Patent ID: 6863141

Claim:
A kit of components to adapt a manual powered wheel based unit to a dual mode unit having a manual mode of operation and a motor assisted mode of operation, comprising a motorized wheel for a vehicle comprising a hub portion, a drum supporting a rim and tire for rotation relative to the hub portion, the drum and hub having a common axis, the hub itself being rotatable about the common axis, a shaft by which the hub portion is mounted for pivotal motion on its axis relative to a frame of the vehicle, and a bracket mounted on the hub portion or shaft spaced from the axis, the bracket being disposed to engage a frame member of the vehicle to limit pivotal motion of the hub relative to the frame of the vehicle, the engagement being through a torque sensing device, for sensing the torque applied on the bracket which generates signals indicative of the direction and magnitude of reaction forces between the bracket and the frame, a motor mounted on the hub portion and in driving connection with the drum, and a control device for the motor receiving the signals and applying feedback control to the motor according to the torque reaction developed between the wheel and the frame, including a clutch in driving connection between the drum and the hub portion.