Bottles and jars – Closures – With means to facilitate closure removal
Patent
1994-10-06
1998-02-10
Shoap, Allan N.
Bottles and jars
Closures
With means to facilitate closure removal
215318, 220288, B65D 4310
Patent
active
057159602
DESCRIPTION:
BRIEF SUMMARY
This invention relates to containers and closures therefor, and especially to a container/closure combination wherein the closure is removed from the container by a rotational movement followed by an axial movement.
BACKGROUND OF THE INVENTION
GB 2,063,226 describes a closure and container combination wherein the closure is provided internally with a plurality of projections of equal circumferential length spaced apart by equal circumferential distances and the container is provided around its neck with a plurality of projections defining spaced slots therebetween, which slots have a circumferential length and are so positioned that the projections on the closure may pass through the slots on the container neck, or a skin of the closure and the container neck being shaped such that contact between the said skirt and the container neck when the container and closure are at selected relative rotational positions thereof causes the said skin of the closure to be temporarily deformed whereby the projections on the closure are urged through the slots on the container neck.
GB 1,471,367 describes a container and closure combination comprising a container having a rigid neck terminating in an annular bead provided with an upper sealing surface and an annular shoulder surface arranged substantially parallel to the upper sealing surface and facing downwardly away from the latter, the shoulder surface extending laterally inwardly towards a bore in the said neck, said neck being provided with peripheral bulges, said bulges being substantially crescent-shaped viewed from the end of the neck; and a closure having a rigid end portion and a resilient skirt, said skirt being provided with inside hooks engaged with the shoulder surface of said bead and with inner lugs adapted to engage the peripheral bulges on relative rotation of said closure and said container.
SUMMARY OF THE INVENTION
This invention provides a container and closure combination wherein the container comprises a body, a neck portion defining a mouth opening, between the neck and the body there being a shoulder portion, between the shoulder portion and the body there being a ledge portion integrally formed as a moulding of the container, the cross-sectional shape of the container and of the closure at the point where the periphery of the skirt of the closure meets the body of the container being substantially oval, the closure comprises a skirt portion the periphery of which substantially conforms to the cross-section of the container at the point where the periphery meets the body of the container, the periphery of the said skirt having at least one rounded ramped portion adapted to cooperate with at least one corresponding rounded ramped portion on the container the said ramp portion being provided by the said skirt having a scalloped periphery, and the said ledge portion of the container being of corresponding scalloped shape, such that when the closure is in place on the container the convex portions of the periphery of the closure intermesh with corresponding concave portions of the ledge portion and vice versa such that relative axial rotation of the closure and container causes the convex portions of the scalloped periphery of the closure to ride up the curve of the concave portions of the scalloped ledge portion of the container to cause a consequential relative longitudinal movement of the closure and container such as to cause disengagement of the closure from the container.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a front elevation of the container;
FIG. 2 is a side elevation of the container;
FIG. 3 is a plan view of the container;
FIG. 4 is a sectional view of the closure cut along the major axis of the oval;
FIG. 5 is a sectional view of the closure cut along the minor axis of the oval;
FIG. 6 is a view of the closure looking toward the inner side of the closure face;
FIGS. 7 and 8 show the operation of the closure.
DESCRIPTION OF THE PREFERRED EMBODIMENT
According to the present invention there is provided a container and clos
REFERENCES:
patent: 3252446 (1966-05-01), Bateman
patent: 3826397 (1974-07-01), Atkins
patent: 3828962 (1974-08-01), Atkins
patent: 3904063 (1975-09-01), Hauser
patent: 3910444 (1975-10-01), Foster
patent: 4586623 (1986-05-01), Hatakeyama et al.
patent: 4858777 (1989-08-01), Morel
patent: 4967921 (1990-11-01), Pre et al.
Hylton Robin A.
Lentz Edward T.
Shoap Allan N.
SmithKline Beecham p.l.c.
Williams Janice E.
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