IL126302A0 - Surface effect vessel hull - Google Patents

Surface effect vessel hull

Info

Publication number
IL126302A0
IL126302A0 IL12630297A IL12630297A IL126302A0 IL 126302 A0 IL126302 A0 IL 126302A0 IL 12630297 A IL12630297 A IL 12630297A IL 12630297 A IL12630297 A IL 12630297A IL 126302 A0 IL126302 A0 IL 126302A0
Authority
IL
Israel
Prior art keywords
surface effect
vessel hull
effect vessel
shaped
drag
Prior art date
Application number
IL12630297A
Other languages
English (en)
Original Assignee
Harley Howard D
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Harley Howard D filed Critical Harley Howard D
Publication of IL126302A0 publication Critical patent/IL126302A0/xx

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B1/12—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/18—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
    • B63B1/20—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
    • B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
    • B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B2001/005—Deflectors for spray, e.g. for guiding spray generated at the bow of a planing vessel underneath the hull
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/18—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
    • B63B2001/186—Sponsons; Arrangements thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/18—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
    • B63B1/20—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface
    • B63B2001/201—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface divided by longitudinal chines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/18—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
    • B63B1/20—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface
    • B63B2001/202—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface divided by transverse steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/18—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
    • B63B1/20—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface
    • B63B2001/203—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface arranged in semi-catamaran configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/18—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
    • B63B1/20—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface
    • B63B2001/204—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface arranged on multiple hulls
    • B63B2001/205—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface arranged on multiple hulls the hulls being interconnected rigidly
    • B63B2001/206—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface arranged on multiple hulls the hulls being interconnected rigidly comprising two hulls, e.g. catamarans
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/10—Measures concerning design or construction of watercraft hulls

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Ocean & Marine Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Vibration Prevention Devices (AREA)
  • Toys (AREA)
  • Table Devices Or Equipment (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Laminated Bodies (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Helmets And Other Head Coverings (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Soil Working Implements (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Catching Or Destruction (AREA)
IL12630297A 1996-03-21 1997-03-06 Surface effect vessel hull IL126302A0 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/620,117 US5570650A (en) 1996-03-21 1996-03-21 Surface effect vessel hull
PCT/US1997/003390 WO1997034796A1 (en) 1996-03-21 1997-03-06 Surface effect vessel hull

Publications (1)

Publication Number Publication Date
IL126302A0 true IL126302A0 (en) 1999-05-09

Family

ID=24484651

Family Applications (1)

Application Number Title Priority Date Filing Date
IL12630297A IL126302A0 (en) 1996-03-21 1997-03-06 Surface effect vessel hull

Country Status (22)

