发明名称 Wall-lifting systems
摘要 A system for safe, efficient lifting of partially fabricated walls during light-frame construction. Such walls are built in a horizontal position and are manually rotated into a vertical position using a lifting apparatus mounted to one or more framing members of the wall. The lifting apparatus allows the wall to be positioned and held at an intermediate resting/safety point for protection of user during the lift. A method of use and kit comprising the lifting apparatus are also disclosed.
申请公布号 US8287221(B1) 申请公布日期 2012.10.16
申请号 US20090544065 申请日期 2009.08.19
申请人 VAN ROEKEL CHAD A. 发明人 VAN ROEKEL CHAD A.
分类号 B66F3/00;E04G21/16 主分类号 B66F3/00
代理机构 代理人
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