专利名称：Hydraulic cylinder extending in three force modes
发明人：John P. Conway
不要抱怨申请号：US06/226550
申请日：19810121
公开号：US04375181A
刘志武
公开日：老师简笔画女
战胜英文
徐复
19830301
专利内容由知识产权出版社提供
沉静的反义词摘要：A multiple mode hydraulic piston asmbly employing a regenerative hydraulic circuit which when incorporated in the piston of a hydraulic cylinder and asmbled with a pressureized hydraulic source through appropriate piping and valving, will quentially permit, restrict, and block liquid flow through the piston and will thus extend its piston rod in multiple force modes, namely a low force rapid extension mode, a moderate force rapid extension mode, and a high force extension mode. In respon to fluid pressures within the cylinder chamber the multiple mode piston asmbly automatically changes operational modes. First bi- directional flow is provided between opposing chambers, then uni- directional flow is provided from the rod end to the back end chamber, and finally flow between the chambers is blocked. A modified embodiment provides a free motion mode wherein a modest external force can displace the piston in either direction. An additional embodiment provides an arrangement of the elements offt from the geometrical axis of the piston. An embodiment of the foregoing construction provides a double- ended piston rod configuration.
申请人：CONWAY; JOHN P.
代理人：Benjamin G. Weil东施效颦的意思
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