WO1990002589A1 - Procede ameliore d'installation d'une derive - Google Patents

Procede ameliore d'installation d'une derive Download PDF

Info

Publication number
WO1990002589A1
WO1990002589A1 PCT/AU1989/000395 AU8900395W WO9002589A1 WO 1990002589 A1 WO1990002589 A1 WO 1990002589A1 AU 8900395 W AU8900395 W AU 8900395W WO 9002589 A1 WO9002589 A1 WO 9002589A1
Authority
WO
WIPO (PCT)
Prior art keywords
fin
board
base
slot
fitting
Prior art date
Application number
PCT/AU1989/000395
Other languages
English (en)
Inventor
Selwyn Charles Burrows
Michael Charles Hopper
Original Assignee
Selwyn Charles Burrows
Michael Charles Hopper
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 Selwyn Charles Burrows, Michael Charles Hopper filed Critical Selwyn Charles Burrows
Publication of WO1990002589A1 publication Critical patent/WO1990002589A1/fr

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
    • B63B32/66—Arrangements for fixation to the board, e.g. fin boxes or foil boxes

Definitions

  • AN IMPROVED FIN FITTING METHOD This invention relates to an improved fin fitting method.
  • the invention is directed to an improved method of fitting fins to surfboards, surf skis, sailboards and the like.
  • board is used to denote an article such as a surfboard, surf ski, sailboard or the like.
  • Fins must be attached to boards with sufficient strength to withstand the forces imparted to the fins in use.
  • the fin is typically fixed by adhesion to the bottom face of the board, or located in a fin box fitted in the bottom of the board.
  • Known fin fitting methods are illustrated schematically in Figs. 1 to 4.
  • a fin 10 is adhered to the fibreglass coating 12 on a foam board 11.
  • adhesive 14 is placed on the base of the fin 10 and the fin is adhered to the unpolished fibreglass surface 12 of the board.
  • Fibreglass rovings or strands and cloth 13 are positioned around the base of the fin as shown in Fig. 2b to provide the required lateral support.
  • the rovings and cloth 13 are then thoroughly wetted with epoxy resin adhering to both the fin 10 and the surface 12, and allowed to set, thereby forming a solid support around the base of the fin as shown in Fig. 2c.
  • the surface around the base of the fin 10 is smoothed with abrasive paper and polished to form the finished product shown in Fig. 2d.
  • a fin 20 is held within a fin box or housing which is located within a groove or slot cut into the board.
  • a groove or slot 23 is first cut into the fibreglass coating 22 and foam 21 of the board as shown in Fig. 2a.
  • A' fin box or housing 24 is then adhered into the groove (Fig. 4b) .
  • a fin 20 having a co-operating base is fitted and held within the fin box or housing 24 with a suitable locking device. Examples of fins mounted in fin boxes can be found in U.S. patents no ⁇ . 4,493,665 and 4,379,703.
  • the present invention provides an improved method of fitting a fin to a board, comprising the steps of:
  • the fin can be fitted to the board after the fibreglass coating has been applied. Separation of the coating and fin fitting processes reduces the time required for both procedures thereby increasing the efficiency of the whole process. As the fin fitting takes place after the sanding and polishing of the fibreglass, these tedious tasks can be performed beforehand with the full use of power tools.
  • the fin does not require a housing or box and the dimensions of the slot(s) or hole(s) are not critical as they are hidden under the flange of the fin.
  • Boards can be made, transported and sold without fins, and the fins can be fitted as per customer's requirements.
  • a single slot is cut into the fibreglass coated board with a router and the base of the fin is inserted into the slot.
  • two or more slots may be formed in the board to receive a corresponding number of tongues formed on the base of the fin.
  • one or more holes may be drilled in the fibreglass coated board to receive respective pins formed on the base of the fin.
  • flanges are provided on opposite sides of the fin, the flanges having a flat underside for abutting the face of the board, and a curved topside for forming a smooth transition between the fin sides and the board.
  • the fin can suitably be made from plastics material, e.g. by injection moulding. However, other materials such as carbon fibre can be used to make the fin.
  • Figs . 5a to 5c illustrate the fin fitting procedure of the preferred embodiment
  • Fig. 6 is a sectional elevational view of a fin fitted in accordance with the preferred embodiment
  • Fig. 7 is a perspective view of the fin of the embodiment of Fig. 5;
  • Fig. 8 is a perspective view of a fin according to another embodiment
  • Fig. 9 is a perspective view of a fin according to yet another embodiment of the invention.
  • the board is first prepared by shaping a foam body into the desired shape.
  • a flat surface corresponding in shape to the fin flanges should preferably be provided on the board to ensure a flush fit between the board and the flanges on the fin (as described hereinafter) .
  • the desired designs and colours can be applied to the board which is then, coated with fibreglass and sanded, typically with a power tool.
  • the finish coat is then applied and polished, typically also with a power tool. When sanding the board, the flat surface should be maintained. Alternatively, the finish coat can be lightly sanded flat in the area where the fin is to be fitted.
  • a slot 32 is marked out on the board and cut into the fibreglass coating 30 and foam body 31 of the board as shown in Fig. 5a.
  • the slot 32 is typically cut with a router tool.
  • Adhesive 38 is applied to the slot 32 and/or the base 36 of a fin 35 as shown in Fig. 5b.
  • the fin 35 is typically made of plastics material, and is provided with a pair of lateral flanges 37 having a flat underside for a flush fit with the board.
  • the topsides of the flanges are curved to provide a smooth transition between the fin 35 and the surface of the board.
  • Adhesive may also be applied to the underside of the flanges 37.
  • the base 36 of the fin is then pushed into position in the groove 32 and excess adhesive is wiped away.
  • the adhesive is allowed to set such that the fin 35 is fixed in position as shown sectionally in Fig. 6. No further sanding or polishing is required as the preformed flanges 37 on the fin 35 provide a smooth transition between fin and board.
  • the flanged base 36 of the fin is adhered both onto and into the board, combining the fixing features of the two prior art fin fitting methods hereinbefore described yet allowing the fin to be fitted after polishing.
  • the adhering of the fin 35 both to the slot and the face of the board gives the fin increased resistance to loads.
  • the tongue or base 36 of the fin anchors the fin against bending and twisting loads applied in the direction A shown in Fig. 6.
  • the flanges 37 also guard against downward loads applied in direction B, especially shock loading incurred when the fin hits obstacles such as rocks, sand, etc.
  • a fin 40 may have a base comprising two tongues 42 which are received in respective slots 41 formed in the board.
  • the tongues/slots are suitably located on either side of the centre strip line of the board.
  • a fin 45 may have a base comprising a plurality of pins 46 which are received in respective holes 47 formed in the board.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)

