Bottles and jars – Closures – Combined or convertible
Patent
1988-06-29
1989-06-13
Norton, Donald F.
Bottles and jars
Closures
Combined or convertible
206525, 206601, 426118, 426124, B65D 8572
Patent
active
048384429
ABSTRACT:
A product preserving stopper (2) is used to seal the opening (62) in a container (28) and remove oxygen within the container. This accomplished by incorporating a metal-air primary cell (32) into the construction of the stopper. The cathode of the cell is open to the interior (26) of the container so that by electrically connecting the anode and cathode, typically by shorting out the anode can (36) to the cathode can (34) using a resilient contact (40), any oxygen in the container is removed through the action of the metal-air primary cell. Electrical connection between the contact and cell is initially prevented by placement of a removable separator tab (48) between the contact and the anode can. The stopper becomes actuated only after removal of the separator tab by the user to lengthen the shelf life of the cell. Preferably the stopper is packaged within an oxygen impermeable package (70) to further increase the shelf life.
REFERENCES:
patent: 1584903 (1926-05-01), Supplee
patent: 2915404 (1959-12-01), Tessmer
patent: 3220555 (1965-11-01), Silha
patent: 3305730 (1962-05-01), Walker
patent: 4055672 (1977-10-01), Hirsch et al.
patent: 4279350 (1981-07-01), King
patent: 4279995 (1981-09-01), Moriya
patent: 4350508 (1982-09-01), Santoro et al.
patent: 4421235 (1983-12-01), Moriya
patent: 4545492 (1985-10-01), Firestone
Kirk-Othmer, Encyclopedia of Chemical Technology, 3rd Ed., vol. 3, pp. 532-534.
Matsi, Inc.
Norton Donald F.
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