Auto sizing chuck
AssigneeMilwaukee Electric Tool Corporation
InventorsTroy C. Thorson, Jeffrey Holly
Life of this patent
Estimating the term…
Abstract
A chuck includes a chuck body extending along a longitudinal axis, the chuck body including a plurality of slots each arranged at an oblique angle with respect to the longitudinal axis. A plurality of jaws each includes a first engagement portion, a jaw end, and a drive end. Each of the jaws is disposed within one of the plurality of slots and is movable between a close position and an open position. A biasing member is coupled to the plurality of jaws and is operable to bias the plurality of jaws toward the close position and a rotating assembly is selectively engageable with the plurality of jaws such that when engaged, the plurality of jaws are movable in response to rotation of the rotating assembly.
Claims17
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 plurality of slots each arranged at an oblique angle with respect to the longitudinal axis;
- a plurality of jaws each including a first engagement portion, a jaw end, and a drive end, each of the jaws disposed within one of the plurality of slots and movable between a close position and an open position, the plurality of jaws and the chuck body cooperating to radially define a biasing space disposed radially between the drive ends of the jaws and the chuck body;
- a biasing member coupled to the plurality of jaws and operable to bias the plurality of jaws toward the close position, the biasing member including a guide sleeve and a spring disposed radially within the biasing space;
- and
- a cap separate from the chuck body and coupled to the attachment end of the chuck body;
- a rotating assembly selectively engageable with the plurality of jaws such that when engaged, the plurality of jaws are movable in response to rotation of the rotating assembly.
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 plurality of slots each arranged at an oblique angle with respect to the longitudinal axis and a cylindrical guide surface having an outer diameter;
- a cap separate from the chuck body and coupled to the attachment end of the chuck body;
- a plurality of jaws each including a first engagement portion, a jaw end, and a drive end, the drive end defining an inside diameter, each of the jaws disposed within one of the plurality of slots and movable between a close position and an open position;
- a biasing member coupled to the plurality of jaws and operable to bias the plurality of jaws toward the close position, the biasing member including a guide sleeve that movably engages the cylindrical guide surface and a spring, each of the guide sleeve and the spring positioned radially between the outer diameter and the inside diameter;
- and
- a rotating assembly coupled to the chuck body and including a second engagement portion, the rotating assembly rotatable with respect to the chuck body between a disengaged position, an engaged position, and a tightened position, wherein the first engagement portions and the second engagement portion are disengaged when the rotating assembly is in the disengaged position such that the plurality of jaws are movable along the longitudinal axis independent of the rotating assembly and wherein the first engagement portions and the second engagement portion are engaged when the rotating assembly is in the engaged position such that the plurality of jaws are movable along the axis in response to rotation of the rotating assembly, and wherein rotation of the rotating assembly from the engaged position to the tightened position moves the plurality of jaws toward the close position.
Dependencies are inferred from the claim text.