发明名称 |
Two-stage pressure relief valve |
摘要 |
A two-stage pressure relief valve for use with hydraulic systems is disclosed. The two-stage pressure relief valve has a first stage that relieves increases in hydraulic system pressure over the normal operating pressure and up to a selected threshold pressure level, and a second stage that brings the hydraulic system pressure down to a selected reduced operating pressure that is below the normal operating pressure in response to increases in the operating pressure over the threshold pressure level.
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申请公布号 |
US2005129531(A1) |
申请公布日期 |
2005.06.16 |
申请号 |
US20030736161 |
申请日期 |
2003.12.15 |
申请人 |
FENNY CARLOS A.;BRYAN DARREL B.;SCHULTZ DAVID P. |
发明人 |
FENNY CARLOS A.;BRYAN DARREL B.;SCHULTZ DAVID P. |
分类号 |
F04B1/20;F04B3/00;(IPC1-7):F04B49/00 |
主分类号 |
F04B1/20 |
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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