Patent ID: 8550569

Claim:
A shank chisel for mounting in a chisel receptacle, comprising: a chisel head ( 10 ): a chisel shank ( 20 ) connected to the chisel head ( 10 ), the chisel shank having a first diameter (D 1 ); a shank extension ( 20 . 1 ) at an end of the chisel shank ( 20 ) remote from the chisel head ( 10 ), the shank extension ( 20 . 1 ) including an end section ( 29 ) and a tool fitting ( 26 ) disposed between the end section ( 29 ) and the chisel shank ( 20 ); and the end section ( 29 ) having a second diameter (d 1 ) that is smaller than the first diameter (D 1 ) to form a gap region, wherein the tool fitting ( 26 ) is accessible in the chisel receptacle by a tool in the axial direction of the shank chisel by the gap region formed by the end section ( 29 ) being set back from a circumference surface of the chisel shank ( 20 ), wherein the tool comprises an actuating element with a tool extension adapted to fit within the tool fitting ( 26 ), and a shoulder adapted to contact an end surface of the end section ( 29 ) when the tool extension is within the tool fitting.