发明名称 |
Dockboards |
摘要 |
A dockboard comprising a ramp assembly, a frame for supporting the ramp assembly for pivotal movement in a pit formed in a loading dock, a hydraulic piston-cylinder assembly mounted on the bottom of the pit in the loading dock for pivoting the ramp assembly with respect to the supporting means, a lip assembly pivotally mounted on the free end of the ramp assembly, a hydraulic piston-cylinder assembly mounted on the ramp assembly for pivoting the lip assembly to an extended position forming a continuation of said ramp assembly, the ramp assembly including a tread plate and a plurality of hinge plates mounted in a parallel spaced relation on the tread plate, each hinge plate including an ear, and a stop bar mounted on the end of the ramp assembly in the path of travel of the ears for limiting the pivotal movement of the lip assembly.
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申请公布号 |
US4718136(A) |
申请公布日期 |
1988.01.12 |
申请号 |
US19860889803 |
申请日期 |
1986.07.23 |
申请人 |
FISHER, PATRICK W.;HAGEN, JAMES P.;MEYER, WALTER E. |
发明人 |
FISHER, PATRICK W.;HAGEN, JAMES P.;MEYER, WALTER E. |
分类号 |
B65G69/28;(IPC1-7):E01D1/00 |
主分类号 |
B65G69/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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