Auto sizing chuck

A chuck for a power tool, the chuck comprising:

• a chuck body extending along a longitudinal axis and defining an attachment end and a tool receiving end, the chuck body including a slot between the attachment end and the tool receiving end;
• a plurality of jaws, each of the jaws including a first engagement portion, a jaw end, and a drive end, each of the jaws movable along a respective jaw axis between a closed position and an open position, each respective jaw axis oriented at an oblique angle relative to the longitudinal axis of the chuck body;
• a biasing member coupled to the jaws and operable to bias the jaws toward the closed position;
• and
• a rotating assembly coupled to the chuck body and rotatable with respect to the chuck body between a disengaged position, an engaged position, and a tightened position, the rotating assembly including a ring positioned within the slot, wherein the ring includes a second engagement portion, the first engagement portion and the second engagement portion being disengaged when the rotating assembly is in the disengaged position, the first engagement portions and the second engagement portion being engaged when the rotating assembly is in the engaged position such that each of the jaws is movable along its respective jaw axis in response to rotation of the rotating assembly, and rotation of the rotating assembly from the engaged position to the tightened position moves the jaws toward the closed position.

A chuck for a power tool, the chuck comprising:

• a chuck body extending along a longitudinal axis and defining an attachment end and a tool receiving end, the chuck body including a slot between the attachment end and the tool receiving end;
• a plurality of jaws, each of the jaws including a jaw end and a drive end, each of the jaws movable along a respective jaw axis between a closed position and an open position, each respective jaw axis oriented at an oblique angle relative to the longitudinal axis of the chuck body;
• a biasing member coupled to each of the jaws and operable to bias the jaws toward the closed position;
• and
• a rotating assembly selectively engageable with the jaws such that, when engaged, the jaws are movable in response to rotation of the rotating assembly,
• wherein the rotating assembly includes a ring positioned within the slot, the ring having a plurality of recesses and a plurality of threaded portions,
• wherein each of the jaws includes threads,
• wherein the rotating assembly is movable to an engaged position in which the threaded portions of the ring are in threaded engagement with the threads of the jaws, and
• wherein the rotating assembly is movable to a disengaged position in which recesses of the ring are aligned with threads of the jaws.