发明名称 Electrical grounding rod driving device
摘要 The present invention is a double-headed hammer slidingly encompassing a ground rod driving shaft having a single anvil affixed thereto which can be selectively engaged by either hammer. The driving shaft has a recess in each end to receive the grounding rod, depending upon whether the action is to initiate and continue the insertion of grounding rod into the ground or to complete the insertion of the rod in accordance with the provisions of the Code. The present invention does not require the operator to take a position above the ground or to use any other instrument to make the complete and proper insertion of the grounding rod into the ground.
申请公布号 US4557409(A) 申请公布日期 1985.12.10
申请号 US19840591311 申请日期 1984.03.19
申请人 E & J DEMARK, INC. 发明人 HECOCK, J. EDWIN;MUMPER, JAMES O.
分类号 B25B27/02;B25D1/00;(IPC1-7):B25C1/02;B25D9/00 主分类号 B25B27/02
代理机构 代理人
主权项
地址