Patent ID: 8869563

Claim:
A device for marking the inside of a hollow glass item defining a container having an opening, a bottom opposite said opening, and at least one side wall delimited by an outer surface and an inner surface, comprising at least one plunger, comprising: at least one raised or hollow pattern; a support assembly for said at least one plunger that can be moved between a first position in which the plunger is outside the item, and a second position in which the plunger is inside the item; and a radial movement device, in the second position of the support assembly, moving said at least one plunger between a passive position spaced away from the inner surface of the side wall and an active position pressed against said inner surface to imprint said at least one raised or hollow pattern; wherein the support assembly comprises: a stationary bearing portion at the opening of the item on the one hand, and a moving portion that can be moved in an axis of the item and supporting said radial movement device of said at least one plunger on the other hand.