Bi-stable pressure maintaining gas containers

Details Bi-stable pressure maintaining gas containers Bi-stable pressure maintaining gas containers

1990-11-07

1992-05-05

Hajec, Donald T.

Dispensing

With discharge assistant

Fluid pressure

222399, 261DIG7, B65D 8300

Patent

active

051100142

ABSTRACT:
The object of this invention is to provide vessels for storing a gas to be used for automatically maintaining a predetermined pressure inside a container carrying a liquid, as it would be a beverage containing bottle. Two embodiments of such vessels are presented: One in shape of a capsule which can be dropped inside a beverage bottle, the other in the form of a cartridge which is attached at the bottom of a container, such as a beverage bottle. Both embodiments turn off gas flow when they sense a pressure equal or lower than atmospheric, or higher than a pressure of a predetermined value.

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patent: 4982879 (1991-01-01), Corrado et al.
patent: 4995533 (1991-02-01), Vandoninck

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