发明授权
- 专利标题： Spider with discrete die supports
- 专利标题（中）： 具有离散模具支架的蜘蛛
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申请号： US10949151申请日： 2004-09-24
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公开(公告)号： US07267168B1公开(公告)日： 2007-09-11
- 发明人: David L. Sipos
- 申请人： David L. Sipos
- 代理商 William Stagg; Chad Grand
- 主分类号： E21B19/10
- IPC分类号： E21B19/10
摘要：
The spider, arranged for support on a drilling rig, is fitted with a plurality of slips peripherally distributed about a slip bowl. Each slip has a plurality of pipe gripping dies distributed vertically and resting on individual abutment surfaces on the slip. Each slip has a generally vertical slide way to receive mating surfaces on the die for radial constraint of the dies.
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