Patent ID: 7121774

Claim:
A clamping device comprising: a hexagon receptacle adapted to receive hexagon bits inserted in an axial direction of the hexagon receptacle; a radially movable locking element adapted to engage a locking recess of a hexagon bit inserted into the hexagon receptacle; wherein the locking element has a rest position and projects in the rest position radially inwardly into the hexagon receptacle; a locking sleeve surrounding the hexagon receptacle in an initial position and having a cylindrical securing wall; wherein the securing wall radially secures the locking element in the rest position; wherein the locking element is moveable within the hexagon receptacle in the axial direction into a receiving position, wherein radial deflection of the locking element is enabled in the receiving position; a first pressure spring, wherein the locking element is axially moveable against a force of the first pressure spring; and a second pressure spring, wherein the locking sleeve is moveable from the initial position in the axial direction toward a receiving end of the hexagon receptacle against the force of the second pressure spring.