Patent ID: 9320661
Filing Date: 2016-04-26
CPC Classification: A61G,B60G,B60K,B60Y,Y10S

Claim Text:
1. A wheelchair comprising: a chassis frame; a pair of front link arms, each front link arm directly and pivotally connected to the chassis frame at a respective first pivot axis by a first pivot axle; a pair of front caster wheels, each front caster wheel fixed to a respective front link arm; a pair of drive assemblies, each drive assembly non-pivotally, fixedly mounted to a respective front link arm and comprising a drive wheel and a motor operatively connected to the respective drive wheel; a pair of rear link arms, each rear link arm directly and pivotally connected to the chassis frame at a respective second pivot axis by a second pivot axle, and a pair of rear caster wheels, each rear caster wheel fixed to a respective rear link arm, wherein, the first and second pivot axes are arranged generally below a respective rotational axis of the drive wheels, and wherein each front link arm is operatively connected to an adjacent rear link arm by a respective coupling, which is arranged to transmit pivotal movement of one of the front and rear link arms about the respective first or second pivot axis to an opposite pivotal movement of the other of the front and rear link arms about the respective first or second pivot axis.