Patent ID: 8567228

Claim:
A stamp adapter for a tool system comprising: a mounting device for accommodating the stamp adapter in a stamp shaft, where a first central axis extends through the mounting device; and a stamp receptacle having a first opening, the first opening comprising a second central axis extending parallel to and separate from the first central axis, a first through-hole through which the second central axis extends, and a first counterbore, wherein the first counterbore is not rotationally symmetrical with respect to the second central axis or the first counterbore comprises at least one recess that is not rotationally symmetrical with respect to the second central axis, and wherein the first counterbore comprises (1) a first sector having a circular inner circumferential face with respect to the second central axis, and (2) a second sector, wherein an inner face of the second sector is parallel to a tangent of the through-hole, and a distance between the inner face of the second sector and the second central axis is bigger than a radius of the first through-hole and smaller than a radius of the first sector of the first counterbore.