Patent ID: 7997587

Claim:
A chuck for rotatably securing a tool with a shank to a manual or powered driver having a drive shaft, said chuck comprising: a. a generally cylindrical body having a nose section and a tail section, said tail section being configured to receive the drive shaft of the driver and said nose section having an axial bore formed therein; b. a plurality of jaws movably disposed with respect to said body in communication with said axial bore; c. a nut rotatably mounted about said body and in driving engagement with said jaws so that rotation of said nut in a closing direction moves said jaws toward an axis of said axial bore and rotation of said nut in an opening direction moves said jaws away from said axis; d. a generally cylindrical outer sleeve non-rotatably fixed to said nut; e. a shield cap rotatably secured about said nose section of said body and extending axially rearwardly over a front portion of said outer sleeve; f. a first ring; and g. a second ring that rotates relative to said nut over a limited arc, wherein one of said first ring and said second ring defines a ratchet and the other of said first ring and said second ring defines at least one deflectable tab that is biased toward and engages said ratchet.