Patent ID: 7887320

Claim:
An auxiliary device, comprising a gripper which includes a plurality of nipples, each nipple having a support tube and an insertion part which defines an axis and includes a press ring for insertion into a sleeve-shaped part in the form of cooling sleeve; two holding shoulders respectively disposed in a direction of the axis ; and at least one support ring to hold the press ring, the at least one support ring having an inner diameter that is larger than an outer diameter of the support tube so as to floatingly support the press ring in a non-activated state with respect to an axis of the nipple; wherein each nipple has two tube pieces, with one of the two holding shoulders being attached to an end of one tube piece, and the other one of the two holding shoulders being attached to an end of the other tube piece; and wherein the press ring is mechanically bulged in a manner analogous to a thermos bottle cap.