Patent ID: 8061645

Claim:
In apparatus for dispensing wiping material, the combination of an end piece for a roll of wiping material and a support guide for receiving the end piece and mounting the roll in the apparatus, the end piece comprising: a cylindrical bearing surface tightly fitted into a core that supports the roll, with a transverse flange that protrudes from the cylindrical bearing surface and rests against an opposite-facing surface of the core and the roll, and an axially extending neck that has a head and a hollowed-out reduced diameter section forming a guide groove, said hollowed-out section being located between the head and the cylindrical bearing surface, the support guide comprising a slot for insertion of the end piece into the guide, a protruding portion defining an opening that corresponds to and receives the hollowed-out section of the end piece with the head being situated on an opposite side of the protruding portion than the cylindrical bearing surface, and means for preventing extraction of the end piece along the slot, wherein the head and part of the hollowed-out section are deformable and internally provided with a hole that creates deliberate fragility to deform the head and the part by crushing when the head is displaced through the opening, the crushing forcing walls of the head to permanently move toward each other without breaking as the core and the end piece are extracted from the guide, and wherein said head is, in its final state after the core and end piece have been extracted, irreversibly deformed and not reusable in the support guide.