WO1991017080A1 - Aileron a angle variable - Google Patents
Aileron a angle variable Download PDFInfo
- Publication number
- WO1991017080A1 WO1991017080A1 PCT/AU1991/000174 AU9100174W WO9117080A1 WO 1991017080 A1 WO1991017080 A1 WO 1991017080A1 AU 9100174 W AU9100174 W AU 9100174W WO 9117080 A1 WO9117080 A1 WO 9117080A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- section
- fin
- root
- box
- sleeve
- Prior art date
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
- B63B32/60—Board appendages, e.g. fins, hydrofoils or centre boards
- B63B32/66—Arrangements for fixation to the board, e.g. fin boxes or foil boxes
Definitions
- VARIABLE ANGLE FIN Background Art This invention relates to fins used on surf boards and similar craft.
- Many recreational water craft such as surf boards and sail boards are required to be manoeuvrable to varying responsive degrees according to water, wave and wind conditions and the desires of the moment of the user.
- surf boards for instance include multiple fins arranged to the rear of the board symmetrically about its centre line and movably adjustable for and aft of the board. They are always set at some predetermined fin inclination angle, typically at an acute outward angle relative to the board undersurf ce. Disclosure of Invention
- the present invention sets out to provide a fin which can be set at adjustable fin inclination angles.
- the present invention may be said to consist in a fin and attachment assembly wherein the attachment is rigidly fixable to an underside of a water craft and includes a receiving section and the fin includes a root section shaped correspondingly to the receiving section so that it can be releasably, rigidly fixed to the attachment at selectable fin inclination angles.
- the fin is fixedly movable in the attachment in a line within a plane of the fin.
- the attachment is fixed to an underside of the water craft so that the plane of the fin is aligned approximately longitudinally of the water craft centre line, in some cases the attachment might be fixed to the water craft to provide a small toe in angle of the fin.
- the root is of a generally circular cross-section constant along its length and the attachment includes a correspondingly sized cylindrical hollow defined in part between two sections relatively movable by clamping means so as to releasably clamp the root section within the hollow.
- the fin root is preferably expandable and retractable so as to effect the releasable clamping action.
- An alternative arrangement provides a splined root and correspondingly cross-sectioned receiving section such that the fin may be inserted into the attachment in a selected any one of a plurality of orientations to effect a selected any one of a corresponding number of fin inclination angles.
- the fin and attachment assembly are well adapted for use as a steering or stabilising fin of a surf board, sail board or similar.
- Fig. 1 is a cross-sectional sketch of a fin in two possible positions within a fin box, in accordance with the invention
- Fig. 2 is a cross-sectional sketch view of the fin box of Fig. 1;
- Fig. 3 is a side sketch view of an alternative, partially disassembled, embodiment of the invention.
- Fig. 4 illustrates two portions of the embodiment of Fig. 3 in more detail
- Fig. 5 shows in cross-section a modified fin similar in part to the fin shown in Fig. 1; and Fig. 6 shows in a partially disassembled state an alternative embodiment of the -invention.
- Fig. 1 shows a surf board fin 1 which has a generally cylindrical sectioned root portion 2 and a hydrodynamic foil section 3.
- the fin 1 engages by way of the root portion 2 a hollow section of a two-part fin box 4.
- the two parts of the fin box 4 include a major body section 5, adapted to be fixed within a correspondingly sized hollow portion of the surf board underside in the conventional manner.
- the fin 1 while released, may be rotated to any inclination angle A up to that shown at position 3a (in dotted outline).
- FIG. 2 Further detail of the fin box 4 is shown in Fig. 2. Sections 5 and 6 of the fin box are secured together by a clamp device 7 actuable by a recessed lever device 8.
- the free end of the attachment 7 is fixed within section 5 while the lever device 8 has a cam action on attachment device 7 so as to draw sections 6 and 5 together in a manner which closes down the cross-sectional size of the generally cylindrical hollow section 9. It is within this hollow section 9 that the root portion 2 of the fin 1 normally resides and the contraction of the cross-sectional width thereby provides the required clamping action.
- Fig. 3 shows an alternative embodiment in which the root section 2 of the fin 1 is of a splined cross-section and slides into a mating intermediate section 12, which in turn is attached within a conventional fin box 11.
- the intermediate section 12 and fin root portion 2 include respective lands 13 and 14, each with a through hole which are aligned once installation is complete and which accept a screw device 15 which threadably engages a conventional clamping plate 16.
- the clamping plate 16 fits within the conventional side grooves of the fin box 11.
- Fig. 4 shows the respective cross-sections of the root portion 2 and intermediate portion 12 of the Fig. 3 embodiment of the device.
- the non-circular but still rotationally symmetrical cross-section allows rotational free mounting of the two components in a number of selectable, finitely angled apart, orientations.
