Bottles and jars – Closures – Shrinkable closure – fastener – or seal
Patent
1995-06-01
1997-04-22
Shoap, Allan N.
Bottles and jars
Closures
Shrinkable closure, fastener, or seal
215275, 215320, 220201, 220319, 156 69, B65D 4124
Patent
active
056222742
ABSTRACT:
A closure is intended for use on a container having an opening defined by a rim portion and a finish including a ledge situated below the rim portion. The closure includes a central body portion sized to cover the container opening and a peripheral portion adapted to contact the rim portion of the container. A plurality of tabs are unitarily fixed to the peripheral portion, each tab including a tang adapted to engage the ledge of the container finish. Each tab also includes a thinned, stressed portion between the tang and the rim portion which is reactive to an application of heat to cause shortening of the tab length. The thinned portion also acts as a hinge to permit flexural displacement of the tab with respect to the body portion. The closure when applied to a container is completed by a band which encompasses the tabs, the band also being reactive to an application of heat to cause contraction of the band to insure continued engagement between the ledge and tangs. The application of heat to the band is preferably simultaneous with the application of the heat to the tabs thereby causing a secure hermetic seal to occur between the container rim and the peripheral portion of the closure.
REFERENCES:
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patent: 3532244 (1970-10-01), Yates, Jr.
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patent: 3955699 (1976-05-01), Amberg et al.
patent: 4171062 (1979-10-01), Allen et al.
patent: 4227616 (1980-10-01), Lecinski, Jr. et al.
patent: 4625890 (1986-12-01), Galer
patent: 4782976 (1988-11-01), Kenyon, 2nd.
Electra Form, Inc.
Newhouse Nathan
Shoap Allan N.
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