Tamper-evident closure with ribbed skirt

Details Tamper-evident closure with ribbed skirt Tamper-evident closure with ribbed skirt

1986-04-14

1987-05-26

Norton, Donald F.

Bottles and jars

Closures

Frangible member or portion

B65D 4134

Patent

active

046678387

ABSTRACT:
An improved tamper-evident closure cap assembly for a container is disclosed. The closure cap assembly includes a breakaway skirt portion molded as a unitary part of the main body of the cap. The skirt incorporates a lower annular ring which engages a corresponding tamper bead on a container to tear the skirt portion away from the cap upon removal of the cap from the container. An annular band extends below the ring at the outer circumference of the skirt, forming an angled channel below the ring and inside the annular band. A plurality of spaced ribs span the channel from the ring to the band to strengthen the ring while allowing expansion of the skirt during capping operations.

REFERENCES:
patent: 4196818 (1980-04-01), Brownbill
patent: 4278180 (1981-07-01), Willis
patent: 4322012 (1982-03-01), Conti
patent: 4432461 (1984-02-01), Mumford et al.
patent: 4436212 (1984-03-01), Alejandro Llera
patent: 4479586 (1984-10-01), Csaszar
patent: 4497765 (1985-02-01), Wilde et al.
patent: 4503985 (1985-03-01), Swartzbaugh et al.
patent: 4526282 (1985-07-01), Dutt et al.
patent: 4529096 (1985-07-01), Chartier et al.
patent: 4552328 (1985-11-01), Dutt et al.

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