Powered wheelchair with adjustable center of gravity and independent suspension

摘要

A wheelchair includes a frame (10) having first (12) and second (20) longitudinal sides connected by a bridge (28) and a seat module carried by the frame. A first power drive assembly is disposed on the frame first longitudinal side. The first power drive assembly includes a first swing arm (30) pivotally secured to the frame, a first motor (70) mounted to the first swing arm and a first wheel (94) operably connected to the first motor. A second power drive assembly is disposed on the frame second longitudinal side. The second power drive assembly includes a second swing (34) arm pivotally secured to the frame, a second motor (70) mounted to the second swing arm and a second wheel (94) operably connected to the second motor. A first resiliently biased anti-tip assembly (100) is secured to both the frame first longitudinal side and the first motor. A second resiliently biased anti-tip assembly (100) is secured to both the frame second longitudinal side and the second motor. A power supply (222) is mounted on the frame for powering the first and second motors.