Bottles and jars – Closures – Combined or convertible
Patent
1995-05-15
1997-08-05
Shoap, Allan N.
Bottles and jars
Closures
Combined or convertible
220212, B65D 5124
Patent
active
056533527
ABSTRACT:
A resealable cap for a drink bottle having a pump for pressurizing a liquid in the bottle and a tight sealing connection with a threaded bottle neck. The pump is a tube having a soft resinous stepped base within a cylinder which extends downward through the neck into the interior of the bottle. A seal is formed between the base of the tube and the cylinder wall. At the base of the cylinder is a valve for allowing air compressed by the soft base and tube to flow into the bottle and which is sealed shut by the higher pressure created in the bottle when the soft base is retracted. The soft base has a small expandable slit adjacent the tube and above the step forming the seal through which deforms so that air can enter the cylinder on the upstroke. The slit is compressed closed on the downstroke and prevents air from leaving so it is instead forced through the valve.
REFERENCES:
patent: 4515019 (1985-05-01), Woodfill
patent: 4723670 (1988-02-01), Robinson et al.
patent: 4763802 (1988-08-01), Johnston
patent: 5031785 (1991-07-01), Lemme
patent: 5207339 (1993-05-01), Shyu
patent: 5294010 (1994-03-01), Tschida
patent: 5322094 (1994-06-01), Janesko
Newhouse Nathan
Shoap Allan N.
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