发明名称 TELESCOPIC EXTENSION DEVICE FOR A HANDLE OF A WRENCH
摘要 A telescopic extension device for a handle of a wrench includes three sliding overlapping concentric tubular members. A mechanism is for retaining the three tubular members in an extended position. When the three tubular members are in the extended position, the handle of the wrench will snugly fit into a front end of the first tubular member having the smallest diameter, so as to help increase the amount of torque applied by a person using the wrench to either loosen and tighten a nut and bolt.
申请公布号 US2013098212(A1) 申请公布日期 2013.04.25
申请号 US201113280337 申请日期 2011.10.24
申请人 INGERSOLL DAVID;VANAS RUSTY 发明人 INGERSOLL DAVID;VANAS RUSTY
分类号 B25G1/04;B25B23/16 主分类号 B25G1/04
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