发明授权
- 专利标题: Multiple-stage hydraulic cylinder
- 专利标题(中): 多级液压缸
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申请号: US562306申请日: 1995-11-22
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公开(公告)号: US5613418A公开(公告)日: 1997-03-25
- 发明人: Heinz Guido
- 申请人: Heinz Guido
- 申请人地址: DEX Oberhausen
- 专利权人: MAN Gutehoffnungshutte Aktiengesellschaft
- 当前专利权人: MAN Gutehoffnungshutte Aktiengesellschaft
- 当前专利权人地址: DEX Oberhausen
- 优先权: DEX4209649.9 19920325
- 主分类号: F15B11/036
- IPC分类号: F15B11/036 ; F15B15/14 ; F15B15/16 ; F15B11/18 ; F01B7/20
摘要:
A multiple-stage hydraulic cylinder for shifting loads by exerting different forces over different distances, in which a hollow-piston cylinder is provided with a hollow piston rod. The hollow piston rod accommodates at least one additional long-stroke cylinder. The hollow piston rod, moreover, comprising a cylinder tube surrounding the long-stroke cylinder. Connections are provided for hydraulic fluid to move the cylinders. These connections are provided on the hollow piston rod and the long-stroke cylinder for admitting fluid to move the hollow-piston cylinder and the long-stroke cylinder.
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