Patent ID: 8297388

Claim:
A wheelchair comprising: a base having a left and a right side; and at least two wheels on each of said left and right sides of the base, the at least two wheels including a motorized wheel and a castor wheel; wherein each of said wheels is supported by a respective suspension arm, with each suspension arm being pivotally coupled to the base at a pivot axis; wherein the pivot axes of the suspension arm of the castor wheel and of the suspension arm of the motorized wheel on the left and right side of the wheelchair, respectively, are situated next to each other, horizontally offset, with both of the pivot axes in between the castor and the motorized wheel; wherein a force transmitting device directly connects the suspension arm of the castor wheel of one side of the base with the suspension arm of the motorized wheel of the same side of the base so that upon upward pivoting of the suspension arm of the castor wheel a downward force is exerted by the suspension arm of the motorized wheel; and wherein the pivot axes of the suspension arms of the castor wheels are situated at the same height or lower than the axes of rotation of the castor wheels, with respect to the ground, when the motorized wheels and the castor wheels stay on the ground.