Patent ID: 8777232
Filing Date: 2014-07-15
Classification: B23B,Y10S,Y10T

Abstract:
1. A drill chuck for use with a powered driver, comprising: a spindle portion including a pusher bore on a first end, a spindle bore on a second end, an annular array of teeth disposed about its outer surface, and an annular groove defined by the outer surface of the first end; a body rotatably disposed about the spindle portion, the body including a central bore for receiving the spindle portion, an annular groove defined by an inner surface of the central bore adjacent a first end of the body, and a pawl including an engagement end, the pawl being pivotably mounted to a second end of the body, the pawl being configured to selectively engage the annular array of teeth on the spindle portion; a spring disposed on the body, the spring biasing the engagement end of the pawl radially inwardly and extending along substantially an entire circumference of the body; a jaw pusher including a threaded post and a head, the threaded post being disposed in the pusher bore and configured for axial motion relative to the spindle portion; a jaw guide disposed on the first end of the body, the jaw guide including a plurality of jaw slots formed therein; a plurality of jaws, each jaw being slidably received in a corresponding jaw slot and slidably received by the head of the jaw pusher; and a plurality of bearing balls received between the annular groove of the spindle portion and the annular groove of the body, wherein the annular groove of the spindle portion and the annular groove of the body are both continuous, thereby forming a continuous pair of bearing races for the plurality of bearing balls.