公开(公告)号：US08459372B1

公开(公告)日：2013-06-11

申请号：US12558402

申请日：2009-09-11

申请人： Wayne Branson Collins ,  Michael J. Collins

发明人： Wayne Branson Collins ,  Michael J. Collins

IPC分类号： E21B4/12

CPC分类号： B23B45/00 ,  B23B2260/128 ,  B25D2250/101

摘要： A hand-held power drill incorporates an electronic voltage sensor having a sensing input conductively connected to the drill chuck so that a drill bit held by the chuck serves as a voltage sensing element. The electronic voltage sensor can operate an audible or visible warning device, and can also disable the drill motor, when the drill bit is in close proximity to a live wire. A two pole switch with successively closed sets of contacts allows the drill to be used as a voltage probe without operating the drill motor. An auxiliary by-pass switch gives the operator the option to operate the drill even when it is in proximity to a live wire.

摘要翻译： 手持式动力钻具包括具有传感输入的电子电压传感器，传感输入与钻头卡盘导电连接，使得由卡盘保持的钻头用作电压感测元件。 电子电压传感器可以操作可听见的或可见的警告装置，并且当钻头位于活动导线附近时也可以禁用钻机电机。 具有连续关闭的触点组的双极开关允许钻头用作电压探针而不操作钻机电机。 辅助旁路开关为操作人员提供操作钻孔的选项，即使在接近活动导线时也是如此。