Receptacles – Closures – With closure opening arrangements for means
Patent
1984-12-31
1985-10-22
Norton, Donald F.
Receptacles
Closures
With closure opening arrangements for means
215252, 215306, 220375, B65D 4134
Patent
active
045483329
ABSTRACT:
A container (10) is disclosed as including a receptacle (12), a cover (14), and a tether (16) that are molded from plastic unitary with each other with the receptacle and cover connected by the tether. Downward cover movement over the receptacle provides a snap action engagement of locking surfaces on mating helical threads (30) and (32) of the receptacle and cover in order to prevent opening movement of the cover without unthreading rotation. The tether (16) has a length that is sufficiently long to permit the initial cover closing and sufficiently short to limit unthreading rotation of the closed cover for opening with the tether intact. Tether (16) is frangible by either cutting with a knife or scissors, etc. or by breaking upon the application of unthreading cover rotation to thereby provide a visual indication of the cover opening in order to render the container tamperproof.
REFERENCES:
patent: 3874570 (1975-04-01), Katzman et al.
patent: 4197955 (1980-04-01), Luenser
patent: 4320853 (1982-03-01), Moore
patent: 4453647 (1984-06-01), Neat
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