| 摘要 |
Lifting apparatus and a wheeled vehicle upon which it can be mounted. There is provided in accordance with an embodiment of the present invention lifting apparatus comprising a scissors mechanism including scissor arms having formed thereon a curved cam path, a cam disposed between the scissor arms for engagement therewith and selectable separation thereof for producing lifting motion thereof, a load support mounted onto the scissor arms and apparatus for selectably tilting the load support with respect to the scissors mechanism. There is further provided in accordance with an embodiment of the present invention a wheeled vehicle comprising a base and a plurality of wheel assemblies supporting the base on a generally horizontal surface, at least one of the plurality of wheel assemblies comprising a castor assembly including a wheel rotatably mounted on a wheel mounting and apparatus for connecting the wheel mounting to the base and defining first and second axes of rotation, and preferably wherein at least one of the plurality of wheel assemblies comprises a steering wheel rotatably mounted onto a wheel mounting and steerable apparatus rotatably coupling the wheel mounting onto the base and permitting steering over at least 180 DEG of arc.
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