发明授权
- 专利标题: Telescopic hydraulic hoist
- 专利标题(中): 伸缩液压起重机
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申请号: US09765446申请日: 2001-01-22
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公开(公告)号: US06450083B1公开(公告)日: 2002-09-17
- 发明人: Steven Clare Dawson
- 申请人: Steven Clare Dawson
- 主分类号: F01B720
- IPC分类号: F01B720
摘要:
A telescoping hydraulic hoist which improves stability and rigidity in the extended position without sacrificing the maximum extension length of the hoist and with fewer machined parts which may be dislodged or damaged in operation. The base member has a recess into which intermediate and inner tube stages recede when the hoist is in a fully collapsed position, and a stop-collar on the gland nut bearings overlaps the exposed end of the next broader tube stage, defining a limit of retraction for each intermediate tube stage, so that a tube stage when fully retracted contacts the exposed end of the next broader tube stage, thus dispensing with the need for stop rings.
公开/授权文献
- US20020096043A1 TELESCOPIC HYDRAULIC HOIST 公开/授权日:2002-07-25
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