US Patent 7493696 Bush cutting machine

A bush cutting machine comprises a main body, a driven shaft rotatably supported in the main body and having two opposite ends, a cutter member operatively provided to one end of the main body, a power source operatively connected to the other end of the main body for generating a drive power to be transmitted to the cutter member through the driven shaft, and joint member for detachably and selectively connecting the main body and the power source. The power source is selective from an engine and an electric motor.