发明名称 Jackhammer with a lift assist
摘要 The present invention relates to an integrated percussion power tool which contains a percussion mechanism and a lift assist mechanism to reduce the physical demands for its operation by facilitating the lifting and extracting of the percussion power tool. In general, the integrated percussion power tool is a T-shaped machine which has a vertical cylindrical body with two handles, two hand control levers cross the top, and a working tool and a lifting foot on the bottom for engaging with a working surface. The first hand lever is for controlling the operation of the percussion mechanism, whereas the second hand lever is for manipulating the operation of the lift assist mechanism. The percussion mechanism and the lift assist mechanism are both housed in the vertical cylindrical body of the integrated percussion power tool.
申请公布号 US2007240890(A1) 申请公布日期 2007.10.18
申请号 US20070724546 申请日期 2007.03.15
申请人 SORRIC RONALD J;SORRIC RONALD W 发明人 SORRIC RONALD J.;SORRIC RONALD W.
分类号 E21B19/00 主分类号 E21B19/00
代理机构 代理人
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