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公开(公告)号：WO2005089091A3
公开(公告)日：2005-09-29
申请号：PCT/US2004/035899
申请日：2004-10-27
Applicant: BELL HELICOPTER TEXTRON INC. , FENNY, Carlos, A. , BRYAN, Darrel, B. , SCHULTZ, David, P.
Inventor： FENNY, Carlos, A. , BRYAN, Darrel, B. , SCHULTZ, David, P.
Abstract: 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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公开(公告)号：WO2005089091A8
公开(公告)日：2005-12-08
申请号：PCT/US2004035899
申请日：2004-10-27
Applicant: BELL HELICOPTER TEXTRON INC , FENNY CARLOS A , BRYAN DARREL B , SCHULTZ DAVID P
Inventor： FENNY CARLOS A , BRYAN DARREL B , SCHULTZ DAVID P
CPC classification number: F15B13/024 , F04B1/2042 , F04B3/006 , F15B20/007 , F15B2211/20546 , F15B2211/50518 , F15B2211/511 , F15B2211/5157 , F15B2211/528 , F15B2211/8752 , Y10T137/2761
Abstract: 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.
Abstract translation: 公开了一种用于液压系统的两级减压阀。 两级减压阀具有第一级，其减轻液压系统压力在正常工作压力和高达所选阀值压力水平之上的增加，以及将液压系统压力降低至所选择的降低的操作压力的第二级， 响应于超过阈值压力水平的操作压力的增加而低于正常工作压力。
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公开(公告)号：WO2005089091A2
公开(公告)日：2005-09-29
申请号：PCT/US2004035899
申请日：2004-10-27
Applicant: BELL HELICOPTER TEXTRON INC , FENNY CARLOS A , BRYAN DARREL B , SCHULTZ DAVID P
Inventor： FENNY CARLOS A , BRYAN DARREL B , SCHULTZ DAVID P
CPC classification number: F15B13/024 , F04B1/2042 , F04B3/006 , F15B20/007 , F15B2211/20546 , F15B2211/50518 , F15B2211/511 , F15B2211/5157 , F15B2211/528 , F15B2211/8752 , Y10T137/2761
Abstract: 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.
Abstract translation: 公开了一种用于液压系统的两级泄压阀。 两级泄压阀具有第一阶段和第二阶段，第一阶段解除液压系统压力在正常操作压力上的增加并且达到选定的阈值压力水平，第二阶段使液压系统压力降低至选定的降低的操作压力， 响应于阈值压力水平上的操作压力的增加而低于正常操作压力。
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公开(公告)号：WO2003098052A1
公开(公告)日：2003-11-27
申请号：PCT/US2003/015292
申请日：2003-05-16
Applicant: BELL HELICOPTER TEXTRON INC. , FENNY, Carlos A. , SCHULTZ, David P. , PRICE, Ian L. , CURD, David A.
Inventor： FENNY, Carlos A. , SCHULTZ, David P. , PRICE, Ian L. , CURD, David A.
IPC: F15B11/08
CPC classification number: B64C13/42 , B64C27/28 , B64C29/0033 , F15B18/00 , F15B20/002 , F15B20/008 , Y10T137/87201 , Y10T137/87209
Abstract: An integrated three function valve (ITFV) that combines the functions of a bypass valve (e.g. 183a, 185a, 161a) into a single assembly is disclosed. The ITFV allows continued operation after any two failures. With the integrated three function valve, no combination of electrical or hydraulic component failures, regardless of expected failure rate, will prevent an actuator from continued safe operation
Abstract translation: 公开了将旁通阀（例如，183a，185a，161a）的功能组合成单个组件的集成三功能阀（ITFV）。 ITFV允许在任何两个故障后继续运行。 使用集成的三功能阀，不考虑预期的故障率，电气或液压部件故障的组合将阻止执行器继续安全运行
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