Patent ID: 7108090

Claim:
A motorized cart comprises: a cart body; and a hub gear motor system; said cart body includes a support frame, a steering unit, a plurality of wheels, a seat and a platform; said plurality of wheels is attached to said support frame and includes at least one rear wheel and at least one front wheel; a plurality of antitip casters generally aligned with said front wheel, wherein one of said antitip casters is positioned on one side of said front wheel and another of said anti-tip casters is positioned on another side of said front wheel; said front wheel comprises a rim, a tire, a hub casing and two threaded rods, said hub casing is mounted to opposite sides of the rim and said threaded rods define a horizontal rotational axis of the front wheel comprising a first rotational axis; said steering unit comprises a steering column; said hub gear motor system drives the front wheel in forward and rearward directions and includes an electric reversible motor with a rotor and an intermediate plate; said electric reversible motor of the hub gear motor system further comprises first, second, third and fourth gears, wherein said electric reversible motor of the hub gear motor system is contained within said hub casing of the front wheel; the first gear is engaged with the rotor of the electric reversible motor; the first gear further is engaged with the second gear; the second gear is fixedly attached to the third gear; the second and third gears are disposed on opposite sides of the intermediate plate; the intermediate plate is attached to the motor; the second and third gears rotate about a second rotational axis which is offset from the first rotational axis; the fourth gear is fixed to the hub casing and rotates about the first rotational axis; and the hub casing is nonrotatably attached to the rim; wherein said gears translate rotational motion of the electric reversible motor to the at least one front wheel, said first gear is driven by the electric reversible motor, the second gear is driven by said first gear, the third gear rotates with said second gear, said fourth gear is driven by said third gear, said hub casing is rotated by said fourth gear; a 12-volt battery and a battery charger, wherein said battery provides power to the electric reversible motor; a control box, a power width modulator controller and a plurality of leads; wherein said control box is mounted on the steering unit and controls the speed and direction of the electric reversible motor; said power width modulator controller regulates voltage directed to the motor via the throttle; said plurality of leads comprises power leads, control leads and motor leads, wherein said power leads extend between the battery, the battery charger and the power width modulator controller; said control leads extend between said control box and said power width modulator controller; and said motor leads extend between said electric reversible motor and said power width modulator controller.