Country Link
US (1) US5570650A (ru)
EP (1) EP0898543B1 (ru)
JP (1) JP4050319B2 (ru)
KR (1) KR100540335B1 (ru)
CN (1) CN1071665C (ru)
AT (1) ATE232807T1 (ru)
AU (1) AU705766B2 (ru)
BR (1) BR9709294A (ru)
CA (1) CA2249242C (ru)
DE (1) DE69719183T2 (ru)
DK (1) DK0898543T3 (ru)
EA (1) EA000340B1 (ru)
EE (1) EE03558B1 (ru)
ES (1) ES2193354T3 (ru)
HK (1) HK1019218A1 (ru)
IL (1) IL126302A0 (ru)
NO (1) NO984400L (ru)
NZ (1) NZ331956A (ru)
PL (1) PL328945A1 (ru)
PT (1) PT898543E (ru)
TR (1) TR199801873T2 (ru)
WO (1) WO1997034796A1 (ru)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5570650A (en) * 1996-03-21 1996-11-05 Harley; Howard D. Surface effect vessel hull
US6901873B1 (en) 1997-10-09 2005-06-07 Thomas G. Lang Low-drag hydrodynamic surfaces
GB2340080B (en) * 1998-07-29 2001-10-31 Leslie Dilks Jet engine powered boats
US6125781A (en) * 1998-07-31 2000-10-03 White; Ralph Fern Tunnel-hulled boat
GB2350820B (en) * 1999-06-08 2002-01-23 William Francis Pentecost Stable tunnel hull
US6176190B1 (en) 1999-07-12 2001-01-23 John Ozga Suspension system for a speed boat
US6293216B1 (en) 1999-11-16 2001-09-25 Bruce R. Barsumian Surface effect ship (SES) hull configuration having improved high speed performance and handling characteristics
US6604478B2 (en) 1999-11-16 2003-08-12 Bruce R. Barsumian Hull configuration utilizing multiple effects for enhanced speed, range and efficiency
US6293218B1 (en) 2000-08-21 2001-09-25 Ralph Fern White Tunnel-hulled boat
US6406341B1 (en) 2000-11-20 2002-06-18 Hell's Bay Boat Works Co. Shallow draft boat
US6634310B2 (en) * 2002-02-04 2003-10-21 Donald E. Burg High efficiency high speed ship
NO20020867A (no) * 2002-02-22 2003-08-04 Effect Ships Int As Luftputefartøy
US6575106B1 (en) * 2002-04-18 2003-06-10 Advanced Marine Concepts, Llc Air induction system for marine vessel
SI1501719T1 (sl) * 2002-05-07 2008-08-31 Dk Group N A N V Plovilo z zračnimi votlinami s klinasto oblikovanimi votlinami, vzdolžno zamaknjenimi votlinami in krmilnim sredstvom zibanja in postopek gradnje lete
EP1361150A1 (en) * 2002-05-07 2003-11-12 DK Group N.A. N.V. Air cavity vessel with wedge-shaped cavities, longitudinally offset cavities, and roll control means
EP1361152A1 (en) * 2002-05-07 2003-11-12 DK Group N.A. N.V. Air cavity vessel with wedge-shaped cavities, longitudinally offset cavities, and roll control means
US6675736B1 (en) 2002-09-12 2004-01-13 Brunswick Corporation Boat having channels formed in its hull
US6983713B1 (en) * 2003-07-23 2006-01-10 M Ship Co., Llc. Powered watercraft
US7143710B2 (en) * 2003-12-11 2006-12-05 Lang Thomas G Low drag ship hull
US6941888B2 (en) * 2003-12-16 2005-09-13 Roshdy George S. Barsoum Hybrid ship hull
US7104209B1 (en) * 2005-03-15 2006-09-12 Bunnell Alicia A Hybridhull boat system
US20060260527A1 (en) * 2005-04-15 2006-11-23 Ackerbloom Robert N Watercraft hull having a constant flow tunnel and corresponding method
US7299764B1 (en) * 2006-05-09 2007-11-27 Davis Wayne N Boat hull
US20070266921A1 (en) * 2006-05-18 2007-11-22 Peter Brady Multi-hull boat
US7497179B2 (en) * 2006-09-15 2009-03-03 Global Maritime Solutions Quadrapod air assisted catamaran boat or vessel
US8122840B2 (en) 2008-07-02 2012-02-28 Harper Justin A Transom stern hull form and appendages for improved hydrodynamics
US8109221B2 (en) * 2008-08-20 2012-02-07 Aspen Power Catamarans Llc Single drive catamaran hull
US8210116B2 (en) * 2009-09-10 2012-07-03 Navatek, Ltd. Watercraft with hull ventilation
KR101054242B1 (ko) 2009-10-19 2011-08-09 오정택 공기 부양 고속 선박
US8800466B1 (en) 2010-06-23 2014-08-12 Navatek, Ltd. Inflatable watercraft with reinforced panels
CN102658816B (zh) * 2012-05-29 2014-09-10 重庆韵涵船舶技术有限公司 无垫升风扇气垫船
WO2013178018A1 (zh) * 2012-05-29 2013-12-05 重庆韵涵船舶技术有限公司 无垫升风扇气垫船
US9394032B1 (en) * 2012-10-05 2016-07-19 Tige Boats Rear extensions for boats
DE102013013181A1 (de) * 2013-08-07 2015-02-12 Roland Lindinger Formgebundenes Wellensystem zur Widerstandsreduzierung und Erhöhung des Wirkungsgrates des Antriebes / Schraube bei handelsüblichen Schiffsformen (Gleiter / Halbgleiter / Verdränger)
CN103523154A (zh) * 2013-10-30 2014-01-22 青岛科技大学 一种h型减阻船及工作原理
FR3028491A1 (fr) * 2014-11-19 2016-05-20 Daniel Andre Bernard Tollet Navire multicoques a portances hydrodynamique et aerodynamique
CN104943817B (zh) * 2015-07-09 2017-12-01 李峥 一种可提高船舶行进速度的水上滑行装置
US9676450B1 (en) 2016-04-20 2017-06-13 James C. Brignolio Pontoon structure for supporting a boat body
CN106184640B (zh) * 2016-09-18 2018-02-23 江苏科技大学 一种三槽道水面复合快艇
US10160517B1 (en) * 2017-05-04 2018-12-25 Howard D. Harley Watercraft hull with angled keels
US10518843B1 (en) * 2017-10-10 2019-12-31 Morrelli & Melvin Design & Engineering, Inc. Planing hull catamaran for high speed operation in a seaway
CN107719353B (zh) * 2017-11-10 2023-11-28 上海析易船舶技术有限公司 耐波型无垫升风扇气垫船
CN109808827A (zh) * 2019-02-15 2019-05-28 哈尔滨工程大学 一种气泡减阻槽道滑行艇
CN113492946A (zh) * 2021-06-28 2021-10-12 广州船舶及海洋工程设计研究院（中国船舶工业集团公司第六0五研究院） 一种船舶船体型式结构

