RETENTION MECHANISM IN A DISPENSER AND SYSTEM COMPRISING A RETENTION MECHANISM AND AN END PLUG

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 {10}. The bearing pin (22) 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 (54) and narrows the receiving end (54) so only bearing pins (22) can enter the receiving slot which have a maximum outer diameter in the second portion (28) which equals the second diameter. A rejecting slot (48) extends from the seating region (50) and is dimensioned so only bearing pins (22) with a predetermined maximum diameter in the first portion which is smaller than the first diameter will enter the rejecting slot (48).