Tamper-proof closure device

Details Tamper-proof closure device Tamper-proof closure device

1977-08-04

1978-09-05

Hall, George T.

Receptacles

Closures

Having means for securing or retaining closure in its closed...

220288, 215274, B65D 4532

Patent

active

041113314

ABSTRACT:
A tamper-proof container closure device having a closed cap member and a crimping ring. The closed cap member is internally threaded and has a flared annular skirt extending around its base. The crimping ring is snapped into a retained position on the flared annular skirt before the cap is screwed onto a container. After the cap is screwed onto a container, the crimping ring is deformable radially inward around a suitable boss at the container opening onto which the container closure device is installed, thereby drawing the flared annular skirt into sealing engagement with the periphery of the boss and preventing removal of the cap without first visibly tearing off the ring.

REFERENCES:
patent: 2080983 (1937-05-01), Merolhe
patent: 2661128 (1953-12-01), Rieke

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