Closing ring

Abstract

The subject of the application is a closing ring that comprises an open expansion ring (1) with a handle (3) located on its outer surface and two locking projections (4) located on its inner surface, each of which is cut on two of its sides at the same angle and has a rear wall and a front wall. The expansion ring (1) is C-shaped, with one of its arms (2) being longer than the other of its arms (2). The first locking projection (4a) is on the first arm (2a), and the second locking projection (4b) is on the second arm (2b), and furthermore the handle (3) is on one of the arms (2).