发明名称 |
Proportioning control valve with spring biased control piston |
摘要 |
A proportioning control valve for a fluid pressure braking system for a tractor-trailer combination vehicle permits unproportioned communication of control pressure when the tractor is pulling a trailer but proportions communication of control pressure when the tractor is operated without a trailer to establish a proportionally lower pressure level at the outlet of the valve. When the pressure level at the control port exceeds a predetermined level established by a spring, the control valve proportions at a rate which increases the pressure level at the outlet at a rate greater than the rate of increase of control pressure until the unproportioned pressure level is attained.
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申请公布号 |
US4758051(A) |
申请公布日期 |
1988.07.19 |
申请号 |
US19870095275 |
申请日期 |
1987.09.11 |
申请人 |
ALLIED CORPORATION |
发明人 |
SZUDY, JAMES E.;MARSH, ANDREW |
分类号 |
B60T8/26;B60T8/18;B60T8/20;B60T11/34;(IPC1-7):B60T11/12 |
主分类号 |
B60T8/26 |
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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