Bottles and jars – Closures – Frangible member or portion
Patent
1989-05-23
1990-08-28
Norton, Donald F.
Bottles and jars
Closures
Frangible member or portion
215305, B65D 4142
Patent
active
049518291
ABSTRACT:
A crown cap for sealing bottles comprising a cap body including substantially a flat top, a crimped portion formed on the periphery of the cap body and an outwardly extending finger tab integrally connected to a part of the crimped portion and having a width of about 5 to 7 included teeth. A small notch is formed at the intersection between the basal end of the finger tab and the crimped portion, from which a score line extends upwardly along the crimped portion and passes slightly across the peripheral curved portion of the flat top and has an appropriate depth. The finger tab is formed at the margin with a pleated portion to strengthen the rigidity. The score line may be curved at the terminal end towards any of one side on the right or the left and may be additionally provided with a short score line perpendicular to the first score line. In this construction, the crown cap can be easily opened off of the mouth of a bottle by pulling the finger tab over with fingers.
REFERENCES:
patent: 1706720 (1929-03-01), Wettstein
patent: 2156258 (1939-05-01), Atwood
patent: 3187919 (1965-06-01), Inglis
patent: 3207351 (1965-09-01), Stuart
patent: 4098420 (1978-07-01), Torii
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