Bottles and jars – Closures – Combined or convertible
Patent
1987-03-24
1988-08-16
Norton, Donald F.
Bottles and jars
Closures
Combined or convertible
53 88, 417437, 417554, B65D 5124
Patent
active
047638028
ABSTRACT:
Carbonated beverages in bottles lose their carbonation and become flat once the bottle is opened. In this invention carbonation is preserved and maintained in a simple, inexpensive manner by re-introducing pressure into a bottle which has been opened. A small pump consisting of a cylinder, piston and threaded cap is attached to the top of an opened bottle. This hand operated pump re-introduces pressure to the bottle in the form of compressed air and thus maintains the concentration of carbon dioxide in the liquid regardless of the amount of liquid remaining in the bottle. The pump introduces an air pressure of fifty to sixty pounds per square inch to the bottle which is equivalent to the air pressure found in unopened carbonated beverage bottles at 21 degrees celsius.
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patent: 4372096 (1983-02-01), Baum
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patent: 4640426 (1987-02-01), Wasley
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