发明名称 ROTORHOOK
摘要 This pivoting hook system is designed to give the operator or the spotter on the building control over the swing of material being lifted. It provides a safer distance from under the load, as workers are in potential danger at times when handling tether ropes attached to beams, trusses, etc. as they guide them into place. This device provides a safer alternative to tying a rope to loads for positioning.
申请公布号 US2009295178(A1) 申请公布日期 2009.12.03
申请号 US20080156424 申请日期 2008.06.02
申请人 CORCORAN THOMAS PAUL 发明人 CORCORAN THOMAS PAUL
分类号 B66C1/34 主分类号 B66C1/34
代理机构 代理人
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