Patent ID: 8616561
Filing Date: 2013-12-31
Classification: B23B,Y10S,Y10T

Abstract:
1. A chuck for use with a manual or powered driver having a rotatable drive shaft, the chuck comprising: a generally cylindrical body having a nose section, a tail section and a center axis, the tail section being configured to rotate with the drive shaft and the nose section having an axial bore formed therein and a plurality of passageways formed therethrough and intersecting the axial bore; a plurality of jaws movably disposed in the passageways; a nut rotatably mounted about the body and in operative communication with the jaws so that rotation of the nut in a closing direction with respect to the body moves the jaws toward the center axis of the body and rotation of the nut in an opening direction with respect to the body moves the jaws away from the center axis of the body; a generally cylindrical sleeve rotatably mounted about the body, the sleeve being in operative communication with the nut so that the sleeve rotationally drives the nut but is rotatable with respect to the nut between a first rotational position and a second rotational position; an annular array of locking teeth non-rotatably fixed to the body and facing toward the tail section of the body; and a lock ring comprising an annular portion and at least one projection extending from the annular portion toward the nose section of the body and the locking teeth, the lock ring being non-rotatable with respect to the nut and axially movable with respect to the body, the at least one projection and the locking teeth being configured so that when the at least one projection engages the locking teeth, the at least one projection and the locking teeth resist rotation of the lock ring in the opening direction with respect to the body, wherein the at least one projection is disengaged from the locking teeth when the sleeve is in the first rotational position and the at least one projection engages the locking teeth when the sleeve is in the second rotational position.