Patent ID: 7216728

Claim:
A motorized apparatus for towing a wheelchair, and the motorized apparatus comprising: a framework comprising a chassis; a handle assembly mounted on the chassis and comprising a handle adjustably mounted on the chassis; a motor driving assembly mounted on the chassis and comprising a wheel assembly rotatably mounted on the chassis; a combined clutch and brake assembly connected to the wheel assembly; a motor assembly connected to the combined clutch and brake assembly to drive the wheel assembly through the combined clutch and brake assembly; a control unit coupled electrically to the motor assembly and the combined clutch and brake assembly to control the motor assembly and the combined clutch and brake assembly operating; and a battery assembly coupled electrically to the control unit and the motor assembly to provide electricity for the control unit and the motor assembly; a casing assembly mounted on the chassis to cover the chassis; and a wheelchair connecting assembly connected to the framework to connect the motorized apparatus to a wheelchair, wherein the handle assembly comprises a control panel device mounted on the handle and comprising a twist grip rotatably mounted on the handle; a potentiometer connected to the twist grip to transform angular positions of the twist grip into electrical signals transmitted to the control unit; multiple switches coupled electrically to the control unit; and a releasable jack plug connected to the potentiometer and the switches whereby the potentiometer and the switches connect to the control unit through the releasable jack plug.