Special receptacle or package – Combined or convertible
Patent
1997-11-18
1999-09-07
Sewell, Paul T.
Special receptacle or package
Combined or convertible
206 635, 220797, 53471, B65D 600
Patent
active
059472782
ABSTRACT:
A thermoformed dual-compartment flexible package and method for storing and dispensing the components of a polymerizable system such as the base and catalyst portions of an addition cured dental impression material. Mutually reactive constituents are isolated during storage. A first embodiment of the package includes two thermoplastic cups each having an open mouth circumscribed by an annular groove, separated by a slotted aperture. The package further includes a thermoformed flexible closure having a central projection between two annular projections. Two seals are formed by engaging the annular projections within the grooves. A second embodiment includes two thermoplastic cups separated by a slotted aperture, with each cup having an open mouth from whose rim depends an outwardly canted wall terminating at a recessed lip. The package further includes a thermoformed flexible closure having a central projection between two annular, concavely arcuate projections each having an outwardly flared rim terminating in a beveled edge. Two seals are formed by pressing each arcuate projection into a cup rim so that its flared rim contacts the canted wall and the edge contacts the lip.
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Hussey Lance
Sawhney Ravi K.
Bui Luan K.
Discus Dental Impressions, Inc.
Sewell Paul T.
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