Patent ID: 7739932

Claim:
A tool-holding device for an insert tool ( 14 ) equipped with an essentially disk-shaped hub ( 42 ), in particular for a hand-guided angle grinder ( 32 ) or a hand-guided circular saw, having a drive device ( 12 ) that includes a leaf spring unit ( 58 ) and is able to clamp the insert tool ( 14 ) in the axial direction ( 64 ), wherein the leaf spring unit ( 58 ) has at least one freely extending spring piece ( 110 ) that extends at least partially in the circumference direction ( 50 , 52 ) and wherein the leaf spring unit ( 58 ) has at least one encoding means ( 128 ) that corresponds to at least one component ( 20 , 56 ) of the drive device ( 12 ) during installation in order to prevent an incorrect installation of the leaf spring unit ( 58 ).