Abstract: A kerb climbing device for a wheelchair having a pair of wheels of relatively small diameter comprises a guide arm and a lifting arm mounted centrally between the wheels for pivotal movement about a horizontal axis extending between opposed sides of the wheelchair. The guide arm and lifting arm extend forwardly of the wheels in an operative position of the device in which the free end of the lifting arm is spaced above the free end of the guide arm. The free end of the guide arm is arranged for locating against the kerb and the lifting arm is pivotal in response to engagement of the free end of the guide arm with the kerb to lower the free end of the lifting arm onto the kerb and lift the wheels of the ground thereby facilitating mounting of the kerb.
Abstract: A wheelchair having four ground engaging wheels, two at the front and two at the rear, and four electric motors, one for each wheel, wherein each wheel is connected to a respective electric motor for driving the wheelchair and the front wheels are mounted on respective steering arms of a steering linkage driven by an electric actuator coupled to a track rod connecting the steering arms for steering the wheelchair.
Abstract: A foldable wheelchair having opposed main side frames each comprising front and rear members supported on respective front and rear wheels and connected by upper and lower cross members, and a back member mounted for folding movement relative to the rear member wherein the side frames are connected by first and second foldable links for maintaining the side frames spaced apart in the erected condition of the wheelchair in which the back members are aligned with the rear members and support a flexible back panel, and the wheelchair is collapsible to a compact folded condition by folding the links to move the side frames adjacent to each other and by folding the back members to extend downwardly adjacent to the rear members and the associated rear wheels.
Abstract: An improved wheelchair having electrically powered drive motors in which a battery support tray is secured within an opening in a side frame of the wheelchair. Two batteries can be supported, one on each side frame, whereupon the conventional undercarriage battery support rack may be eliminated. Each side frame of the wheelchair contains a drive motor and battery support tray and forms a self-contained assembly such that left and right hand side assemblies can be joined together by foldable links having any desired length to provide a correspondingly desired seat width.
Abstract: A wheel chair having electric driving means arranged to drive the rear wheels of the chair, each rear wheel and its associated electric driving means is supported by a wheel plate connected to the wheel chair frame by a resilient mounting embodying a suspension media providing independent suspension for the rear wheels. The electric driving means comprises one electric motor for each rear wheel with drive transmission to the associated wheel.