Patent ID: 7521826

Claim:
A power tool comprising: a first housing including a grip portion engageable by a hand of an operator, the housing being supportable by the operator during operation of the power tool; a second housing configured to support a switched reluctance motor operable to drive a tool element to work on a work piece, the switched reluctance motor including a stator assembly comprising a stator defining an opening and including an axis through the opening, a rear bell positioned adjacent to the stator along the axis, the rear bell including a first side, a second side, and an aperture, the first side defining a substantially centralized and stepped recess, the second side defining an annular wall and a hub, and a rotor assembly having a shaft, the rotor assembly including a rotor mounted on the shaft and configured to be received within the opening of the stator, and a magnet hub mounted on the shaft configured to be received within the centralized recess of the first side of the rear bell; and a single modular electronics package including a circuit board configured to fit within the recess, the circuit board having at least one contact arranged to fit through the aperture and adapted to electrically and physically connect to the switched reluctance motor when the first housing is coupled to the second housing, the single modular electronics package being removably coupled to the switched reluctance motor.