Pilferproof closure

Details Pilferproof closure Pilferproof closure

1981-03-11

1982-11-30

Norton, Donald F.

Bottles and jars

Closures

Frangible member or portion

215237, 220269, B65D 3904

Patent

active

043612440

ABSTRACT:
A closure for a container having a lever-openable plug wherein the lever is attached to other parts of the closure by a frangible member which must be broken to permit actuation of the lever to open the plug, thus indicating to a subsequent observer that either the closure had been open or an attempt had been made to do so.

REFERENCES:
patent: 3080088 (1963-03-01), Corrinet
patent: 3106311 (1963-10-01), Fairchild
patent: 3127064 (1964-03-01), Fairchild
patent: 3465906 (1969-09-01), Wagner et al.
patent: 3651992 (1972-03-01), Hazard
patent: 3656648 (1972-04-01), Powaloski et al.
patent: 3743129 (1973-07-01), Willis et al.
patent: 3744662 (1973-07-01), Zundel
patent: 4006839 (1977-02-01), Thiel et al.
patent: 4200196 (1980-04-01), Bashour

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