Receptacles – Closures – Removable closure guided in rotary movement
Patent
1987-10-08
1989-03-07
Hall, George T.
Receptacles
Closures
Removable closure guided in rotary movement
220855P, 222568, 222569, B65D 4104
Patent
active
048098701
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to inserts for fixing into openings and while not limited thereto is particularly suitable for fixing into openings in plastic containers.
Containers are usually formed of a container body having an opening therein in which is fitted a neck member which communicates with the interior of the container, the neck member being provided with an internal or external thread which accommodates a cap or plug whereby the opening in the neck is closed to seal the contents within the container, or a pouring spout for the removal of the contents of a container with reduced spillage.
In the case of metal containers the manufacture of the neck member integral with the container wall has proved costly and if the neck member is manufactured as a separate component its sealing in an opening of the container has proved difficult. In consequence it has been proposed to manufacture inserts for containers from plastic materials and in this case the insert is simply force fitted into an opening in the container and the seal between the insert is effected by a radial sealing force exerted by the insert on the edge of the opening in the container which accommodates the insert.
In use there is a tendancy for such inserts to move longitudinally in the container opening. This movement is caused by loadings imposed on the container e.g. by rough handling and in some cases such movement breaks the seal between the container opening and the insert thereby causing the container to leak.
The present invention according to one aspect provides an insert for a container which overcomes such problems, from another aspect provides a container which includes such an insert and from a further aspect provides for the joining of two tubular members by said insert.
A preferred embodiment of the invention will now be described with reference to the accompanying drawings in which
FIG. 1 is a perspective view of an insert in accordance with the invention;
FIG. 2 is a cross-sectional view showing the method of fitting the insert in a container;
FIG. 3 is a cross-sectional view showing the insert fitted in the container; and
FIG. 4 is an enlarged view showing the method of locking the insert in the container.
FIG. 5 is a cross-sectional view showing the insert with an integral pouring spout.
FIG. 6 is a cross-sectional view showing the insert used to connect two tubular members.
Referring now to the drawings the insert 1 is manufactured in two parts namely the cap member 2 and the locking member 3. The cap member 2 is formed of a circular disc 4 having an opening 5 therein, a first integral cylindrical sleeve 6 extends inwardly from the periphery of the opening and defines the neck of the insert, the internal wall of the sleeve is threaded as at 7 to accommodate a plug 8. In certain applications the insert may be formed with a rupturable membrane (not shown) secured across the bottom end of the neck.
Extending from the disc 4 is a second integral sleeve 9 spaced radially outwardly from the first sleeve 6 and defining with these sleeves a cavity 10. The sleeve 9 is slightly longer than the sleeve 6 and has an inset portion forming a channel 11 which is formed in sleeve 9 by compression of the locking rim 28 which is prevented from rolling inwards when compressed by the locking rim 28 by an extension of the sleeve 9 which is used to form the cavity 16 as shown in FIG. 4 and a tongue 12, the purpose of which will be explained hereafter.
A flange 13 which is adapted to seat on an outer wall of the container extends downwardly from the disc.
The locking member 3 comprises a ring shaped member having two limbs 14 and 15 defining therebetween a cavity 16 which is in communication with the internal pressure of the container via at least one hole formed in the bottom edge 17. The limb 15 extends in a plane normal to the plane of the bottom edge 17 of the ring and the wall of the limb 14 is angled as at 18 and 19 from a position 20 to join the bottom edge of the ring member and thereby forming a nosing to facilitate the insertion of
REFERENCES:
patent: 2900103 (1959-08-01), Taylor, III et al.
patent: 2916311 (1959-12-01), Keplinger
patent: 4105135 (1978-08-01), Bradshaw et al.
patent: 4422563 (1983-12-01), Babiol
patent: 4632282 (1986-12-01), Nagashima
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