Volumetric displacement dispenser

Details Volumetric displacement dispenser Volumetric displacement dispenser

2007-01-30

2008-07-08

Jacyna, J. Casimer (Department: 3754)

Dispensing

With discharge assistant

Container with follower

C222S387000, C222S400700, C222S478000, C222S001000, C215S231000, C215S269000, C215S307000

Reexamination Certificate

active

07395949

ABSTRACT:
A volumetric displacement dispenser and method of using the dispenser is disclosed for dispensing liquid contents from an interior of a bottle with a bottle neck while preventing air from filling a void created within the interior of the bottle caused by the liquid contents being poured out of the bottle by gravity. The dispenser includes a stopper having first and second boreholes extending there through, the stopper being adapted to form an air-tight seal when it is seated into the bottle neck. An air pressure tube routed through the first of the boreholes has a first end open to atmospheric air and a second end open to the interior of the bottle. An expandable volumetric displacement balloon is attached to the second end of the air pressure tube and a one-way liquid valve is disposed in the outlet of the liquid flow channel in the stopper.

REFERENCES:
patent: 2673013 (1954-03-01), Hester
patent: 3343701 (1967-09-01), Mahoney
patent: 3361303 (1968-01-01), Jacuzzi
patent: 3365202 (1968-01-01), Carleton
patent: 3883043 (1975-05-01), Lane
patent: 4011971 (1977-03-01), Haydon
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patent: 4809884 (1989-03-01), Stackhouse
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patent: 4984711 (1991-01-01), Ellis
patent: 5248064 (1993-09-01), Claycomb, Jr.
patent: 5667110 (1997-09-01), McCann et al.
patent: 5957333 (1999-09-01), Losenno et al.

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