发明授权
US5190362A Pressure limiting valve with uncoupled valve closing body and tappet
失效
压力限制阀与未锁紧的阀关闭身体和TAPPET
- 专利标题: Pressure limiting valve with uncoupled valve closing body and tappet
- 专利标题(中): 压力限制阀与未锁紧的阀关闭身体和TAPPET
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申请号: US726675申请日: 1991-07-08
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公开(公告)号: US5190362A公开(公告)日: 1993-03-02
- 发明人: Ernst-Dieter Schaefer , Klaus Mueller
- 申请人: Ernst-Dieter Schaefer , Klaus Mueller
- 申请人地址: DEX Stuttgart
- 专利权人: Robert Bosch GmbH
- 当前专利权人: Robert Bosch GmbH
- 当前专利权人地址: DEX Stuttgart
- 优先权: DEX4030424 19900926
- 主分类号: B60T8/175
- IPC分类号: B60T8/175 ; B60T8/34 ; B60T8/48 ; B60T11/34 ; F16K31/12
摘要:
A pressure limiting valve has a valve closing member (ball), which is subjected to a hydraulic opening force and is indirectly subjected to a closing force generated by a compression spring which avoids hysteresis that impairs the switching behavior of the pressure limiting valve. A tappet, which passes through a sealing ring and is exposed to a control pressure, is also capable of acting in a closing manner upon the pressure limiting valve. When there is no operative control pressure, the tappet is pushed back by the opening of the pressure limiting valve and is retained in this position by frictional forces brought about by a sealing ring. The switching plays of the pressure limiting valve are free of frictional forces. The pressure limiting valve is suitable for use in hydraulic motor vehicle brake systems.
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