Abstract: Carry-on push aids and methods for propelling a wheelchair are provided. Carry-on push aids comprise a base with three, four or more wheels which is configured to securely engage the wheelchair and to mechanically support the wheelchair. The base comprises at least one drive unit powering one or more of the wheels, and the carry-on push aids further comprise a steering unit connected to and configured to control one or more of the wheels. For example, carry-on push aids may have rear powered wheels which operationally replace the securely engaged rear wheelchair wheels, and two front steerable wheels. The spacing between carry-on push aid rear wheels and between steering unit handles is wide enough to provide easy steering of the wheelchair supporting heavy patients, using the carry-on push aid handles only.

Abstract: The invention provides a hub motor for a wheeled conveyance having a stationary electric motor encased in a rotating, multi-part housing, at least one of the parts of the housing constituting a wheel disk and a wheel rim, and a reduction gear internal or external to the motor, the output member of which is adapted to drive at least one part of the multi-part housing, wherein the rim portion of the multi-part housing carries, and is in direct contact with, a wheel tire.

Abstract: A foldable armrest unit for a seat having a collapsible seat back, including an armrest one end of which is articulated to first joint device affixed to a lateral surface of the seat back, the armrest unit further including an armrest support member, one end of which is articulated to the armrest and the other end of which is articulated to second joint device affixed to a lateral surface of the seat; the armrest having three limit positions: a first limit position being the position of use, in which the seat back is in an upright position and the armrest is in a substantially horizontal position; a second limit position in which the seat back is still in the upright position, while the armrest is swung towards the seat back to facilitate access to and egress from the seat, and a third limit position in which the armrest is completely folded down, together with the collapsed seat back.

Abstract: The invention provides a hub motor for a wheeled conveyance having a stationary electric motor encased in a rotating, multi-part housing, at least one of the parts of the housing constituting a wheel disk and a wheel rim, and a reduction gear internal or external to the motor, the output member of which is adapted to drive at least one part of the multi-part housing, wherein the rim portion of the multi-part housing carries, and is in direct contact with, a wheel tire.