Patent ID: 7828630

Claim:
A power tool comprising: a tool head having a connection structure and an input member that extends through the connection structure; a tool body having a housing and a motor, the motor being housed in the housing and including an output member, the housing defining an opening that is configured to receive the connection structure, the tool head being inserted into the opening along an insertion axis to removably attach the tool head to the tool body and couple the input member to the output member; at least one guide rail intersecting the connection structure, each guide rail being generally parallel to the insertion axis when the tool head is attached to the tool body; and at least one guide slot coupled to the opening, each guide slot being generally parallel to the insertion axis when the tool head is attached to the tool body and configured to receive an associated guide rail to thereby resist relative rotation between the tool head and the tool body; wherein the connection structure includes a projection that extends rearwardly from an end wall that is configured to abut the tool body, the projection being sized to engage the opening to thereby align the tool head to the tool body.