发明名称 |
Energy dissipation valves for hydraulic cylinders |
摘要 |
A hydraulic actuator comprises a cylinder, a piston reciprocatingly received within the cylinder, a piston rod connected to the piston and a pressure release mechanism which allows hydraulic fluid to pass from a first side of the piston to a second side of the piston when the actuator encounters shock loading. This permits the piston to move. The pressure relief mechanism includes a passageway extending from the first side of the piston to the second side of the piston and a valve member adjacent to the passageway which releasably engages the piston. The valve member has a closed position where the valve member closes the passageway and engages the piston. A resilient member biases the valve member towards the closed position. A valve member limiter limits movement of the valve member away from the closed position. The resilient member has a rigidity sufficiently great so that movement of the valve member away from the closed position is more dependent upon the rigidity of the resilient member than upon a preload applied to the valve member.
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申请公布号 |
US2006083641(A1) |
申请公布日期 |
2006.04.20 |
申请号 |
US20040961372 |
申请日期 |
2004.10.12 |
申请人 |
ELLENS MARK;LEITE EDWARD M;DEMPSTER GRAEME M;HOWE JASENN M |
发明人 |
ELLENS MARK;LEITE EDWARD M.;DEMPSTER GRAEME M.;HOWE JASENN M. |
分类号 |
F04B35/04;F04B17/00 |
主分类号 |
F04B35/04 |
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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