Patent ID: 7493696

Claim:
A bush cutting machine comprising: a main body; a driven shaft rotatably supported in the main body and having two opposite ends; a cutter member operatively connected to one end of the driven shaft; a power source selectively composed of an engine or an electric motor, having an output shaft; joint means for detachably and selectively connecting the main body and the power source, wherein said joint means provides for selectable user interchange amongst the engine and the electric motor depending on an intended use environment; a centrifugal clutch having a clutch drum operatively connected to the other end of the driven shaft and a clutch shoe operatively connected to the output shaft of the power source; wherein, when the power source is coupled to the main body by the joint means, the clutch drum and the clutch shoe are combined, for each of the engine and the electric motor usages, to form the centrifugal clutch for the transmission of a drive power generated by the power source to the cutter member through the drive shaft, and a transmission pathway of the drive power is drivingly disengaged between the clutch drum and the clutch shoe upon release of said joint means and detachment of the main body and the power source.