[특허]Rugged foam buoyancy modules and method of manufacture

[미국특허] Rugged foam buoyancy modules and method of manufacture 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-017/01 E21B-017/00
출원번호	US-0294455 (2002-11-14)
발명자 / 주소	Watkins,Lou W.
출원인 / 주소	Cuming Corporation
대리인 / 주소	O'Shea, Getz &
인용정보	피인용 횟수 : 6 인용 특허 : 27

초록 ▼

A buoyancy module comprises a multi-layer outer protective shell that has an exterior surface and an interior surface. A first layer of foam buoyancy material is located adjacent to the interior surface. A second layer of foam buoyancy material that includes macrospheres and syntactic foam is surrounded by the first layer of foam buoyancy material. The multi-layer outer protective shell can include a layer of fiberglass backed by a fibrous plastic liner. In this embodiment, the layer of fiberglass provides the exterior surface of the multi-layer outer protective shell, while the fibrous plastic liner provides the interior surface of the protective shell. The second layer of foam buoyancy material can be a precast material. The precast material can include for example macrospheres and syntactic foam. The first layer of foam buoyancy material is preferably a stronger layer than the second layer of foam buoyancy material. Advantageously, the buoyancy module has a plurality of different layers, wherein the components of greatest strength and density are located on the outside. The multi-component system improves ruggedness of the buoyancy material, and provides increased reinforcement at locations subject to increased bending strengths, and provides a buoyancy module of longer life. In addition the buoyancy module may also include steel support members where bolting loads and other forces are brought to bear when parts are attached.

대표청구항 ▼

What is claimed is: 1. A buoyancy module, comprising: a multi-layer outer protective shell that has an exterior surface and an interior surface; a first layer of foam buoyancy material that is located adjacent to said interior surface; a second layer of foam buoyancy material, that includes macrospheres and syntactic foam that is surrounded by said first layer of foam buoyancy material. 2. The buoyancy module of claim 1, wherein said second layer of foam buoyancy material is precast. 3. The buoyancy module of claim 1, wherein said second layer of foam buoyancy material is precast and includes macrospheres and syntactic foam. 4. The buoyancy module of claim 1, wherein the thickness of said first layer of foam buoyancy material is substantially thinner than the thickness of said second layer of foam buoyancy material. 5. The buoyancy module of claim 1, wherein said multi-layer outer protective shell includes an exterior layer of fiberglass and an interior layer of a fibrous plastic. 6. The buoyancy module of claim 1, wherein said interior surface includes nylon non-woven material. 7. The buoyancy module of claim 1, wherein said interior surface includes nylon matted material having nylon fibers of about one millimeter in diameter. 8. The buoyancy module of claim 7, further comprising a lateral reinforcing member. 9. The buoyancy module of claim 8, wherein said lateral reinforcing member includes a metallic reinforcing member. 10. The buoyancy module of claim 4, wherein said buoyancy module is configured and arranged as a hemi-cylinder. 11. The buoyancy module of claim 1, wherein said multi-layer outer protective shell includes an exterior layer of fiberglass and an interior layer of a metallic material. 12. A subsea buoyancy module, said buoyancy module comprising: a multi-layer protective shell that has an exterior surface and an interior surface, wherein said multi-layer outer protective shell includes, (i) a fiberglass outer layer that provides said exterior surface; (ii) a fibrous plastic layer that provides said interior surface; a first layer of foam buoyancy material that is located adjacent to said interior surface; a second layer of precast foam buoyancy material that is encased by said first layer of foam buoyancy material. 13. The subsea buoyancy module of claim 11, wherein said second layer of precast foam buoyancy material includes blown polyurethane foam. 14. The subsea buoyancy module of claim 11, wherein said second layer of precast foam buoyancy material includes PVC foam. 15. The subsea buoyancy module of claim 11, wherein said second layer of precast foam buoyancy material includes syntactic foam.

