Tamper indicating screw type cap

Details Tamper indicating screw type cap Tamper indicating screw type cap

1995-04-14

1997-10-21

Shoap, Allan N.

Bottles and jars

Closures

Frangible member or portion

215258, B65D 4134

Patent

active

056787146

ABSTRACT:
A tamper-indicating screw-on closure cap for receptacles having threaded necks includes a tamper-indicating security band in the form of a ring including a stop strip turned inwardly of the ring and inclined in an inward and upward direction so that, upon first assembly of the cap to a receptacle neck the stop strip engages beneath a peripheral projection on the neck. The stop strip includes a continuous upper edge lying in an imaginary stop plane extending perpendicular to the axial direction of the cap and spaced zones of lesser thickness that define a plurality of sectors that also include an inwardly projecting chordwise rib terminating at an inner edge that subtends each respective sector, wherein the edges of the ribs together define a polygonal section of passage the inscribed circle of which presents a diameter smaller than that of the peripheral projection of the neck.

REFERENCES:
patent: 4147268 (1979-04-01), Patel et al.
patent: 4394918 (1983-07-01), Grussen
patent: 4458822 (1984-07-01), Ostrowsky
patent: 4470513 (1984-09-01), Ostrowsky
patent: 4657153 (1987-04-01), Hayes
patent: 4744479 (1988-05-01), Schottli
patent: 4801031 (1989-01-01), Barriac
patent: 4978016 (1990-12-01), Hayes
patent: 5147053 (1992-09-01), Friedenthal

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