Abstract: A latching mechanism for coupling nestable drive shanks of a tool includes a housing presenting a locking pin movable between a normal locking position and a release position. First and second bias means cooperate to urge a free end of the locking pin in extension outside the housing so as to extend between aligned shank apertures and join the same. Upon user disengagement of one bias means on the locking pin, the locking pin is urged to a release position towards a location within the housing so as to withdraw the pin from the aligned apertures. The latching mechanism enables drive shanks to be connected at user selectable lengths therebetween.

Abstract: A mechanism for engaging a chuck to a chuck body includes a bore within the chuck body having first and second opposed channels in communication therewith. A shaft extending from the chuck is configured for seating in the bore and includes two opposed vanes for seating in the channels. The vanes are depressible allowing for initial bore penetration and seating of the chuck shaft into the bore. Upon seating the vanes are biased into the channels locking the chuck shaft in the bore. A tool provides for depression of the vanes allowing for removal of the seated chuck shaft from the bore. Alternative mechanisms for locking a chuck, chuck body and a driven shaft are disclosed.