Device for reducing the energy required in order to diminish tractive resistance

摘要

Wheel arrangement comprising a primary wheel to be provided with a tyre and a secondary wheel (10) which can rotate on an internal tread (11) of the primary wheel. In order to permit a displacement of the force acting on the primary wheel relative to its axle (2, 61), the secondary wheel carried parallel to this by way of an arm (5, 8, 14), is adjustably arranged with regard to its contact point on the internal tread of the primary wheel. <IMAGE>