Patent ID: 8667875

Claim:
A power tool assembly, comprising: a housing defining a housing opening; an anvil rotatably supported in said housing, said anvil including a drive portion extending through said housing opening, said drive portion including a transition portion and an accessory receiving end portion, the transition portion being wider than the accessory receiving end portion, the accessory receiving end portion extending from the transition portion and having an interior sidewall structure and an interior end wall that collectively defines a detent bore; a detent positioned in said detent bore and movable between a retracted position and an extended position; and a biasing member positioned in said detent bore between said detent and said interior end wall and configured to urge said detent toward said extended position; wherein said detent includes an upper detent portion having (i) a trailing abutment surface, (ii) a trailing top surface portion, and (iii) a leading top surface portion; wherein, when said detent is positioned in said extended position, (i) said trailing abutment surface and said trailing top surface portion are located outside of said detent bore, and (ii) said leading top surface portion is located within said detent bore; wherein, when said detent is positioned in said retracted position, (i) said trailing abutment surface is located within said detent bore, and (ii) said leading top surface portion is located within said detent bore; wherein the detent in is configured to be received in an actuator passage defined by an interior wall of a socket installed on the accessory receiving end portion; wherein the detent pin is configured to be contacted by and compressed into the detent bore by the interior wall of the actuator passage in response to an axial load on the socket; and wherein the detent bore and the transition portion are positioned with respect to each other such that the transition portion provides an axial stop for the socket when the detent pin is compressed into detent bore by the interior wall of the actuator passage.