Molded plastic tampering-indicating closure and apparatus for ma

Details Molded plastic tampering-indicating closure and apparatus for ma Molded plastic tampering-indicating closure and apparatus for ma

1987-01-02

1988-06-07

Marcus, Stephen

Bottles and jars

Closures

Frangible member or portion

B65D 4134

Patent

active

047490942

ABSTRACT:
An internally threaded, molded plastic tamper-indicating closure with a marginal portion of the closure skirt having a plurality of wings projecting non-radially inwardly to engage the underside of a flange on the finish of a container to which the closure is to be applied to separate the marginal portion of the closure from the portion thereabove at a weakening line therebetween, the closure being removed by unscrewing it from the core pin of the molding tooling against which it is molded and having inwardly extending and downwardly projecting ribs on the inside of closure skirt above the wings to impart rotation to an annular portion of the core pin that is rotatable with respect to another portion of the core pin, upon the unscrewing of the closure from the core pin, such rotation of the annular portion being in the same direction as the direction of rotation of the closure as it is being unscrewed to help remove the wings of the closure from the core pin upon the unscrewing of the closure therefrom.

REFERENCES:
patent: 4497765 (1985-02-01), Wilde et al.

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