WO2007130700A3 - Surfboard fin system - Google Patents

Surfboard fin system Download PDF

Info

Publication number
WO2007130700A3
WO2007130700A3 PCT/US2007/060401 US2007060401W WO2007130700A3 WO 2007130700 A3 WO2007130700 A3 WO 2007130700A3 US 2007060401 W US2007060401 W US 2007060401W WO 2007130700 A3 WO2007130700 A3 WO 2007130700A3
Authority
WO
WIPO (PCT)
Prior art keywords
fin system
surfboard
hydrofoil
generally horizontal
surfboard fin
Prior art date
Application number
PCT/US2007/060401
Other languages
French (fr)
Other versions
WO2007130700A2 (en
Inventor
Kenneth E Schmidt
Original Assignee
Kenneth E Schmidt
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 Kenneth E Schmidt filed Critical Kenneth E Schmidt
Publication of WO2007130700A2 publication Critical patent/WO2007130700A2/en
Publication of WO2007130700A3 publication Critical patent/WO2007130700A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/60—Board appendages, e.g. fins, hydrofoils or centre boards
    • B63B32/64—Adjustable, e.g. by adding sections, by removing sections or by changing orientation or profile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/40—Twintip boards; Wakeboards; Surfboards; Windsurfing boards; Paddle boards, e.g. SUP boards; Accessories specially adapted therefor

Abstract

The present invention relates to a surfboard fin system which includes a generally horizontal hydrofoil intersecting or connecting with one or more vertical fins. The generally horizontal hydrofoil of the invention is designed using principles of hydrodynamics, that is, the forces generated by the flow of water over a hydrofoil or wing, to create a force that pulls downward on the fin system and, in turn, downward on the tail end of the water planing hull or surfboard.
PCT/US2007/060401 2006-05-05 2007-01-11 Surfboard fin system WO2007130700A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/418,703 2006-05-05
US11/418,703 US20070259579A1 (en) 2006-05-05 2006-05-05 Surfboard fin system

Publications (2)

Publication Number Publication Date
WO2007130700A2 WO2007130700A2 (en) 2007-11-15
WO2007130700A3 true WO2007130700A3 (en) 2008-07-24

Family

ID=38661739

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/060401 WO2007130700A2 (en) 2006-05-05 2007-01-11 Surfboard fin system

Country Status (2)

Country Link
US (1) US20070259579A1 (en)
WO (1) WO2007130700A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110030600A1 (en) * 2001-05-31 2011-02-10 Keller John H Sailboard with slotted winglets
US8083560B2 (en) 2009-06-05 2011-12-27 Foulke Robert W Pivotal surfboard fin assembly
US20120208415A1 (en) * 2009-10-15 2012-08-16 Foilz Pty Ltd Integral foils for surf craft fins
US20160318587A1 (en) * 2013-12-24 2016-11-03 Leading Edge Surfboards Pty Ltd Surfcraft Fin Arrangement
US20180265174A1 (en) * 2017-03-14 2018-09-20 Flying Fin Systems Pty Ltd Fins with improved fluid dynamic properties
US10647385B2 (en) 2017-08-29 2020-05-12 John H. Keller Advances in watercraft hull lift, efficiency, and reduced hump drag with increased stability

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5136961A (en) * 1989-12-21 1992-08-11 Follett Harold E Hydroplaning hydrofoil/airfoil structures and amphibious and aquatic craft
US5309859A (en) * 1993-04-13 1994-05-10 Miller Richard T Hydrofoil device
US20040092180A1 (en) * 2002-11-07 2004-05-13 Turkington Britt Keith Surfboard fin
US20070093154A1 (en) * 2005-10-25 2007-04-26 Simpson Douglas J High-lift, low drag fin for surfboard and other watercraft.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3747138A (en) * 1970-10-26 1973-07-24 D Morgan Hydrofoil surfboards
US4487152A (en) * 1974-06-24 1984-12-11 Wilfred Larson Boat stabilizer
US4193366A (en) * 1978-03-27 1980-03-18 Salminen Reijo K Sailing boat and method of operating the same
US4320546A (en) * 1979-07-23 1982-03-23 Knox Carleton R Surfboard
JPS6232980A (en) * 1985-07-31 1987-02-12 ア−ネスト・フ−フナ−グル Wave riding ski
WO1988007883A1 (en) * 1987-04-13 1988-10-20 Christopher James Beacham Flanged fin for watercraft
US5057045A (en) * 1990-11-09 1991-10-15 Myers James R Water ski brake
US6746292B2 (en) * 2002-10-09 2004-06-08 David G. Panzer Bottom fin for a watersports board

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5136961A (en) * 1989-12-21 1992-08-11 Follett Harold E Hydroplaning hydrofoil/airfoil structures and amphibious and aquatic craft
US5309859A (en) * 1993-04-13 1994-05-10 Miller Richard T Hydrofoil device
US20040092180A1 (en) * 2002-11-07 2004-05-13 Turkington Britt Keith Surfboard fin
US20070093154A1 (en) * 2005-10-25 2007-04-26 Simpson Douglas J High-lift, low drag fin for surfboard and other watercraft.

Also Published As

Publication number Publication date
WO2007130700A2 (en) 2007-11-15
US20070259579A1 (en) 2007-11-08

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