Patent ID: 8033307

Claim:
A power tool comprising: a base unit including (i) a receptacle structure defining an interior space configured to receive a motor unit therein, (ii) a handle fixed in relation to the receptacle structure and spaced apart from the interior space, and (iii) a first electrical connector attached to the receptacle structure so as to be located within the interior space; a motor unit including a motor housing having an exterior surface, an electric motor located within the motor housing, and a second electrical connector secured to the motor housing, wherein the motor unit is positionable between (i) a first position in which the motor housing is located in the interior space so that the first electrical connector is positioned in contact with the second electrical connector, and (ii) a second position in which the motor housing is spaced apart from the interior space so that the first electrical connector is spaced apart from the second electrical connector; and a switch supported by the base unit, wherein electric power is delivered to the electric motor when the switch is in an on position and wherein electric power is prevented from being delivered to the electric motor when the switch is in an off position.