发明名称 Apparatus for manually moving loads
摘要 Apparatus to reduce the force required to move a load along a flat or inclined surface utilizing an assembly of two traction wheels on a common axis whereby one wheel is free to rotate and the other is prevented from rotation and vice versa by the use of a uni-directional control arm system and means for applying a horizontal oscillating force in alternating left and right hand directions in the form of a relatively long handle attached to the axle housing midway between said traction wheels. The wheel assembly is particularly useful for trailers for carrying animals, small boats, recreational vehicles, two-wheeled hand trucks and similar applications.
申请公布号 US4799697(A) 申请公布日期 1989.01.24
申请号 US19860919655 申请日期 1986.10.16
申请人 WILLIAMSON, CALVIN C.;WILLIAMSON, JOAN 发明人 WILLIAMSON, CALVIN C.;WILLIAMSON, JOAN
分类号 B60D1/66;B60S9/18;B62B1/10;(IPC1-7):B60K9/00 主分类号 B60D1/66
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