Bottles and jars – Closures – Receptacle interior communicable with exterior with closure...
Patent
1984-09-25
1985-12-24
Norton, Donald F.
Bottles and jars
Closures
Receptacle interior communicable with exterior with closure...
215344, 215DIG1, B65D 5300
Patent
active
045600775
ABSTRACT:
A plastic closure cap particularly suited for use in situations which require a tight seal such as with carbonated beverage containers is disclosed. A pair of sealing flanges extend downwardly and outwardly from an inner surface of the top of the closure cap. These sealing flanges have a horizontal seal interference distance which increases with increased cap size to maintain an effective sealing function. Seal flange back up abutment surfaces are contacted by the free ends of the seal flanges and limit the deflection of the flanges thus causing the seal flanges to wrap around the container mouth as the cap is secured to the bottle. A load stop ring is positioned between, and separated from the seal flanges on the inner surface of the closure cap and contacts the container neck when the closure is in place. The sealing flanges include vent slots which increase the safety and convenience of the closure cap. Anti-doming ribs are also formed on the cap's inner top surface and prevent the cap from being forced outwardly into a convex shape by high pressure contents of a pressurized container to which the closure cap may be applied.
REFERENCES:
patent: 2927709 (1960-03-01), Hoffman et al.
patent: 3215297 (1965-11-01), Acton et al.
patent: 3255907 (1966-06-01), Eddy
patent: 3463340 (1969-08-01), Lindstrom
patent: 4143785 (1979-03-01), Ferrell
patent: 4346812 (1982-08-01), Banich
patent: 4415096 (1983-11-01), Ohmi
patent: 4429802 (1984-02-01), Marks
patent: 4442947 (1984-04-01), Banich, Sr.
Norton Donald F.
Sun Coast Plastics, Inc.
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