System of retention mechanism for a Dispenser to retain a Cap of a Roll of material and interchangeable, replaceable plug of a Roll of material of a Dispenser which comprises at least a retention Mechanism and a rotation, where the retention mechanism includes a Insert Slot,Pin means discriminators provided at least at the receiving end of the insertion Slot, and a Loading Ramp Surface provided with a positioning; Dispenser

摘要

A retention mechanism (40) for a dispenser for retaining an end plug (10) of an exchangeable roll of material includes an insertion slot extending between a receiving end (54) and a seating region (50) for inserting a bearing pin (22) of the end plug. The bearing pin has at least a first portion (26) with a first diameter, and a second portion (28) with a second diameter smaller than the first diameter. A pin discriminator (46) is at least at the receiving end and narrows the receiving end so only bearing pins can enter the receiving slot which have a maximum outer diameter in the second portion which equals the second diameter. A rejecting slot (48) extends from the seating region and is dimensioned so only bearing pins with a predetermined maximum diameter in the first portion which is smaller than the first diameter will enter the rejecting slot.