Patent ID: 7325811

Claim:
A chuck ( 2 ) for a hand-held power tool ( 4 ) having a motor-driven spindle ( 6 ) with which the chuck ( 2 ) is connected for joint rotation therewith, the chuck ( 2 ) comprising: locking means for securing a shaft section ( 8 ) of an exchangeable working tool having a circular cross-section without a possibility of axial displacement and rotation relative to the chuck ( 2 ), the locking means having a clamping element ( 12 ; 34 ) for securing the shaft section ( 8 ), and an element ( 18 ) for transmitting rotation to the shaft section ( 8 ) and separated from the clamping element ( 12 ; 34 ); and a rotary bearing ( 20 ) for rotationally separating the clamping element ( 12 ; 34 ) and the rotation transmitting element ( 18 ), wherein the clamping element ( 12 ; 34 ) comprises an elastic clamping member having a through-opening ( 24 ; 37 ) for receiving the shaft section ( 8 ) and having, in an unloaded condition of the clamping element, a diameter smaller than a diameter of the shaft section ( 8 ), wherein the clamping member is formed as a disc spring ( 22 ), and the clamping element ( 12 ) comprises a release member ( 26 ) for displacing the disc spring ( 22 ) in a release position thereof.