Bottles and jars – Closures – Self-sealing – piercable-type closure
Patent
1992-08-21
1994-05-24
Shoap, Allan N.
Bottles and jars
Closures
Self-sealing, piercable-type closure
215251, 215258, 215263, 215274, 215307, 215321, 215350, B65D 4158
Patent
active
053140842
ABSTRACT:
A closure device for use with a container having an open neck finish, including an inner cap having a skirt terminating in an open end which engages the outside diameter of the finish. The inner cap is sized to initially engage the finish. The skirt has circumferentially spaced slits extending, which may function as lyophilization ports, which permit the inner cap to expand upon an axial closing force and engage the bottom of the finish. A liner is positioned in the inner cap proximate the closed end and is compressed against the finish when the cap is moved to alignment with the bottom of the finish. An outer cap is locked on to the inner cap in pre-assembly which then encloses the inner cap after complete assembly to seal and compress the liner between the finish and the inside face of the inner cap. In a preferred embodiment, an inwardly facing ridge is located on the inside of the inner cap to engage the liner by a distance sufficient to permit the liner to seal to the finish over the maximum variation of dimensions for the liner and for the crown on the finish.
REFERENCES:
patent: 3888377 (1975-06-01), Stadler
patent: 4251003 (1981-02-01), Bodenmann
patent: 4429803 (1984-02-01), Butterfield
patent: 4534482 (1985-08-01), Bouche
patent: 5085332 (1992-02-01), Gettig et al.
patent: 5088612 (1992-02-01), Storar et al.
patent: 5143236 (1992-09-01), Gueret
patent: 5165560 (1992-11-01), Ennis, III et al.
Anes John M.
Brown Homer J.
Folta Christopher M.
Cronin Stephen
Renz Jr. Eugene E.
Shoap Allan N.
The West Company Incorporated
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