发明授权
- 专利标题: Multi-stage hydraulic cylinder assembly
- 专利标题(中): 多级液压缸总成
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申请号: US13420130申请日: 2012-03-14
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公开(公告)号: US09151304B2公开(公告)日: 2015-10-06
- 发明人: Bryan Michael Harper , James Arthur Whitfield, Jr.
- 申请人: Bryan Michael Harper , James Arthur Whitfield, Jr.
- 申请人地址: US VA Newport News
- 专利权人: Liebherr-Mining Equipment Company
- 当前专利权人: Liebherr-Mining Equipment Company
- 当前专利权人地址: US VA Newport News
- 代理机构: Dilworth & Barrese LLP
- 优先权: DE102011013987 20110315
- 主分类号: F01B7/20
- IPC分类号: F01B7/20 ; F15B15/22 ; F15B15/16 ; F16F9/06
摘要:
A cushion arrangement for smoothing stage changes in an hydraulic cylinder and including at least one compression chamber of variable volume with a movable and/or deformable chamber wall element displaceable by at least one of the pistons when approaching the transition zone between first and second stages of displacement. The compression chamber is operatively connected to a gas volume to be compressed upon displacement of the chamber wall element.
公开/授权文献
- US20120255432A1 MULTI-STAGE HYDRAULIC CYLINDER ASSEMBLY 公开/授权日:2012-10-11
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