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Publication numberUS3727803 A
Publication typeGrant
Publication dateApr 17, 1973
Filing dateDec 31, 1970
Priority dateApr 8, 1969
Publication numberUS 3727803 A, US 3727803A, US-A-3727803, US3727803 A, US3727803A
InventorsCampbell J
Original AssigneeCampbell J
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Containers
US 3727803 A
Abstract
A collapsible container made preferably from material such as low density polythene for use principally in containing and dispensing viscous or semi-liquid products such as artists' colours the container having thin flexible walls rising from a base and terminating in a neck which may be closed by means of any suitable closure the base being normally flat and sufficiently stiff to provide a support for the container. Opposite walls of the container are provided with at least one fold whereby the walls may be collapsed after the fashion of a bellows to a substantially flat configuration which allows practically the whole of the contents to be expressed from the container.
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Description  (OCR text may contain errors)

United States Patent [191 Cobb Apr. 17, 1973 1 CONTAINERS 3,367.380 I 2/1968 Dickey ..222/l07 x 7 l t l 6] nven or 'kx; g; ggg Primary Examiner-Robert B. Reeves Austral; Assistant Examiner-Francis J. Bartuska AttorneyToren and McGeady [22] Filed: Dec. 31, 1970 21 Appl. No.: 103,024 [57] ABSTRACT I A collapsible container made preferably from material such as low density polythene for use principally in [30] Foreign Apphcamm Pnonty Data containing and dispensing viscous or semi-liquid Apr. 8. 1969 Australia ..530s4 Products Such as artists colours the containef having thin flexible walls rising from a base and terminating 52 US. Cl ..222/215, 5 in a neck which may be closed by means of any suita- 51 Int. Cl. ..Bd 37/00 ble closure base being normally flat and [58] Field of Search ..222/107, 215, 92, ciemly Stiff Pmvide a Support for the container- 222/ 106 /5. 229/7 17 41 R posite walls of the container are provided with at least one fold whereby the walls may be collapsed after the fashion of a bellows to a substantially flat configura- [56] References Cited tion which allows practically the whole of the contents UNITED STATES PATENTS to be expressed from the container.

3,559,847 2/197! Goodrich ..222/l07 1 Claim, 4 Drawing Figures PATENTED 1 71973 v 3. 727. 803

sum 1 or z ENT 0R IA E CAMPBELLCOBE PATENTEU 1 H975 3. 727. 803

SHEEI 2 OF 2 FIG.3

INVENTOR:

J'AMES CAMPBELL c088 Tmmamd/Q 7% ATTORN S CONTAINERS The present invention relates to containers and more particularly to collapsible containers for use with viscous liquids such as paints.

Some types of paints, such as Artists colours are .conveniently supplied in a highly viscous form and where these are supplied in very small quantities no difficulty arises as they may be sold in small collapsible tubes of metal or plastic material. Where however, it is desired to supply the material in a larger quantity, for example, half a gallon or one gallon, difficulties arise in packaging it so that it may be dispensed in an easy and convenient manner. If an ordinary high density polythene bottle is used having a sufficiently thin wall to enable it to be readily collapsed, it is found that there is a tendency for the whole bottle to collapse in hot weather, in addition repeated flexing of the wall of the bottle can cause cracking. Such bottles normally have a round bottom which prevents the container from being completely collapsed and thus leads to a waste of material left in the bottom of the container. The dispensing of material, for example, in schools makes it desirable to have a small outlet to the container which adds to the difficulties of extracting the entire contents from the container.

The object of the present invention is to provide an improved collapsible container which is constructed so as to assist in overcoming the difflculties referred to above.

The present invention consists in a collapsible container for viscous material having a base, thin flexible walls rising from the base and terminating in a neck adapted to receive a closure, the base being normally flat and sufficiently stiff to provide a support for the container, opposite walls being provided with at least one fold whereby the walls may be collapsed after the fashion of a bellows to a substantially flat configuration thereby allowing practically the whole of the contents to be expressed from the container.

In order that the'invention may be better understood and put into practice a preferred form thereof is hereinafter described, by way of example, with reference to the accompanying drawings in which:

FIG. 1 is a perspective view of a container constructed in accordance with the invention,

FIG. 2 is an inverted plan view of the container of FIG. 1, and

FIG. 3 is a side elevation thereof.

FIG. 4 is a perspective view of the container in a completely collapsed form.

In the preferred form of the invention the container is formed by moulding from low density polythene and it consists of a base which is relatively thick and rigid to provide a level support for the container. The shape of the base as seen from underneath is approximately that of two similar trapezoids united along the shorter of their parallel sides as is seen in FIG. 2.

The walls 11 of the container rise vertically upwards from around the periphery of the base converging at the upper end of the container to a moulded neck 12 which is adapted to receive a suitable closure not shown. The diameter of the outlet in the neck is relatively small to enable the contents of the container to be dispensed easily and without loss.

