Patent ID: 7258299

Claim:
A reel for winding or unwinding reelable, strip-shaped objects comprising: a support surface that extends in the main as a cylinder; a hub arranged to rotate about an axis in order to allow rotation of the support surface about said axis; an adjusting device arranged to cooperate with the support surface in order thereby to vary the diameter of the support surface, wherein the support surface is arranged at a flexible element consisting essentially of a continuous circumferential piece and that the adjusting device is arranged to affect said support surface to alter its shape, whereby the diameter of the support surface is varied; and at least one support ring provided with an opening, which support ring is arranged internally of the support surface, where the support ring at least partially bears against an internal surface of the flexible element, the support ring comprises at least one elongated shank and the hub, wherein the support ring is arranged to run in a groove on the inside of the flexible element, where the groove is arranged in a plane that is essentially parallel to the direction of rotation of the reel.