Chuck with gripping mechanism stop

A chuck for use with a manual or powered driver having a drive shaft, said chuck comprising:

• a generally cylindrical body, said body having a forward section and a rearward section, said rearward section adapted to mate with said drive shaft of said driver and said forward section having an axial bore formed therein and a plurality of angularly disposed passageways formed therethrough and intersecting said axial bore in said forward section;
• a plurality of jaws, a said jaw being positioned slidably in each of said angularly disposed passageways with respect to the passageway axis and so that said passageways inhibit movement of said jaws with respect to said body about the axis of said body, each of said jaws having a jaw face formed on one side thereof and threads formed on the opposite side thereof;
• an annular nut disposed about said body and having a threaded portion in threaded engagement with said jaw threads so that rotation of said nut about said body in a closed position actuates said jaws to a closed position in which said jaws axially and rotationally retain a tool with respect to said body and rotation of said nut in an opening direction, opposite said closing direction, actuates said jaws to an open position in which said jaws do not so retain a tool;
• and
• a generally cylindrical sleeve being received over said body so that said sleeve is rotatable relative to said body, said sleeve being in operative communication with said nut so that rotation of said sleeve rotates said nut,
• wherein said nut includes at least one rotational stop which, when said jaws reach a predetermined position while being actuated by rotation of said nut in said opening direction, abuts a said jaw in a rotational direction with respect to said body axis to oppose further rotation of said nut in said opening direction.

A chuck for use with a manual or powered driver having a drive shaft, said chuck comprising:

• a generally cylindrical body, said body having a forward section and a rearward section, said rearward section adapted to mate with said drive shaft of said driver and said forward section having an axial bore formed therein and a plurality of angularly disposed passageways formed therethrough and intersecting said axial bore in said forward section;
• a plurality of jaws, a said jaw being positioned slidably in each of said angularly disposed passageways with respect to the passageway axis and so that said passageways inhibit movement of said jaws with respect to said body about the axis of said body, each of said jaws having
• a jaw face formed on one side thereof and threads formed on the opposite side thereof, and
• a shoulder forward of said jaw threads with respect to said body when said jaw is operatively disposed in its respective said passageway,
• said shoulder extending radially outward of said jaw threaded portion with respect to the axis of said respective passageway;
• an annular nut disposed about said body and having a threaded portion in threaded engagement with said jaw threads so that rotation of said nut about said body in a closed position actuates said jaws to a closed position in which said jaws axially and rotationally retain a tool with respect to said body and rotation of said nut in an opening direction, opposite said closing direction, actuates said jaws to an open position in which said jaws do not so retain a tool;
• and
• a generally cylindrical sleeve being received over said body so that said sleeve is rotatable relative to said body, said sleeve being in operative communication with said nut so that rotation of said sleeve rotates said nut,
• wherein said nut includes at least one rotational stop having a stop face extending axially forward of said nut threaded portion with respect to said body and disposed radially outward of said jaw threaded portion, and radially inward of the outwardmost extent of said jaw shoulder, with respect to said passageway axis so that when said nut is rotated in said opening direction a rotationally leading edge of a said jaw shoulder abuts said stop face when said jaws reach said predetermined position.