发明名称 Anti-crush tool
摘要 A tool useful to plumbers and other persons who work with pipe and tubing, to facilitate gripping and applying torque to a free end of a piece of pipe or tubing includes a plug portion of cylindrical shape that is driven into the free end of the pipe for the purpose of reinforcing the wall of the pipe so that it can withstand the radial forces exerted by a wrench or over-center pliers during the application of torque to the pipe. A shoulder portion limits the depth to which the plug portion can be inserted into the pipe, and a handle portion is connected to the shoulder portion for convenience in handling the tool.
申请公布号 US5195405(A) 申请公布日期 1993.03.23
申请号 US19920838906 申请日期 1992.02.21
申请人 FOLKROD, MICHAEL J. 发明人 FOLKROD, MICHAEL J.
分类号 B25B13/50;B25B23/00;B25B33/00 主分类号 B25B13/50
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