Bottles and jars – Closures – Retained by bonding or adhesive means
Patent
1988-11-28
1989-07-04
Norton, Donald F.
Bottles and jars
Closures
Retained by bonding or adhesive means
215252, B65D 4134
Patent
active
048442720
ABSTRACT:
A closure system includes a container and a closure comprising a cap having a cylindrical skirt with internal threads, an annular tamper band having an inside diameter larger than the outside diameter of the skirt forming an annular gap therebetween, and flexible bridges joining the tamper band to the free end of the cap skirt. The bridges have angularly spaced end segments extending radially outward and radially inwardly from the skirt and tamper band respectively, and an intermediate segment extending arcuately around the gap between the end segments. The closure is integrally molded with the bridges and tamper band extending radially outward in a common plane transverse to the central axis of the cap. The bridges flex to allow axial extension of the tamper band for bonding to a shoulder or transfer bead on the container. Unscrewing of the cap fractures the bridges, preferably at a section of reduced cross-section provided by notches at the intersection of the bridges with the cap skirt. The set of the resilient bridges causes them to spring against the container shoulder or transfer bead upon fracturing to provide a positive visual indication of opening or tampering with the closure.
REFERENCES:
patent: 3259233 (1963-09-01), Beeman
patent: 3604596 (1969-01-01), Khoury et al.
patent: 3788509 (1974-01-01), Keeler
patent: 4197955 (1980-04-01), Luenser
patent: 4461391 (1984-07-01), Davis
patent: 4570825 (1986-02-01), Stull
patent: 4596339 (1986-06-01), Andersson
patent: 4640427 (1987-02-01), Marino et al.
patent: 4702383 (1987-10-01), Wender
patent: 4768666 (1988-09-01), Kessler
Continental Plastics, Inc.
Norton Donald F.
Westerhoff Richard V.
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