Abstract: A wheelchair includes a seat carried by a frame including at least one front wheel and opposed rear wheels. A circular handrim is coupled to one of the rear wheels with spaced-apart connecting pins. A framework is secured to the handrim, and a ratchet operatively couples an inner end of a lever to the framework. The lever extends upwardly from the ratchet to the outer end allowing a user seated in the seat of the wheelchair to grasp the outer end of the lever and move the lever between a first position and a second position. The ratchet acts on the framework to impart rotation to the one of the rear wheels in response to movement of the lever between the first and second positions.

Abstract: A hand grip strengthening and competition apparatus includes first and second alarms and a power source carried by an elongate body. A first lever is mounted to the elongate body for pivotal movement between an open position and a closed position closing a first circuit between the power source and the first alarm energizing the first alarm. A second lever is spaced from the first lever and is mounted to the elongate body for pivotal movement between an open position and a closed position closing a second circuit between the power source and the second alarm energizing the second alarm. An elongate flexible, substantially non-stretchable connector has a first end attached to the first lever, a second end attached to the second lever, and length extending from the first end to the second end preventing the first and second levers from concurrently assuming their respective closed positions.

Abstract: A wheelchair includes a seat carried by a frame including at least one front wheel and opposed rear wheels. A circular handrim is coupled to one of the rear wheels with spaced-apart connecting pins. A framework is secured to the handrim, and a ratchet operatively couples an inner end of a lever to the framework. The lever extends upwardly from the ratchet to the outer end allowing a user seated in the seat of the wheelchair to grasp the outer end of the lever and move the lever between a first position and a second position. The ratchet acts on the framework to impart rotation to the one of the rear wheels in response to movement of the lever between the first and second positions.