Slotted plunger

Details Slotted plunger Slotted plunger

2006-10-31

2006-10-31

Jacyna, J. Casimer (Department: 3751)

Dispensing

With discharge assistant

Insertable cartridge or removable container

C222S386000, C433S090000, C604S218000

Reexamination Certificate

active

07128246

ABSTRACT:
The invention relates to a receptacle with a plunger, which is displaceably arranged therein. The plunger comprises a plunger body with a flat face, whereby at least two encircling sealing lips are shaped onto the plunger body. Each sealing lip has slot-shaped notches at at least one location that, as soon as the plunger is inserted into the receptacle, permit a gas exchange between the inside of the receptacle and the outside atmosphere. The invention also relates to the use of the receptacle and of the plunger for storing and discharging, in particular, dental materials.

REFERENCES:
patent: 5322440 (1994-06-01), Steele
patent: 5360146 (1994-11-01), Ikushima
patent: 5624260 (1997-04-01), Wilcox et al.
patent: 5865803 (1999-02-01), Major
patent: 5893714 (1999-04-01), Arnold et al.
patent: 3915268 (1990-12-01), None
patent: 1475430 (1977-06-01), None

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