이 특허에 인용된 특허 (27) 인용/피인용 타임라인 분석

Copley John R. (Canton MA), Buoyancy materials.
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Cochran William H. (P.O. Box 252 Exeter RI 02822), Buoyant boat with girder box.
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Johnson Frederick M. (Austin TX) Brown James R. (Austin TX) Reitz Rex L. (Austin TX), Construction laminate of plastic foam between paper sheets.
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Vollenweider ; II Edward E. (3181 Big J. Dr. Highland MI 48031), Core for composite structures.
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Allen Forrest J. ; Bush Robert E. ; Gettle Guy L., Deep water riser flotation apparatus.
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Tickner E. Glenn (Coulterville CA) Short Robert E. (Los Gatos CA), Environmentall dispersible syntactic foam.
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Ortloff John E. (Houston TX) Greer Matthew N. (Houston TX) Gardner Terry N. (Houston TX), Fairing for elongated elements.
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Sweetman John A., Fairing for marine risers.
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Creyf Hubert S. G. (Brugge BEX) Du Prez Eddie R. (Brakel BEX), Fire-resistant seating, in particular aircraft seats.
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Bastiaens Alfons (Westerlo BEX) Pauwels Norbert (Herselt BEX), Internal manifold that aids in filling molds.
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Moore Alvin Edward (916 Beach Blvd. Waveland MS 39576), Light-weight buoy.
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Patton Edward Matthew ; Henkener Jerry Allen ; Goland Lawrence Jon ; Rennick Timothy Stewart, Low cost deep water efficient buoyancy.
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Gregory Edward W. (Calgary CAX), Marine production riser system and method of installing same.
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Johnson Arne I. (7400 34th St. South ; Apt. 125 St. Petersburg FL 33711), Marine riser buoyancy assembly.
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Lee George (Monterey Park CA), Method for making buoyancy members.
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Sellstrom Kathy B. (Austin TX), Method for making syntactic foam with improved processing characteristics using a silane coupling agent in combination w.
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Johnson Arne I. (Springfield MA), Method of making syntatic modules.
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Miessler James D. (Westfield MA) Johnson Arne I. (Springfield MA), Method of making syntatic modules.
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Zion Earl M. (Newark OH), Molded composite article and method for making the article.
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Ahrens John R. (Dousman WI), Multidensity foam article and method of preparation.
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Walker ; Raymond W., Offshore well apparatus with a protected production system.
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Pool Paul L. ; Gowan William H., Protection of pipeline joint connections.
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Guesnon Jean (Saint Germain En Laye FRX), Riser for a great water depth.
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Watkins Louie W. (Sharon MA) Miller Stephen C. (Randolph MA), Riser pipe fairing.
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Weingartner Rudolf (Neuhofen a.d. Krems ATX) Moseneder Johann (Grieskirchen ATX) Eder Bernhard (Linz/Donau ATX), Seat with foamed plastic padding and process for its manufacture.
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Watkins Lou W., Subsea pipeline insulation.
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Weinhaus Harold R. (Southfield MI), Water ski constructed with interlocking flanged shells.
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이 특허를 인용한 특허 (6) 인용/피인용 타임라인 분석

Dartford, David William; Williams, Timothy Steven; Tisdale, George William, Energy managing keel joint.
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Welch, David, Floatation collar for protecting and positioning a sensor package.
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Lif, Arne Ingemar; Myhre, Evind; Alvestad, Tor Gunnar, Framework with a buoyant body for a subsea vehicle as well as a method for construction of a framework.
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Mebarkia, Sid A.; Critsinelis, Antonio C. F.; Drew, Dane; Quinney, Michael J.; Wang, Lynn, Lateral buckling mitigation apparatus, methods and systems for use with subsea conduits.
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Pionetti, Francois-Regis; Szyszka, Damien; Chkir, Rami, Rigid material for heat-insulation and/or buoyancy for an underwater pipe.
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Howard, Donald Paul; Summers, Alan Hugh; Reynolds, Jr., Harris Allen; Andrus, Kati Rachelle, Riser floatation with anti-vibration strakes.
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[미국특허] Rugged foam buoyancy modules and method of manufacture 원문보기