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Publication numberUS2968272 A
Publication typeGrant
Publication dateJan 17, 1961
Filing dateApr 10, 1958
Priority dateApr 11, 1957
Publication numberUS 2968272 A, US 2968272A, US-A-2968272, US2968272 A, US2968272A
InventorsAnders Berglund Ulf Erik
Original AssigneeAnders Berglund Ulf Erik
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Flexible barge
US 2968272 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Jan. 17, 1961 v u. E. A. BI-IIIQGLUND FLEXIBLE BARGE Filed April 10, 1958 ULF E A BERGLUND.

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' Arrow/5V5 United States Patent FLEXIBLE BARGE Ulf Erik Anders Berglund, Almnas egendom, Hi0, Sweden Filed Apr. 10, 1958, Ser. No. 727,730

Claims priority, application Sweden Apr. 11, 1957 2 Claims. (Cl. 114-74) This invention relates to means for transporting liquids by sea, said means consisting of a collapsible container of liquid-impermeable material for accommodating the liquids. The principal object of the invention is to provide a container which is preferably essentially teardrop-shaped in expanded condition and which is adapted to be rotated during transport to brace the container or make it more rigid. The rotation makes the container more rigid by reason of the centrifugal force of the liquid so that a bracing of the container is dispensed with, it is ensured that even at heavy sea the container will bore itself through the waves. The containers should be so large that considerable quantities of liquid, e.g. oil, can be towed at low cost across the sea at the normal speed of tankers. The oil-filled containers may even be towed under water by submarine.

Further features of the invention and the advantages gained thereby will become apparent from the following description, reference being had to the accompanying drawing, which diagrammatically illustrates an embodiment of the means according to the invention.

In the expanded condition said means consists of a modified teardrop-shaped collapsible bag 1 having a pointed front and rear end and of plastic material for accommodating the liquid, e.g. oil. The bag 1 which is intended to be towed by a ship is provided at its front end 2 with a towing hawser 3 which is secured to the container 1 by a swivel connection 2' so as not to partake in the rotation of the container 1.

2,968,272 Patented Jan. 17, 1961 The rotation of the collapsible bag 1 of plastic material in the surrounding water 4 can be, brought about in many different ways. According to the preferred embodiment illustrated in the drawing, the bag 1 of plastic material is provided with helically extending fins 5 or the like which are adapted to make the container rotate during transport. The fins 5 which may preferably consist of plastic material suitably extend from the front end 2 of the container to the rear end 6 thereof. The fins 5 also serve as protection for the container 1 proper when it collides with other floating objects.

As will appear from the drawing the relatively exposed front end 2 of the plastic bag 1 is made from a stronger material than the remaining container 1.

The wall of the container is provided with a closable opening (not shown) and the container is loaded and unloaded by pumping liquid into and out of the container through a hose or pipe inserted into the container through said opening.

While the invention has been described in a preferred embodiment in the foregoing, it is understood that it is not limited thereto, for many modifications may be re sorted to within the scope of the appendant claims.

What I claim and desire to secure by Letters Patent 1. For transporting liquids by sea, a cargo container consisting essentially of a collapsible bag which in the expanded position has a modified teardrop-shape and is pointed on both ends, and fins on said b-ag extending helically along the surface of said bag for causing it to rotate when it is moved through the sea.

2. A cargo container as claimed in claim 1 in which said fins extend from the front to the rear of said bag.

References Cited in the file of this patent UNITED STATES PATENTS 575,907 Scheubeck Jan. 26, 1897 1,301,738 Potter Apr. 22, 1919 1,773,069 Walker Aug. 12, 1930 2,371,404 Mumford Mar. 13, 1945 2,391,926 Scott Jan. 1, 1946 2,492,699 I-louwink Dec. 27, 1949

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US575907 *Mar 9, 1896Jan 26, 1897 Submarine vessel
US1301738 *Oct 7, 1915Apr 22, 1919William Woodburn PotterSubmergible and towable supply-base.
US1773069 *Dec 7, 1928Aug 12, 1930Jeffery WalkerRotator for ship logs
US2371404 *Sep 15, 1942Mar 13, 1945James Mumford Ivor RossSubmersible container
US2391926 *Jan 4, 1943Jan 1, 1946Edmiston Scott WilliamNonrigid barge
US2492699 *Jun 26, 1947Dec 27, 1949Rubber StichtingFlexible bag for transporting cargo on water
Referenced by
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US6047655 *Feb 5, 1997Apr 11, 2000Alta Plan Consultants Ltd.Flexible barge
US6330865 *Aug 12, 1999Dec 18, 2001Dalton Holdings LimitedFlexible barge
US6675734Jul 18, 2001Jan 13, 2004Albany International Corp.Spiral formed flexible fluid containment vessel
US6718896Oct 30, 2001Apr 13, 2004Albany International Corp.Fabric structure for a flexible fluid containment vessel
US6739274Aug 3, 2001May 25, 2004Albany International Corp.End portions for a flexible fluid containment vessel and a method of making the same
US6832571Oct 30, 2001Dec 21, 2004Albany International Corp.Segment formed flexible fluid containment vessel
US6860218Apr 11, 2001Mar 1, 2005Albany International Corp.Flexible fluid containment vessel
US7024748Nov 11, 2004Apr 11, 2006Albany International Corp.Segment formed flexible fluid containment vessel
US7107921Oct 30, 2001Sep 19, 2006Albany International Corp.End portion for a flexible fluid containment vessel and a method of making the same
US7308862Aug 7, 2001Dec 18, 2007Albany International Corp.Coating for a flexible fluid containment vessel and a method of making the same
US7775171Jan 21, 2003Aug 17, 2010Albany International Corp.Flexible fluid containment vessel featuring a keel-like seam
U.S. Classification114/74.00R, D12/308, 114/74.00T
International ClassificationB63B35/28, B63B35/00
Cooperative ClassificationB63B35/285
European ClassificationB63B35/28F