Four wheel drive wheelchair has internal combustion engine driving hydraulic pump to actuate wheel drive hydraulic motors

摘要

The four wheel drive wheelchair (1) has a chassis (2) with a seat (3) and motors (6,11,12,13,15) to move the chair to the front and rear. The motors include an internal combustion engine (6) operating a hydraulic pump (11,12) for a circuit (13,15) to drive the wheels (24). The motors can be controlled by a lever (7) to control flow to the wheel motors.