发明名称 |
Proportional pressure control valve with control port pressure stabilization |
摘要 |
A proportional pressure control valve which includes an electric first stage pilot having a single outlet port configured to provide a variable pressurized hydraulic fluid to the outlet port and at a pressure that is proportional to an electric input signal and which is variable between first and second values and further includes a second stage hydraulic valve which has a spool reciprocally moveable in a bore between first and second positions indicative of a full ON and a full OFF condition. A fluid isolation chamber is oriented in the bore and in a region between a control port and a tank port in the fluid pathway therebetween. The interior wall of the bore and the first and second diameter regions on the spool are configured to always provide a controlled volume fluid flow rate between the control port and the fluid isolation chamber.
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申请公布号 |
US2006231147(A1) |
申请公布日期 |
2006.10.19 |
申请号 |
US20050107291 |
申请日期 |
2005.04.15 |
申请人 |
PRIDE STEVEN R II;BOWDEN CHARLES J |
发明人 |
PRIDE STEVEN R.II;BOWDEN CHARLES J. |
分类号 |
F15B13/043 |
主分类号 |
F15B13/043 |
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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