发明授权
- 专利标题： Hydraulic chuck
- 专利标题（中）： 液压卡盘
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申请号： US939825申请日： 1997-09-29
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公开(公告)号： US5954346A公开(公告)日： 1999-09-21
- 发明人: Gordon Leonard McLaren
- 申请人： Gordon Leonard McLaren
- 申请人地址： CAX North Bay
- 专利权人： Boart Longyear Inc.
- 当前专利权人： Boart Longyear Inc.
- 当前专利权人地址： CAX North Bay
- 主分类号： B23B31/173
- IPC分类号： B23B31/173 ; B23B5/22
摘要：
A hydraulic chuck for a drill string has a hydraulic actuator to operate the jaws. The actuator remains stationery while the spindle is rotated and a pair of skirts attached to the actuator cover the bearing assemblies. The jaws are supported in slots in the spindle and are part cylindrical to reduce stress in the spindle. The chuck is secured to a drive unit by bolts received in open slots in an attachment flange to facilitate attachment of the chuck after routine maintenance.
公开/授权文献
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