Patent ID: 7040630

Claim:
A chuck for use with a manual or powered driver having a rotatable drive shaft and an elongated tool shaft having a polygonal cross section and defining a circumferential groove, said chuck comprising: a. a generally cylindrical body having a nose section and a tail section, said tail section being rotatable with said drive shaft of said driver and said nose section having a central bore formed therein; b. a grip mounted in said body in communication with said axial bore; and c. a first detent located in said grip and extending radially into said bore, said first detent being releasable in a radially outward direction relative to said grip; wherein, upon movement of said grip to a predetermined position, the tool shaft may be inserted so that said grip engages the polygonal surfaces of the tool to rotationally retain the tool, and wherein said detent releasably engages the groove formed in the tool shank.