Bottle caps

Details Bottle caps Bottle caps

1982-12-14

1985-11-05

Moy, Joseph Man-Fu

Bottles and jars

Closures

Frangible member or portion

215321, B65D 4134

Patent

active

045508437

ABSTRACT:
A plastic screw cap for carbonated beverage bottles having standard necks. Screwing the cap on forces its antitamper skirt over a shoulder of the bottle neck. Unscrewing the cap causes the skirt, or a portion connecting the skirt to the main body of the cap, to break. The skirt has a throat whose I.D. (inside diameter) is smaller than the O.D. (outside diameter) of the bottle threads, but is large enough so that the cap can, under light pressure, wobble or rock down the neck to seat the cap properly for screwing on. The skirt may have a flap which becomes effective to decrease the effective skirt diameter when the cap is being unscrewed.

REFERENCES:
patent: 4291813 (1981-09-01), Allen et al.
patent: 4299328 (1981-11-01), Ochs et al.
patent: 4301937 (1981-11-01), Von Hagel
patent: 4305516 (1981-12-01), Pernz et al.
patent: 4394918 (1983-07-01), Grussen
patent: 4401227 (1983-08-01), Pehr
patent: 4402418 (1983-09-01), Ostrowsky

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