发明名称 CRANE SAFETY DEVICE AND METHODS
摘要 An improved crane warning system which includes acceleration sensors, motion sensors, hydraulic sensors, remote communications and/or a camera. The crane warning system may include a crane warning device integrated into the ball of the crane.
申请公布号 US2002175824(A1) 申请公布日期 2002.11.28
申请号 US19990383192 申请日期 1999.08.26
申请人 SHAW JACK B. 发明人 SHAW JACK B.
分类号 B66C13/44;B66C13/46;B66C15/04;B66C15/06;(IPC1-7):G08B21/00 主分类号 B66C13/44
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