发明名称 Billboard advertising copy hoist system
摘要 A hoist system can be used to raise articles. The hoist system can include a mounting structure attachable to a billboard structure, a pole member fastenable to a mounting structure and a winch assembly. The winch assembly has at least one component coupled to the pole. The winch assembly is capable of winding a flexible line. The hoist system can be utilized to raise and lower vinyls, other signage equipment or tools to billboard structures. The pole can be a single piece unit having a bend.
申请公布号 US7367462(B1) 申请公布日期 2008.05.06
申请号 US20060330755 申请日期 2006.01.12
申请人 TPI TECHNOLOGY GROUP, INC. 发明人 MCMURRAY ROBERT B.;RIEDL PAUL T.
分类号 B66C23/20 主分类号 B66C23/20
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