GB8829293D0 - Improved keel - Google Patents

Improved keel

Info

Publication number
GB8829293D0
GB8829293D0 GB888829293A GB8829293A GB8829293D0 GB 8829293 D0 GB8829293 D0 GB 8829293D0 GB 888829293 A GB888829293 A GB 888829293A GB 8829293 A GB8829293 A GB 8829293A GB 8829293 D0 GB8829293 D0 GB 8829293D0
Authority
GB
United Kingdom
Prior art keywords
improved keel
keel
improved
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB888829293A
Other versions
GB2226281A (en
GB2226281B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JEFFREYS PETER B
Original Assignee
JEFFREYS PETER B
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 JEFFREYS PETER B filed Critical JEFFREYS PETER B
Priority to GB8829293A priority Critical patent/GB2226281B/en
Publication of GB8829293D0 publication Critical patent/GB8829293D0/en
Priority to DE89313029T priority patent/DE68908860T2/en
Priority to EP89313029A priority patent/EP0373913B1/en
Publication of GB2226281A publication Critical patent/GB2226281A/en
Application granted granted Critical
Publication of GB2226281B publication Critical patent/GB2226281B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/24—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type
    • B63B1/28—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type with movable hydrofoils
    • B63B1/285—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type with movable hydrofoils changing the angle of attack or the lift of the foil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B41/00—Drop keels, e.g. centre boards or side boards ; Collapsible keels, or the like, e.g. telescopically; Longitudinally split hinged keels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B2035/009—Wind propelled vessels comprising arrangements, installations or devices specially adapted therefor, other than wind propulsion arrangements, installations, or devices, such as sails, running rigging, or the like, and other than sailboards or the like or related equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
    • B63B2039/065—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water the foils being pivotal about an axis substantially parallel to the longitudinal axis of the vessel
GB8829293A 1988-12-15 1988-12-15 Improved keel Expired - Lifetime GB2226281B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB8829293A GB2226281B (en) 1988-12-15 1988-12-15 Improved keel
DE89313029T DE68908860T2 (en) 1988-12-15 1989-12-13 Keel.
EP89313029A EP0373913B1 (en) 1988-12-15 1989-12-13 Improved keel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8829293A GB2226281B (en) 1988-12-15 1988-12-15 Improved keel

Publications (3)

Publication Number Publication Date
GB8829293D0 true GB8829293D0 (en) 1989-01-25
GB2226281A GB2226281A (en) 1990-06-27
GB2226281B GB2226281B (en) 1992-12-16

Family

ID=10648549

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8829293A Expired - Lifetime GB2226281B (en) 1988-12-15 1988-12-15 Improved keel

Country Status (3)

Country Link
EP (1) EP0373913B1 (en)
DE (1) DE68908860T2 (en)
GB (1) GB2226281B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5313905A (en) * 1991-05-09 1994-05-24 Calderon Albert A Twin wing sailing yacht
GB2322334A (en) * 1997-02-25 1998-08-26 Stephen James Bryant Twin yacht keels
US10322773B2 (en) 2015-05-19 2019-06-18 Sarah-May Steenkamp Adjustable ballast bulb for a sailing vessel
DE102017209759B4 (en) 2017-06-09 2021-09-23 Ifm Electronic Gmbh Watercraft with adjustable wings

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3179078A (en) * 1962-12-04 1965-04-20 John R Popkin Dual hydrofoil mechanism for sailboats
GB1039592A (en) * 1964-03-03 1966-08-17 Waldemar Graig Device for directional control of dynamically supported watercraft
US3425383A (en) * 1965-08-11 1969-02-04 Paul A Scherer Hydrofoil method and apparatus
US3505968A (en) * 1968-06-19 1970-04-14 Henry Gorman Boat stabilizer
US4193366A (en) * 1978-03-27 1980-03-18 Salminen Reijo K Sailing boat and method of operating the same
DE2947523A1 (en) * 1979-11-26 1981-06-04 Ernst-W. Ing.(grad.) 4400 Münster Zühlke Hinged general-purpose keel with separately spreadable fins - has fin in halves, separately hinged, enclosing short central element
DE2948240A1 (en) * 1979-11-30 1981-07-23 Frank 6246 Glashütten Göldner Hydrofoil arrangement for watercraft - has foils transversely pivoted, angle of tilt controlled via linkage from float
WO1987002641A1 (en) * 1985-11-01 1987-05-07 Lockheed Missiles & Space Company, Inc. High-speed semisubmerged ship maneuvering system
DE3713176A1 (en) * 1987-02-07 1988-08-18 Erich Victora Sailing boat with winged keel
DE3741758A1 (en) * 1987-12-09 1989-06-29 Messerschmitt Boelkow Blohm SAILING YACHT

Also Published As

Publication number Publication date
DE68908860D1 (en) 1993-10-07
GB2226281A (en) 1990-06-27
GB2226281B (en) 1992-12-16
EP0373913B1 (en) 1993-09-01
DE68908860T2 (en) 1994-04-14
EP0373913A1 (en) 1990-06-20

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19941215