By virtue of the shape of the base 10 two opposite sides of the container are formed with a V shaped fold or indentation 113 which extends vertically throughout its length in such a manner that the whole container may be collapsed to a substantially flat position in the manner of a bellows. The base however, owing to its greater rigidity will not collapse in the same manner; it is however possible to fold up opposite edges of the base 10 towards the centre line of the container about the line along which the shorter parallel sides of the two trapezoids are joined as shown in FIG. 4.

With the arrangement described above the contents of the container may be expelled by deforming the container and gradually collapsing it towards the flattened condition. The last remanents of the contents of the container may be expelled by folding up the base in the manner described above until the whole container is in a substantially completely flattened condition and virtually all the contents squeezed out of it. To assist in folding up the base, the container may be formed with an inwardly directed indentation across the line of folding of the base.

The embodiment of the invention described above is given by way of example only as illustrating one form of the invention within the general scope thereof as defined broadly above.

I claim:

1. A collapsible container for dispensing material and, in particular, for dispensing viscous liquids such as paints, comprising a base, side walls secured to and extending upwardly from said base, and a neck and closure member secured to the upper ends of said side walls, said container being deformable from a normal position to a collapsed position for dispensing materials through said neck and closure. member, said base, side walls and neck and closure member formed of a low density polythene with said side walls being thin and flexible and said base being thicker than said side walls and providing a rigid construction relative to said side walls and affording a support for the lower ends of said side walls, said base being flat in the normal position and having four sides with two opposite sides of said base being straight-sided and the other two sides of said base having an inwardly directed V-shaped configuration, said side walls comprise four side walls with two oppositely disposed ones of said side walls having a flat planar configuration and extending upwardly from the straight sides of said base and the other two oppositely disposed said side walls being deformed inwardly into a V-shaped configuration conforming to and extending upwardly from the V-shaped sides of said base so that an apex line extends upwardly in the other said walls from said base to said neck and closure member, whereby at the commencement of dispensation of material from the container, said container can be collapsed with said side walls containing the inwardly directed apex lines moving inwardly toward one another and with the flat planar side walls moving toward one another in the fashion of a bellows but with said base retaining its flat configuration until a considerable amount of the material has been dispensed and then folding said base over across its narrow dimension with the fold line in said base extending outwardly from the lower ends of said side walls for providing the container with a substantially flat configuration for allowing practically all the entire contents to be expelled from the container.

I I i t

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3367380 *Mar 5, 1964Feb 6, 1968Dev Consultants IncCollapsible container
US3559847 *Mar 20, 1968Feb 2, 1971Goodrich Eugene ECollapsible sanitary container with retractable spout
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3810503 *Aug 22, 1972May 14, 1974Cutter LabVariable volume container for fluids
US3926341 *Nov 28, 1973Dec 16, 1975Rit Rech Ind TherapeutBottles in semi-rigid plastic material
US4056138 *Mar 24, 1976Nov 1, 1977Societe Anonyme Dite: BoracierFlexible plastic container
US4096897 *May 27, 1977Jun 27, 1978Baxter Travenol Laboratories, Inc.Molded collapsible solution container having transverse fold lines
US4387833 *Dec 16, 1980Jun 14, 1983Container Industries, Inc.Apparatus for containing and dispensing fluids under pressure and method of producing same
US4898306 *Jan 13, 1988Feb 6, 1990Reseal International Limited PartnershipCollapsible container for flowable substances
US4964540 *Nov 13, 1989Oct 23, 1990Exxel Container, Inc.Pressurized fluid dispenser and method of making the same
US5080260 *Jul 9, 1990Jan 14, 1992During AgSelf-supporting, stand-up, yet foldable plastic bottle, mold form for its manufacture, and method of reducing its volume when empty
US5174458 *May 12, 1992Dec 29, 1992Colgate-Palmolive CompanyCollapsible container
US5224613 *Aug 31, 1990Jul 6, 1993Robbins Edward S IiiCollapsible container
US5384138 *Jun 26, 1991Jan 24, 1995Edward S. Robbins, IIICollapsible containers
US5556005 *Jan 9, 1995Sep 17, 1996Sprintvest Corporation NvCollapsible soap dispenser
US5727651 *Jul 9, 1996Mar 17, 1998Benedict; Doug M.Oil pan for a boat
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US6170712May 23, 1997Jan 9, 2001George KasboskeContainer for holding and dispensing non-rigid material
US6523330 *Oct 13, 1998Feb 25, 2003In-Flo Liquid Dispensing CorporationMethod and apparatus for capping, evacuating and folding collapsible plastic containers
US7337907 *Aug 1, 2003Mar 4, 2008Polyzen, Inc.Press-flat centrifuge tube and specimen collection assembly comprising same
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Classifications
U.S. Classification222/215, 222/95, 401/183
International ClassificationB65D35/08, B65D8/04, B65D8/14, B65D35/02, B65D1/02
Cooperative ClassificationB65D35/08, B65D1/0292
European ClassificationB65D35/08, B65D1/02D3