Container closure with multiple liner seals

Details Container closure with multiple liner seals Container closure with multiple liner seals

1993-09-30

1994-10-18

Shoap, Allan N.

Bottles and jars

Closures

Cap type

215350, 215351, B65D 5300

Patent

active

053560213

ABSTRACT:
A container closure having a multiple liner seal is disclosed. The closure comprises a plastic closure cap having a circular top wall portion and a depending annular skirt portion. The skirt portion has an internal thread formation for threadedly engaging a cooperative container. In a typical closure, a pilfer band depends from the skirt portion. The closure cap has an abutment internal thereto, generally at the juncture of the top wall portion and the skirt portion. A first resilient, molded-in plastic seal is positioned in the cap adjacent to and against the top wall portion, and a second resilient plastic seal is positioned in the closure and extends thereacross resting upon the abutment. When the closure is threadedly engaged with a container, the second seal provides a top/side seal to seal the contents from the environs. The closure will seal a container with or without the second seal in place because of the independent sealing capabilities of the first seal.

REFERENCES:
patent: 681132 (1901-08-01), Norton
patent: 1755168 (1930-04-01), Carvalho
patent: 2465662 (1949-03-01), Sanford
patent: 3443771 (1969-05-01), Olson
patent: 3958710 (1976-05-01), Harding et al.
patent: 4497765 (1985-02-01), Wilde et al.
patent: 4531649 (1985-07-01), Shull
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patent: 4747500 (1988-05-01), Gach et al.
patent: 5004112 (1991-04-01), McBride
patent: 5050753 (1991-09-01), Trump et al.
patent: 5062538 (1991-11-01), Ochs
patent: 5121845 (1992-06-01), Blanchard
patent: 5188628 (1993-02-01), Rani et al.

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