Abstract: A tool of the type having a drive stud for receiving and releasing a tool attachment includes an opening in the drive stud and a locking pin movably mounted in the opening. The opening defines upper and lower ends, and the lower end of the opening is located at a portion of the drive stud constructed for insertion into the tool attachment. The lower end of the locking member is constructed to engage the tool attachment when the locking member is positioned in an engaging position and to release the tool attachment when the locking member is moved to a release position. An actuating member is movably positioned on the drive stud, and the actuating member defines a sliding surface oriented transversely to the locking member to engage a ledge surface of the locking member. Movement of the actuating member along the longitudinal axis of the drive stud in a selected direction causes the ledge surface to slide along the sliding surface to move the locking member from the engaging to the release positions.

Abstract: A tool of the type having a drive stud for receiving and releasing a tool attachment includes an opening in the drive stud and a locking pin movably mounted in the opening. The opening defines upper and lower ends, and the lower end of the opening is located at a portion of the drive stud constructed for insertion into the tool attachment. The lower end of the locking member is constructed to engage the tool attachment when the locking member is positioned in an engaging position and to release the tool attachment when the locking member is moved to a release position. An actuating member is movably positioned on the drive stud, and a flexible tension member is secured between the actuating member and the locking pin and extends through the upper end of the opening such that movement of the actuating member causes the locking pin to move from the engaging to the release positions.

Abstract: A quick-release and positive locking mechanism adapted for use on tools for receiving removable sockets, and particularly adapted for use on extension bars of the type frequently employed with socket wrenches. One form of the mechanism comprises a drive stud having a diagonally disposed bore or opening extending therethrough and having a movable member mounted in said bore with its lower end adapted to extend beyond the contour of the bar and into a recess in the socket or like attachment to hold the same when in one position and to be withdrawn from said recess to release the socket or like attachment in another position and with its upper end extending beyond the contour of the drive stud above said socket or like attachment for access for manual movement.

Abstract: A quick-release and positive locking mechanism, adaptable for use on tools for receiving removable tool sockets, particularly adaptable for use on socket wrenches or power or impact tools. A tool for receiving a removable tool attachment is disclosed, having a drive stud for receiving a removable tool attachment, a first means for normally engaging said tool attachment, a second means for normally selectively releasing said tool attachment, and a third means for positively locking said tool attachment to the drive stud.