Patent ID: 6616149
Filing Date: 2003-09-09
Classification: B23B,Y10S,Y10T

Abstract:
A chuck for a rotary power tool comprising:a barrel having a proximal end, a distal end opposite the proximal end, and an axial bore extending at least partially therethrough to receive a tool bit from the distal end, the proximal end of the barrel adapted to mount to a shaft of the power tool; a movable sleeve concentrically around the barrel, the sleeve being slidably movable relative to the barrel in an axial direction between an extended position and a retracted position; a locking member actuatable by axial movement of the sleeve to selectively secure and release the tool bit with respect to the axial bore, thereby facilitating selective insertion and removal of the tool bit; and a collar fixed to the barrel, the collar including a central flange disposed around the proximal end of the barrel, a generally planar web extending radially outwardly from the central flange and a outer guide flange extending from an outer periphery of the web in a distal direction; wherein the movable sleeve is guided along an interior side of the outer guide flange when the moveable sleeve moves between the extended and retracted positions.