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Publication numberUS3927790 A
Publication typeGrant
Publication dateDec 23, 1975
Filing dateJan 20, 1975
Priority dateJan 20, 1975
Publication numberUS 3927790 A, US 3927790A, US-A-3927790, US3927790 A, US3927790A
InventorsEdward J Chase, William R Topper
Original AssigneeContainer Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Molded container
US 3927790 A
Abstract
A molded container has a tubular body closed at its ends by closures integrally formed therewith. The upper closure has openings for filling and emptying the container. The wall of the container has a central portion formed with indentations and a pair of frusto-conically shaped end portions which diverge axially outwardly from the closure toward the central portion. A shoulder is formed between the indentations and the end portion of the wall to facilitate lifting of the container.
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Description  (OCR text may contain errors)

United States Patent [19] 1111 3,927,790

Chase et al. Dec. 23, 1975 MOLDED CONTAINER 75 Inventors: Edward J. Chase; William R. PWTWY Exam"?e wllham Pnce Asszstant Examiner-Steven M. Pollard Topper, both of Newark, Del. Attorney, Agent, or firm-Carpenter, Ost1s & [73] Asslgnee: Container Corporation of America, Lindberg Chicago, Ill.

[22] Filed: Jan. 20, 1975 [21] Appl. No.: 542,241 ABSTRACT A molded container has a tubular body closed at its Cl 220/5 R ends by closures integrally formed therewith. The [51] Int. Cl. B65D 7/42 pper closure has penings for filling and emptying Field Of S 5 94 A, 1310- the container. The wall of the container has a central 220/1 R, DIG. 1, DIG. l2; D9/l70, 216, portion formed with indentations and a pair of frusto- R, 95 R conically shaped end portions which diverge axially outwardly from the closure toward the central portion.

[ References Cited A shoulder is formed between the indentations and UNITED STATES PATENTS the end portion of the wall to facilitate lifting of the 3,294,271 12/1966 Armbruster 220/5 R commer- 3,647,110 3/1972 Hammes 220/72 FOREIGN PATENTS OR APPLICATIONS 1 Clam, 5 D'awmg F'gures 846,541 8/1960 United Kingdom 206/509 3 32 i i4 1 so I n 36 /26 l 1 I l i 10 \b l I I I 26 26 U.S. Patent Dec. 23, 1975 3,927,790

aa-- a2 MOLDED CONTAINER BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a molded container, and more particularly, to a unitary molded container having improved lifting and rolling features.

2. The Prior Art Heretofore, molded containers had been made with cylindrical walls and were not susceptible to easy lifting by engagement of the wall. Rather, containers had to be lifted by engagement of their bottoms with blades of a lift truck or the like. The rolling resistance of such containers was also very substantial since practically the entire wall made contact with the surface on which the container was being rolled, thus making the rolling quite difficult.

SUMMARY OF THE INVENTION The present invention overcomes the disadvantages of the prior art and provides a novel container which has a wall integrally formed with top and bottom closures. The wall has a central portion formed with one or more indentations and frusto-conical end portions. The end portions diverge axially outwardly from the closures toward central portion of the wall and form a shoulder with the indentation to facilitate engagement thereof by a blade of a lift truck, or the like, for lifting the container. The edge areas on the end portions of the wall immediately adjacent the central portion of the wall act as rolling hoops when the container is rolled on its side diminishing the heretofore experienced rolling resistance of containers known in the art.

THE DRAWING FIG. 1 is a side elevational view of a container showing the present invention;

FIG. 2 is a top plan view of a container shown in FIG.

FIG. 3 is a schematic view showing the container of FIG. 1 being lifted;

FIG. 4 is a schematic view showing the container in a tilted position; and

FIG. 5 is a view showing the container positioned on its side.

Referring now to the drawing, more particularly to FIGS. 1 and 2, there is shown a molded container, generally designated 10. The container is a drum and may be formed from plastic or the like.

The container has a tubular body which includes a continuous wall 12 closed at its ends by respective end closure members, namely a top end closure 14 and a bottom end closure 16. The end closures are integrally formed with the wall and present a unitary construction of a closed container.

The wall 12 has a central portion 18 and a pair of frusto-conically shaped end portions 20 which diverge axially outwardly from the end closures 14 and 16, respectively, toward the central portion 18.

The central portion 18 of the wall 12 has flattened indentations 22 each of which forms a shoulder 24 with the end portion 20 of the wall 12. The indentations are spaced about the wall in such manner that at least two of said indentations are disposed in planes separated from each other by 180 and paralleling the major, or vertical, axis (not shown) of the container.

The indentations 22 and shoulders 24 provide convenient lifting areas engageable by blades 55 of a fork lift truck, or the like, as best seen in FIGS. 3 through 5.

Referring now to FIG. 3, there is shown the container 10 being lifted from a platform or floor 51 by engagement of blades 55 of a lift truck (not shown) or the like with the shoulder 24.

In FIG. 4, the indentations 22 are engaged by flat areas of the blades 55, or the like, and the container is lifted and tilted at the same time. The blades 55 exert a pressure against the indentations 22 thereby maintaining the container firmly in their grasp.

