Bottles and jars – Closures – Closure removal causes portion thereof to remain with...
Patent
1980-04-21
1982-08-10
Hall, George T.
Bottles and jars
Closures
Closure removal causes portion thereof to remain with...
215252, B65D 4912
Patent
active
043434088
ABSTRACT:
Tamper-evident closures which are useful in conjunction with various bottles and containers are disclosed. The closures are intended to be used in connection with containers having threaded necks above an annular collar, and they comprise one-piece closures including an end wall, an internally threaded upper portion and a depending lower skirt portion which includes an inwardly projecting bead adapted to engage the annular collar on the container. The depending lower skirt portion has a substantially uniform thickness throughout its entire area intended to contact the annular collar on the container, and theclosure includes an area of weakness which is designed to fracture in a substantially horizontal plane across the closure or, in another embodiment, in a plane which neither passes through nor is tangential to the annular collar on the container. Fracture thus occurs when the closure is unthreaded from the container, thereby leaving the lower skirt portion engaged to the annular collar on the container after the end wall and internally threaded upper portion of the closure have been removed.
REFERENCES:
patent: 3329295 (1967-07-01), Fields
patent: 3360149 (1967-12-01), Roth
patent: 3784041 (1974-01-01), Birch
patent: 3955716 (1976-05-01), Goncalves
patent: 4033472 (1977-07-01), Aichger
patent: 4196818 (1980-04-01), Brownbill
patent: 4210251 (1980-07-01), Grussen
General Kap (P.R.) Corporation
Hall George T.
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