHOUSE FAHRZEUGBREMSEN GMBH |
发明人 |
SEEGERS, GUNTER |
分类号 |
B60T11/34;B60T17/18;(IPC1-7):F15B13/04 |
主分类号 |
B60T11/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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