Patent ID: 9131991
Filing Date: 2015-09-15
Classification: A61C

Abstract:
1. A dispensing device for a dental material, comprising: a cartridge for containing the dental material, the cartridge having an outlet nozzle with an outer surface and an inner surface, the inner surface forming a passageway for the dental material; and a closure, not being formed from the dental material, having a cap and a pin, the cap having a front wall from which a circumferential side wall extends, the circumferential side wall having an inner surface defining a conical passageway that generally corresponds to a negative shape of an outer surface of the outlet nozzle, and where the pin protrudes generally in the same direction as the side wall from the front wall over generally the same length, the closure forming a seal only between the outer surface of the cartridge and the circumferential side wall of the closure and the pin extending into the passageway of the cartridge with a loose fit to allow the closure to move relative to the outlet nozzle under pressure from the dental material dispensed from the cartridge.