Receptacles – Closures – With closure opening arrangements for means
Patent
1979-08-20
1980-11-25
Hall, George T.
Receptacles
Closures
With closure opening arrangements for means
220306, 220307, 215211, 215301, 215224, B65D 4304
Patent
active
042353491
ABSTRACT:
A safety closure is provided for closing the open neck of containers having a bead type finish formed on such neck end. The closure comprises a unitary element molded from a resilient plastic material and having a generally horizontal circular panel portion and an integral, generally vertical peripheral flange portion. The flange portion is provided with an internally projecting rib which snaps into engagement with the groove normally provided beneath the bead of a container bead finish. In the closed position of the closure on the container, the bottom edge of the closure flange is flush with the side wall of the container neck and cannot be engaged by the fingers to pry the closure off of the container. The closure can be opened solely by applying a vertical force to a specific rim portion of the closure which causes an underlying specially shaped segment of the lower rim of the closure to be cammed outwardly sufficient to permit a fingernail to be inserted under such segment and the closure can then be stripped from engagement with the neck of the container.
REFERENCES:
patent: 3782575 (1974-01-01), Braun
patent: 4098418 (1978-07-01), Fields
Click Myron E.
Hall George T.
Nelson John R.
Owens--Illinois, Inc.
Wilson David H.
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