FIG. 5 shows the container positioned on its side after being lifted and tilted as heretofore described. The container contacts the platform or floor 51 by edge areas 26 on the circumference of the end portions 20 of the wall 12, as shown. The container can be rolled with relative ease since the edge areas 26 act as rolling hoops and reduce rolling resistance of the container. Heretofore, containers made without edge areas of the type described here, were difficult to roll due to substantial rolling resistance presented by contact of the substantially entire wall of the container with the surface on which the container is being rolled. The edge areas greatly diminish the area of contact between the container and the floor, or the like, on which the container is rolled, thus reducing the rolling friction.

Referring back to FIGS. 1 and 2, it will be seen that the top 14 of the container is formed with a pair of apertures 28 and 30 for filling and emptying the container. The apertures have threaded upstanding flanges 32 and 34, resepctively, engageable by threaded covers (not shown) for closing the same.

The top closure member 14 is formed with a plurality of upstanding ridges 36 disposed in circumferentially spaced arrangement about the periphery thereof and in close proximity to the edge of the closure 14. The ridges provide protection for closures secured to threaded apertures 28 and 30. The inside annular surface of the ridge 36 provides a surface for a person or a hand truck to grasp the container. The spaces between the ridges form water run-off areas.

The bottom closure member 16 has a plurality of depressions 38 which are engageable by users hand when manually handling the container, emptying it, or using the same with drum slings or the like.

We claim:

1. A unitary molded container comprising:

a. a tubular body having a continuous wall closed at its top and bottom ends by respective top and bottom closure members integrally formed with said wall;

b. said wall having a central portion and a pair of frustoconically shaped end portions diverging axially outwardly from said closure members toward said central portion;

c. a pair of apertures in said top closure member to facilitate filling and emptying said container;

d. said wall having at least a pair of substantially flat indentations in said central portion forming shoulders with each of said end portions to facilitate lifting said container;

e. said indentations of a pair being disposed in the planes separated by from each other and paralleling the major axis of said container.

I I I I l

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3294271 *Jul 5, 1962Dec 27, 1966Armbruster FritzPlastic barrel
US3647110 *Apr 6, 1970Mar 7, 1972Mauser KgMolded barrel
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4094432 *Feb 9, 1977Jun 13, 1978Bergen Barrel & Drum Co.Industrial drums
US4169537 *Mar 22, 1978Oct 2, 1979Centennial Plastics Co., Inc.Storage drum
US4175670 *Mar 22, 1978Nov 27, 1979Reynolds Metals CompanyContainer construction
US4264016 *Mar 13, 1978Apr 28, 1981Hedwin CorporationPlastic drums and drum assemblies with preformed inserts
US4732292 *May 5, 1981Mar 22, 1988Schmalbach-Lubeca GmbhFlexible bottom profile for drawn and ironed beverage can
US4779754 *Jul 15, 1987Oct 25, 1988Ecolab Inc.Draining lid
US4890756 *Aug 15, 1988Jan 2, 1990Hoover Group, Inc.Cylindrical tank with flared upper end
US4903852 *Jan 25, 1989Feb 27, 1990Mitsui Petrochemical Industries, Ltd.Plastics container
US5449087 *Sep 8, 1993Sep 12, 1995Sonoco Products CompanyMolded plastic drum
US5482180 *Jan 19, 1994Jan 9, 1996The Heil CompanyGripping apparatus for omnifarious containers
US5543107 *Mar 9, 1995Aug 6, 1996Sonoco Products CompanyBlow molding a closed plastic drum including two speed compression molding of an integral handling ring
US5755353 *Jun 16, 1994May 26, 1998Russell-Stanley CorporationSteel drum with flattened rolling hoops
US6024245 *Sep 27, 1994Feb 15, 2000Greif Bros. Corp. Of Ohio, Inc.One-piece blow-molded closed plastic drum with handling ring and method of molding same
US6026886 *Apr 6, 1999Feb 22, 2000Diamond-Martinez; Deirdre A.Window covering
US6026980 *May 12, 1999Feb 22, 2000Greif Bros. Corp. Of Ohio, Inc.One-piece blow-molded closed plastic drum with handling ring and method of molding same
US8720723 *Mar 9, 2012May 13, 2014Glenn MorrisModular rainwater storage tank system
US9084920Dec 7, 2011Jul 21, 2015Scott E. AndochickGolf club carrying case
DE2733284A1 *Jul 22, 1977Feb 9, 1978Snyder Ind IncKunststoffass
DE3819912A1 *Jun 11, 1988Dec 14, 1989Schuetz Werke Gmbh Co KgBunged barrel
WO1990015757A1 *Apr 13, 1990Dec 27, 1990Jr Johanson, Inc.Modular mass-flow bin
Classifications
U.S. Classification220/601, 220/675, 220/661, 220/649, 220/DIG.100
International ClassificationB65D1/14
Cooperative ClassificationY10S220/01, B65D1/14
European ClassificationB65D1/14
Legal Events
DateCodeEventDescription
Nov 26, 1986ASAssignment
Owner name: BANK OF NOVA SCOTIA, THE
Owner name: BANKERS TRUST COMPANY, 280 PARK AVENUE, NEW YORK,
Owner name: CHEMICAL BANK
Owner name: MANUFACTURERS HANOVER TRUST COMPANY
Free format text: SECURITY INTEREST;ASSIGNOR:CONTAINER CORPORATION OF AMERICA;REEL/FRAME:004858/0656
Effective date: 19860930
Owner name: NATIONAL WESTMINSTER BANK PLC