Pilferproof cap

Details Pilferproof cap Pilferproof cap

1980-11-28

1982-10-05

Norton, Donald F.

Bottles and jars

Closures

Frangible member or portion

B65D 4134

Patent

active

043524362

ABSTRACT:
A plastic screw-on closure adapted for use with containers and having provision to indicate when the sealed container closure has been tampered with. The closure has a cap, a band for application over the shoulder of a container, means for connecting the cap and band and drive means for controlling relative rotation of the cap and band as the band is applied over a shoulder on a container. The drive means provides engagement between the cap and band during application of the closure, thereby ensuring the integrity of the connecting means during application of the closure. However, the drive means is ineffective during removal of the cap, such that the connecting means fractures due to axial separation of the cap and band.

REFERENCES:
patent: 3329295 (1967-07-01), Fields
patent: 3463341 (1969-08-01), Fields
patent: 4241841 (1980-12-01), Boller
patent: 4278180 (1981-07-01), Willis

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