- Fig. 5 shows a fin 1 that can be considered to be a modification of the fin 1 of Fig. 1. It. includes a generally circular cross-section root 2 but in this case the root 2 comprise half sections 17 and 18 which can be forcibly screwed apart by screw 19 engaged in plate 20. Plate 20 is fixed to, or at least held in place below the surface of half section 18.
- the root 2 With the half sections 17 and 18 closely positioned the root 2 is placed in the hollow 9 of the fin box 4 (Fig 2).
- the root 2 is captured in the hollow cavity 9 by tightening the attachment devices 7 but is still free to move until the securing screw 19 is turned down firmly. This forces apart the halves 17 and 18 and effects the clamping action between the root 2 and fin box 4, thus fixing the fin in position.
- FIG. 6 shows another example of the invention.
- a fin 1 has a root section 2 shaped in. cross section to provide a segment of a circle, the complimentary segment shape being provided by a wedge collar or sleeve 21 slidable down over the fin 1.
- the root section 2 fits up within a recess of the collar 21. Longitudinally the root section 2 is "T" shaped to provide overhanging ends 26 which stop the collar 21.
- Clamping screws 19 and co-operative nuts 20 are used to force apart the root section 2 and collar wedge 21 once they have been slid into a mating box adapter 22. Forcing section 2 and wedge 21 apart wedges the fin 1 into the set position within the circular groove of the adaptor box 22.
- a coffin 23 is attached in and sealed to a corresponding cavity in the bottom of the board 25, in the same way as a conventional fin box, and, typically by screws 24, the adaptor 22 is fixed within the coffin 23.
- screw 19 the fin 1 can be tilted and/or moved longitudinally in adaptor box 22 for performance adjustment purposes or removed completely by removing screws 24 and the adaptor box 22 as a whole.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
Un aileron (1), utilisé dans une petite embarcation (25) telle une planche de surf, fournit un angle réglable A à l'axe transversal de l'embarcation (25). L'aileron (1) est verrouillé par friction ou mécaniquement dans une position choisie à partir d'un certain nombre de positions angulaires possibles. Un modèle comprend un boîtier (22) placé dans l'embarcation (25) et doté d'une rainure à section circulaire (9) qui loge étroitement une partie intermédiaire cylindrique (21). L'aileron se fixe étroitement dans une fente ménagée dans la partie (21) et l'ensemble est fortement fixé par des vis (19) qui reserrent la base (2) de l'aileron (1) contre le fond de la rainure (9).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPJ989390 | 1990-04-30 | ||
AUPJ9893 | 1990-04-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1991017080A1 true WO1991017080A1 (fr) | 1991-11-14 |
Family
ID=3774631
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU1991/000174 WO1991017080A1 (fr) | 1990-04-30 | 1991-04-30 | Aileron a angle variable |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO1991017080A1 (fr) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995031366A1 (fr) * | 1994-05-17 | 1995-11-23 | Robert John Waters | Unite d'aileron |
US5664979A (en) * | 1995-09-27 | 1997-09-09 | Benham; Roger A. | Pivoting fin for watercraft |
US5813890A (en) * | 1996-09-12 | 1998-09-29 | Benham; Roger A. | Pivoting fin with elastic bias |
AU706925B3 (en) * | 1998-09-11 | 1999-07-01 | Gregory Mark Webber | Support assembly |
WO2001070565A1 (fr) * | 2000-03-22 | 2001-09-27 | Low Pressure Systems Pty Ltd. | Systeme de derives amovibles |
US6386933B1 (en) * | 1999-09-30 | 2002-05-14 | Stephen S. Rewald | Enhanced customizable surfboards with adjustable fins and methods for making the same |
WO2002047971A1 (fr) * | 2000-12-11 | 2002-06-20 | Rosebank Holdings Pty Ltd | Aile pour planche autoreglable |
US6807920B1 (en) * | 2002-12-03 | 2004-10-26 | Polaris Industries Inc. | Personal watercraft having adjustable angle sponsons |
WO2005105566A1 (fr) * | 2004-04-30 | 2005-11-10 | Berenguer Monzon Pedro | Dispositif articule permettant de fixer les ailerons aux planches de glisse rigides |
WO2007045059A1 (fr) * | 2005-10-18 | 2007-04-26 | Antonio Garcia | Caracteristiques de construction relatives au creux de fixation de la derive sur des planches de surf |
