Powered wheelchairs

Devices with powered propulsion, intended to provide wheeled mobility with a seating support system for a person with limitation in mobility; the motor power is derived from an integral source of electric or combustion power. Included are, e.g. stand-up powered wheelchairs (wheelchairs that are capable of raising and maintaining a person in a standing position), reclining powered wheelchairs, wheelchairs with elevating or tilt-in-space seats, snow wheelchairs, beach wheelchairs, wheelchair underframes.