Patent ID: 7784875

Claim:
A base element ( 10 ) for a chisel holder system wherein the base element ( 10 ) has a plug-in receptacle ( 14 ) into which the chisel holder ( 20 ) is insertable with a plug-in neck ( 21 ), the base element ( 10 ) has a support surface ( 12 ), the base element ( 10 ) has shoulder ( 13 ) adjoining the support surface ( 12 ) and a seating-adjustment space is formed above the shoulder ( 13 ), the base element ( 10 ) comprising: in a transition area to the shoulder ( 13 ), the support surface ( 12 ) offset from the shoulder ( 13 ) by a depression ( 15 ) in a shape of a groove extending from each of opposite sides of the plug-in receptacle ( 14 ) which forms an offset extending in a vertical direction with respect to the support surface ( 12 ) so that the flat connection between the support surface ( 12 ) and the shoulder ( 13 ) is interrupted in the area of the depression ( 15 ).