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 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|