发明名称 Support and hoist systems
摘要 A support generally comprising a mast component, a boom component extending forwardly from the mast component, and a stabilizing component for maintaining the support in a working disposition. The support may be used in conjunction with a lifting pole for forming a hoist system. The support and hoist system may be used to support or raise and lower an object such as a chute for debris.
申请公布号 US5934437(A) 申请公布日期 1999.08.10
申请号 US19960655499 申请日期 1996.05.30
申请人 JOYSUN LTD. 发明人 ANSON, ANDREW PHILIP;VANDELINDE, HENRY
分类号 B66C23/20;(IPC1-7):B65G11/00 主分类号 B66C23/20
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