发明名称 Drilling/bolting machine having a manual operator input device with enable switch and related methods
摘要 This invention relates to the control of a machine for performing drilling or bolting operation, such as in an underground mine. In one aspect, the invention comprises a system including an input device for manually controlling at least one aspect of the drilling or bolting operation and a controller associated with at least one neutral switch. An actuator actuates the drilling or bolting operation and includes a valve associated with the input device and the neutral switch. The input device is operative for controlling the drilling or bolting operation only when the valve is in a neutral position according to the neutral switch. Related input devices and methods are also disclosed.
申请公布号 US7721816(B1) 申请公布日期 2010.05.25
申请号 US20040887245 申请日期 2004.07.08
申请人 J.H. FLETCHER & CO. 发明人 WILSON HENRY E.;COLLINS CRAIG M.
分类号 E21B7/00;E21B;E21B44/00;E21B47/00;E21D20/00 主分类号 E21B7/00
代理机构 代理人
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