Abstract: The wheelchair attachments are configured for removable attachment to a wheelchair to facilitate use of the wheelchair by occupants and/or attendants. One attachment is a retractable tray spanning the armrests at the front of the chair when deployed and retracting between the chair structure and a wheel for storage. Another attachment is a series of interchangeably installable handgrips or handles removably installable to the front or back of the chair for use by an attendant. At least some of the various handgrips or handle assemblies provide horizontal and/or vertical adjustment. Yet another attachment is an underseat storage compartment, primarily accessible by an attendant from the back of the chair. All of the various attachments may be installed upon and/or used with a wheelchair independently of one another or in combination with one another, or may be adapted for use with other devices as well.

Abstract: The pedal drive mechanism comprises a pedal arm immovably affixed across the secant of a drive gear, with the drive gear and attached pedal arm rotating through a partial revolution during operation. The drive gear meshes with a smaller pinion gear installed concentrically on the drive wheel axle. The pedal arm extends generally upwardly in its initial position prior to actuation of the mechanism, with operation requiring a rearward and downward kick or push. This is a natural motion for the operator of a scooter type vehicle, and the downward force also transfers a greater force to the drive wheel(s) for better traction during starting and operation. A return spring rotates the pedal arm, drive gear, and pinion gear back to their original starting positions when pressure is released on the pedal, with a one-way clutch disengaging the pinion gear from the drive wheel(s) during the pedal return stroke.

Abstract: The wheelchair attachments are configured for removable attachment to a wheelchair to facilitate use of the wheelchair by occupants and/or attendants. One attachment is a retractable tray spanning the armrests at the front of the chair when deployed and retracting between the chair structure and a wheel for storage. Another attachment is a series of interchangeably installable handgrips or handles removably installable to the front or back of the chair for use by an attendant. At least some of the various handgrips or handle assemblies provide horizontal and/or vertical adjustment. Yet another attachment is an underseat storage compartment, primarily accessible by an attendant from the back of the chair. All of the various attachments may be installed upon and/or used with a wheelchair independently of one another or in combination with one another, or may be adapted for use with other devices as well.