发明名称 |
Tri-cam axial extension to provide gripping tool with improved operational range and capacity |
摘要 |
An improvement in a gripping tool having a grip surface carried by movable grip elements and cam linkages to radially move the grip surface from a retracted to an extended position. The improvement involves a tri-cam linkage with cam pairs supporting bi-rotary to axial stroke activation and further cam linkages to cause radial stroke of the tool grip surface as a function of axial stroke. |
申请公布号 |
US8424939(B2) |
申请公布日期 |
2013.04.23 |
申请号 |
US20090505446 |
申请日期 |
2009.07.17 |
申请人 |
SLACK MAURICE WILLIAM;NOETIC TECHNOLOGIES INC. |
发明人 |
SLACK MAURICE WILLIAM |
分类号 |
E21B31/00;E21B19/10 |
主分类号 |
E21B31/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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