发明名称 Lifting device for raising and freeing stuck vehicles
摘要 A portable lifting device for raising and freeing stuck and mired vehicles including a pair of wide spaced generally flat channel iron supporting plates spanned and having a wide flat channeled base plate removably connected thereto with the lower end of a two part telescopically adjustable lever fulcrummed therein. The lever is angled toward the stuck vehicle and a chain from a towing vehicle is positioned over the forked upper end of the lever and is attached to the vehicle so that when a pull is exerted on the chain the lever swings upwardly and forwardly and lifts the attached end of the vehicle until the lever falls free of the chain permitting the vehicle to be towed thereover without interruption.
申请公布号 US4055330(A) 申请公布日期 1977.10.25
申请号 US19770777823 申请日期 1977.03.15
申请人 CHAPMAN, DONALD A. 发明人 CHAPMAN, DONALD A.
分类号 B66F19/00;(IPC1-7):B66F3/00 主分类号 B66F19/00
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