Tamper-evident cover for threaded neck

Details Tamper-evident cover for threaded neck Tamper-evident cover for threaded neck

1986-08-14

1988-03-08

Marcus, Stephen

Bottles and jars

Closures

Frangible member or portion

215 31, 220270, 220276, B65D 4118

Patent

active

047294884

ABSTRACT:
Liquified and compressed gases are sold in cylinders having threaded necks which attach to lanterns, stoves, torches, etc., which use the gas as fuel. A tearable plastic cap fits over the neck and has an internal bead which snaps under a shoulder on the neck. Above the shoulder is a circumferential first score line and a second score line extends to the bottom of the cap. In proximity to the second score line is a pull tab. Before the tab is pulled, the cap prevents surreptitious dispensing of the gas, protects the threads and prevents contamination of the neck and of the valve inside the neck. To remove the cap, the tab is pulled, tearing the cap along the second and then the first score line, thereby removing the lower portion of the cap, including the bead. The upper portion of the cap may be used for reclosure.

REFERENCES:
patent: 2926806 (1960-03-01), Streng et al.
patent: 3120900 (1964-02-01), Faulstich
patent: 3283935 (1966-11-01), Samuels et al.
patent: 4202455 (1980-05-01), Faulstich
patent: 4307821 (1981-12-01), McIntosh
patent: 4496066 (1985-01-01), Bullock, III
patent: 4522308 (1985-06-01), Sullivan

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