Bottles and jars – Closures – With pressure-responsive seal
Patent
1987-04-22
1988-07-26
Marcus, Stephen
Bottles and jars
Closures
With pressure-responsive seal
215228, 220 4E, B65D 5300
Patent
active
047594578
ABSTRACT:
A tamper-proof, tamper-edvident package includes a pill, capsule, ingestible or medicant bottle-holding container and a sealing lig thereover. The lid includes a flexible lip with a conical sealing surface surrounding the container and in angular juxtaposition upon assembly with a more rigid conical sealing surface on the container. A vacuum is drawn in a fixture holding the container and lid by evacuation of air. Upon subsequent exposure of the container/lid exteriors to ambient environmental air the flexible lip is snapped tight by differential pressure (higher on the exterior of the package) so that the lip sealing surface which was at an angle to the container seal surface, is in parallelism with the container seal surface resulting in a wide sealing band which is not breakable by normal hand pulling or twisting. If the interior vacuum is broken by prying the seal apart or by inserting a hypodermic needle to adulterate the contents, the user when purchasing the package can easily ascertain tampering due to the ease with which the container and lid parts can be taken apart.
REFERENCES:
patent: 1325056 (1919-12-01), Taliaferro
patent: 2024532 (1935-12-01), Maneuso et al.
patent: 2280070 (1942-04-01), Glocker
patent: 3672527 (1972-06-01), Bly
patent: 3850330 (1970-11-01), Koontz et al.
patent: 4111326 (1978-09-01), Percarpio
MacDonald Thomas S.
MacPherson Alan H.
Marcus Stephen
Stucker Nova
Winters Paul J.
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