Apparatus for forming tamper-proof closures

Details Apparatus for forming tamper-proof closures Apparatus for forming tamper-proof closures

1977-09-12

1980-01-29

Keenan, Michael J.

113121A, B21D 5150

Patent

active

041855760

ABSTRACT:
A new tamper-proof closure and apparatus for forming such tamper-proof closures is disclosed herein. The closure includes a cap having a plurality of circumferentially spaced slits separated by bridges with a plurality of lines of weakness extending perpendicular to the slits and aligned with the respective bridges. The lines of weakness have a residual thickness which varies between opposite ends. The apparatus includes a cutting and scoring tool having a first elongated member that defines a cutting edge which has spaced V-shaped recesses and a second member having an elongated surface extending across each of the recesses with the elongated surface having a plurality of projections that extend perpendicular to the cutting edge and are centrally spaced with respect to the V-shaped recesses.

REFERENCES:
patent: 3272381 (1966-09-01), Bozek
patent: 3824941 (1974-07-01), Hannon
patent: 3861551 (1975-01-01), Hannon

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