Patent ID: 7423407

Claim:
A system of cordless tools comprising: a cordless power tool having a housing with a motor housing portion, a handle and a battery connection portion, the handle having a first end, which is coupled to the motor housing portion, and a second end that is coupled to the battery connection portion, the handle being disposed between the motor housing portion and the battery connection portion, the battery connection portion being spaced apart from the motor housing portion and having a pair of tool guide grooves, a pair of tool guide rails, and a plurality of tool terminals; and a battery pack having a battery housing, a battery that is received in the battery housing and a plurality of battery terminals that are electrically coupled to the battery, the battery housing including a pair of battery guide rails, a pair of battery guide grooves, and a pair of flat portions that are disposed laterally outwardly of the battery guide rails and generally parallel to the battery guide rails; wherein the battery pack engages the battery connection portion such that the battery guide rails are received in the tool guide grooves and the tool guide rails are received in the battery guide grooves; wherein one of the tool terminals and the battery terminals is a male blade terminal and the other one of the tool terminals and the battery terminals is a female terminal that receives an associated one of the male blade terminals when the battery pack is fixedly but releasably coupled to the battery connection portion; and wherein flat portions of the battery housing abut a surface of the battery connection portion to grossly align the battery pack and the battery connection portion.