A locking chuck

摘要

A driver 26 includes a housing 28, a driveshaft 30 rotatable with respect to the housing and a chuck 10. The chuck includes a generally cylindrical body 14 and a nut 12 rotatably mounted relative to the body so that relative rotation between the nut and the body moves the chuck toward an open or closed position. A first sleeve 54 is rotationally fixed to the nut and is axially movable and rotatable with respect to the body. A collar 64 is disposed operatively between the first sleeve and the body 14. The collar 64 is rotationally fixed to and axially movable with respect to the body 14 and is axially fixed to and rotatable with respect to the first sleeve 54 so that the collar 64 moves axially with the first sleeve and with respect to the body between a first axial position Fig.1 and a second axial position (Fig 2). The collar is rotatable with respect to the housing 28 in the first position Fig 1 and is rotationally fixed to the housing in the second position (Fig 2).