Abstract: A scooter has at least two drive wheels which are placed in alignment with or forward a location on the scooter defined by the approximate location of the head and shoulders of a user of the scooter. The scooter may optionally have a plurality of pivot arms and pivot arm casters extending rearward of the scooter's frame for facilitating rearward stability of the scooter. The scooter may be powered by one or more motors coupled to one or more of the wheels. The scooter may also be easily dissembled by detaching the front portion of the scooter from the rear portion of the scooter.

Abstract: A scooter has a steering mechanism linked to a front wheel and a plurality of rear wheels whereby an angular change in the steering mechanism is translated into an angular change in the front wheel and the rear wheels. The direction of the angular change may be different for the front wheel as compared to the rear wheels. The steering mechanism may optionally include a plurality of linkages, a plurality of Ackermann linkages, a pulley mechanism, a push-pull cable, a torque tube and a crank. The scooter may be powered by one or more motors coupled to one or more of the wheels.

Abstract: A scooter has at least two drive wheels which are placed in alignment with or forward a location on the scooter defined by the approximate location of the head and shoulders of a user of the scooter. The scooter may optionally have a plurality of pivot arms and pivot arm casters extending rearward of the scooter's frame for facilitating rearward stability of the scooter. The scooter may be powered by one or more motors coupled to one or more of the wheels.

Abstract: The invention provides a back support assembly mounted to the upright posts or canes of a wheelchair. The back support assembly can be adjusted independently with respect to a number of modes of adjustment including seat depth and width, the back height above the seat, and the angle of incline with respect to a plane defined by the wheel chair canes to which the back support is mounted. The back support assembly has a back support that is mounted at four points to cane clamps on each of the canes. A quick release mechanism is provided by a locking pawl on a mounting arm which permits single-handed release and removal of the back support from the mounting hardware while retaining the desired adjustment when the back support is remounted on the wheelchair. The back support assembly is frameless, and eliminates the additional weight that a support frame or carriage would add.

Abstract: The invention provides a back support assembly mounted to the upright posts or canes of a wheelchair. The back support assembly can be adjusted independently with respect to a number of modes of adjustment including seat depth and width, the back height above the seat, and the angle of incline with respect to a plane defined by the wheel chair canes to which the back support is mounted. The back support assembly has a back support that is mounted at four points to cane clamps on each of the canes A quick release mechanism is provided by a locking pawl on a mounting arm which permits single-handed release and removal of the back support from the mounting hardware while retaining the desired adjustment when the back support is remounted on the wheelchair. The back support assembly is frameless, and eliminates the additional weight that a support frame or carriage would add.