Receptacles – Closures – With closure opening arrangements for means
Patent
1977-08-30
1978-11-21
Hall, George T.
Receptacles
Closures
With closure opening arrangements for means
215253, B65D 4132
Patent
active
041262441
ABSTRACT:
A container component with a wall section having means imparting a predefined and selectively weakened fracturable zone therein for conveniently opening the wall section in response to manually exerted force. The selectively weakened fracturable zone is provided by means of a pair of laterally interspaced channels defined in oppositely facing major sides of the wall section and which cooperate to define a fracturable partition, or bridge-wall, therebetween which extends between the oppositely facing major sides of the wall section. The channels further cooperate to impart a predefined lateral path of weakness extending therebetween through the partition. In response to manually applied force, the partition is adapted to fracture along the predefined lateral path of weakness and separate into a pair of overlapping ledges; one of which residually remains in accompaniment with each one of the resultant, residual free edges of the separated portions of the fractured wall section.
The overlap of the residual ledges which results when the wall section is fractured provides safety and ecology features which are especially desirable for containers provided with a depressible, or push-in, type of fracturable wall section, since the overlapping ledges may be arranged to obstruct removal of the depressed section from within the protective interior confines of the container after the container has been opened.
The lateral interspacing and the relative depths of the channels may be selectively and independently varied to accommodate independent selectivity and control over the resistance to fracture, or rupture, of the wall section in response to manually exerted opening forces as well as interiorly applied forces, such as would be exerted against the wall section by the confinement of pressurized or vacuumized contents within a container and also exteriorly applied forces such as might be exerted against the wall section during packaging, handling, shipment and storage of a container.
REFERENCES:
patent: 3499572 (1970-03-01), Ruekberg
patent: 3951298 (1976-04-01), Klein
patent: 3960287 (1976-06-01), Baker
Click M. E.
Dence Richard B.
Hall George T.
Owens--Illinois, Inc.
Wilson D. H.
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