发明名称 Detachable folding trailer ramp
摘要 A ramp for flatbed trucks and trailers which may be attached or removed from the vehicle in a matter of seconds and requires no modification of the trailer. The invention utilizes two ramp sections which are pivotally secured together by a double piano hinge assembly and driven by a pair of hydraulic cylinders. A series of legs depending from the forward edge of the from ramp engage the sockets commonly found at the rear of a flatbed as the forward vertical framework of the ramp engages the trailer's rear safety bar for added stability and strength.
申请公布号 US5678984(A) 申请公布日期 1997.10.21
申请号 US19960724103 申请日期 1996.09.30
申请人 PETERSEN, LARRY M. 发明人 PETERSEN, LARRY M.
分类号 B60P1/43;(IPC1-7):B65G67/02 主分类号 B60P1/43
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