WO2007048172A1 (fr) * | 2005-10-24 | 2007-05-03 | Aussie Assets Pty Limited | Systeme de derive pour embarcation |
WO2009076706A1 (fr) * | 2007-12-14 | 2009-06-25 | Michael John Hort | Caisson de dérive |
US8408958B2 (en) | 2010-01-08 | 2013-04-02 | Roger A. Benham | Pivoting fin with securement |
WO2014021860A1 (fr) * | 2012-07-31 | 2014-02-06 | Briel Kenneth W | Système de dérive ajustable |
US9688365B2 (en) | 2012-07-09 | 2017-06-27 | Fin Control Systems Pty Limited | Fin plug for water craft |
US9957021B2 (en) | 2012-11-14 | 2018-05-01 | Fin Control Systems Pty. Limited | Fin plug for a water craft |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH603196A5 (fr) * | 1976-10-22 | 1978-08-15 | Mistral Windsurfing Ag | |
AU502986B2 (en) * | 1976-04-01 | 1979-08-16 | B A Kelly | Improvement in and relating to sailing vessels |
AU539918B2 (en) * | 1980-07-31 | 1984-10-25 | Hanimex Pty. Ltd. | Mounting means for surfboard fin |
AU607418B2 (en) * | 1987-04-13 | 1991-03-07 | Christopher James Beacham | Flanged fin for watercraft |
-
1991
- 1991-04-30 WO PCT/AU1991/000174 patent/WO1991017080A1/fr unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU502986B2 (en) * | 1976-04-01 | 1979-08-16 | B A Kelly | Improvement in and relating to sailing vessels |
CH603196A5 (fr) * | 1976-10-22 | 1978-08-15 | Mistral Windsurfing Ag | |
AU539918B2 (en) * | 1980-07-31 | 1984-10-25 | Hanimex Pty. Ltd. | Mounting means for surfboard fin |
AU607418B2 (en) * | 1987-04-13 | 1991-03-07 | Christopher James Beacham | Flanged fin for watercraft |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995031366A1 (fr) * | 1994-05-17 | 1995-11-23 | Robert John Waters | Unite d'aileron |
US5664979A (en) * | 1995-09-27 | 1997-09-09 | Benham; Roger A. | Pivoting fin for watercraft |
AU702206B2 (en) * | 1995-09-27 | 1999-02-18 | Roger A. Benham | Pivoting fin for watercraft |
US5813890A (en) * | 1996-09-12 | 1998-09-29 | Benham; Roger A. | Pivoting fin with elastic bias |
AU706925B3 (en) * | 1998-09-11 | 1999-07-01 | Gregory Mark Webber | Support assembly |
US6386933B1 (en) * | 1999-09-30 | 2002-05-14 | Stephen S. Rewald | Enhanced customizable surfboards with adjustable fins and methods for making the same |
WO2001070565A1 (fr) * | 2000-03-22 | 2001-09-27 | Low Pressure Systems Pty Ltd. | Systeme de derives amovibles |
GB2376922A (en) * | 2000-03-22 | 2002-12-31 | Low Pressure Systems Pty Ltd | Removable fin system |
GB2376922B (en) * | 2000-03-22 | 2004-02-11 | Low Pressure Systems Pty Ltd | Removable fin system |
US6916220B2 (en) * | 2000-03-22 | 2005-07-12 | Low Pressure Systems Pty, Ltd. | Removable fin system |
WO2002047971A1 (fr) * | 2000-12-11 | 2002-06-20 | Rosebank Holdings Pty Ltd | Aile pour planche autoreglable |
US6807920B1 (en) * | 2002-12-03 | 2004-10-26 | Polaris Industries Inc. | Personal watercraft having adjustable angle sponsons |
WO2005105566A1 (fr) * | 2004-04-30 | 2005-11-10 | Berenguer Monzon Pedro | Dispositif articule permettant de fixer les ailerons aux planches de glisse rigides |
WO2007045059A1 (fr) * | 2005-10-18 | 2007-04-26 | Antonio Garcia | Caracteristiques de construction relatives au creux de fixation de la derive sur des planches de surf |
WO2007048172A1 (fr) * | 2005-10-24 | 2007-05-03 | Aussie Assets Pty Limited | Systeme de derive pour embarcation |
AU2006308493B2 (en) * | 2005-10-24 | 2009-06-04 | Aussie Assets Pty Limited | A watercraft fin system |
WO2009076706A1 (fr) * | 2007-12-14 | 2009-06-25 | Michael John Hort | Caisson de dérive |
US8465334B2 (en) | 2007-12-14 | 2013-06-18 | Origin Fin Systems Pty Ltd. | Fin box |
US8408958B2 (en) | 2010-01-08 | 2013-04-02 | Roger A. Benham | Pivoting fin with securement |
US9688365B2 (en) | 2012-07-09 | 2017-06-27 | Fin Control Systems Pty Limited | Fin plug for water craft |
US9862467B2 (en) | 2012-07-09 | 2018-01-09 | Fin Control Systems Pty Limited | Securing mechanism for water craft fin |
US10377452B2 (en) | 2012-07-09 | 2019-08-13 | Fin Control Systems Pty Limited | Fin plug for water craft |
WO2014021860A1 (fr) * | 2012-07-31 | 2014-02-06 | Briel Kenneth W | Système de dérive ajustable |
US9957021B2 (en) | 2012-11-14 | 2018-05-01 | Fin Control Systems Pty. Limited | Fin plug for a water craft |
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