Wheel chair with independent suspension

摘要

A wheel chair has a rear swing axle pivotally connected to the seat frame and a spring shock absorber controls the relative movement therebetween. A front suspension is connected to the seat frame separately from the rear suspension and includes a floating beam carrying the front castor wheels and pivotally connected to the seat frame by four link control arms. Three shock absorbers acting between the front of the seat frame and the floating beam allow controlled vertical movement of the floating beam. A second embodiment has the rear wheels each connected by a separate swing arm pivotally connected to the seat frame at their front end and each swing arm also connected to the rear of the seat frame by a pair of control arms and spring shock absorber.