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR9925E (fr) * 1907-12-23 1909-03-06 Philippe Bunau Varilla Perfectionnement à la construction des navires en vue de réduire la résistance de l'eau à la progression
US1877380A (en) * 1929-11-12 1932-09-13 Edward E Baldwin Marine craft
US3191572A (en) * 1963-08-21 1965-06-29 Wilson Henry Allen Reduced friction hull construction for power boats
US3382833A (en) * 1966-06-08 1968-05-14 Wukowitz Edward High-speed motorboat hull
US3606857A (en) * 1968-06-17 1971-09-21 Charles T Sundquist Marine propulsion systems
US4031841A (en) * 1973-11-23 1977-06-28 Bredt-Kat, Inc. Controlled air film hull for watercraft
US4228752A (en) * 1976-01-02 1980-10-21 Sladek Theodore E Surface effect boat
US5415120A (en) * 1976-11-01 1995-05-16 Burg; Donald E. Multiple hull air ride craft
US4587918A (en) * 1976-11-01 1986-05-13 Burg Donald E Fine entry air ride boat hull
US4392445A (en) 1976-11-01 1983-07-12 Paulette Renee Burg Flexible bow air ride boat hull
US5176095A (en) * 1976-11-01 1993-01-05 Burg Donald E Multiple hull air ride boat
FR2510058A1 (fr) * 1981-07-21 1983-01-28 Vallas Georges Bateau aeroglisseur
US4523536A (en) * 1983-07-01 1985-06-18 Smoot Mark H Energy efficient power driven marine vessel boat
US4574724A (en) * 1984-05-17 1986-03-11 David L. DelNero Boat-hull construction
FR2607098A1 (fr) * 1986-11-24 1988-05-27 Pingon Pierre De Catamaran a effet de surface
US5002004A (en) * 1987-11-11 1991-03-26 Mitsui Engineering & Shipbuilding Co., Ltd. Planing boat
BR8907382A (pt) * 1988-04-19 1991-04-23 Donald E Burg Casco de embarcacao aperfeicoado,membro de proa e membro de vedacao movel posterior
US5570650A (en) * 1996-03-21 1996-11-05 Harley; Howard D. Surface effect vessel hull

Also Published As

Publication number Publication date
JP4050319B2 (ja) 2008-02-20
NO984400D0 (no) 1998-09-21
NZ331956A (en) 1999-01-28
TR199801873T2 (xx) 1998-12-21
EP0898543A4 (en) 1999-09-22
EP0898543A1 (en) 1999-03-03
CN1071665C (zh) 2001-09-26
DK0898543T3 (da) 2003-06-10
KR20000064732A (ko) 2000-11-06
CN1216508A (zh) 1999-05-12
EA000340B1 (ru) 1999-04-29
DE69719183T2 (de) 2004-06-17
PL328945A1 (en) 1999-03-01
EP0898543B1 (en) 2003-02-19
WO1997034796A1 (en) 1997-09-25
AU1986797A (en) 1997-10-10
BR9709294A (pt) 2000-01-11
EE9800359A (et) 1999-04-15
EE03558B1 (et) 2001-12-17
KR100540335B1 (ko) 2007-08-21
EA199800841A1 (ru) 1999-02-25
PT898543E (pt) 2003-07-31
US5570650A (en) 1996-11-05
ATE232807T1 (de) 2003-03-15
HK1019218A1 (en) 2000-01-28
ES2193354T3 (es) 2003-11-01
DE69719183D1 (de) 2003-03-27
CA2249242C (en) 2001-05-15
NO984400L (no) 1998-10-23
JP2000506814A (ja) 2000-06-06
AU705766B2 (en) 1999-06-03
CA2249242A1 (en) 1997-09-25

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Legal Events

Date Code Title Description
FF Patent granted
RH1 Patent not in force
NE Application for restoration - patent lapsed through non-payment of renewal fees (section 60, patents law, 5727-1967)
KB Patent renewed
MM9K Patent not in force due to non-payment of renewal fees