Abstract

Le procédé amélioré décrit, qui sert à installer une dérive ou un aileron (35) sur une planche (31), permet l'installation de la dérive (35) de façon simple et rapide après que la planche (31) a été recouverte de fibres de verre (30) et polie. La dérive (35) comprend une base (36) pourvue d'une partie d'embase (37). Une fente (32) est ménagée dans la planche et un adhésif (38) est appliqué dans la fente (32) et/ou sur la base (36). La base (36) est ensuite introduite dans la fente (32), de sorte que la partie d'embase (37) bute contre la surface de la planche, l'adhésif (38) pouvant alors durcir. La base peut comporter plusieurs parties saillantes en forme de languettes (42) ou des broches (46) qui s'engagent dans des fentes (41) ou des trous (47) correspondants ménagés dans la planche.
PCT/AU1989/000395 1988-09-14 1989-09-12 Procede ameliore d'installation d'une derive WO1990002589A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPJ0423 1988-09-14
AUPJ042388 1988-09-14

Publications (1)

Publication Number Publication Date
WO1990002589A1 true WO1990002589A1 (fr) 1990-03-22

Family

ID=3773373

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1989/000395 WO1990002589A1 (fr) 1988-09-14 1989-09-12 Procede ameliore d'installation d'une derive

Country Status (1)

Country Link
WO (1) WO1990002589A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2691943A1 (fr) * 1992-03-09 1993-12-10 Fin Control Systems Pty Ltd Système de fixation d'ailerons de surfing à douilles et chevilles.
US5464359A (en) * 1992-03-09 1995-11-07 Fin Control Systems Pty. Limited Surf fin fixing system
US6139383A (en) * 1997-10-27 2000-10-31 Pat-Tech Pty Ltd. Fin assembly
WO2003042031A1 (fr) * 2001-11-13 2003-05-22 Sunbum Pty Ltd Systeme de derive de surf amovible et reglable
US6821173B2 (en) 2001-11-13 2004-11-23 Sunbum Pty., Ltd. Removable and adjustable surf fin system
WO2007048172A1 (fr) * 2005-10-24 2007-05-03 Aussie Assets Pty Limited Systeme de derive pour embarcation
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 (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3579681A (en) * 1969-04-01 1971-05-25 Karl D Pope Sectional and longitudinally adjustable surfboard fin assembly
US3585663A (en) * 1969-08-13 1971-06-22 W A V E Corp Longitudinally adjustable surfboard fin with self-contained locking mechanism
US3659300A (en) * 1969-07-25 1972-05-02 W A V E Corp Fin attachment structure for surfboards
US3965514A (en) * 1975-01-30 1976-06-29 Shafer Arthur B Adjustable and/or removable fin for surfboards
AU8447275A (en) * 1974-09-03 1977-03-10 Hanimex Pty. Ltd. Improved surfboard
DE2922860A1 (de) * 1979-06-06 1980-12-18 Peter Rupprecht Surfbrett mit finne
AU7365481A (en) * 1980-07-31 1982-02-04 Hanimex Pty. Ltd. Mounting means for surfboard fin
WO1982001694A1 (fr) * 1980-11-14 1982-05-27 Drexler Ernst Planche a voile avec dispositif de fixation pour un aileron
AU7655881A (en) * 1981-10-16 1983-02-17 James Francis Woodriff Belt-strap connection

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU527179B2 (en) * 1981-10-16 1983-02-17 James Francis Woodriff Belt-strap connection

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3579681A (en) * 1969-04-01 1971-05-25 Karl D Pope Sectional and longitudinally adjustable surfboard fin assembly
US3659300A (en) * 1969-07-25 1972-05-02 W A V E Corp Fin attachment structure for surfboards
US3585663A (en) * 1969-08-13 1971-06-22 W A V E Corp Longitudinally adjustable surfboard fin with self-contained locking mechanism
AU8447275A (en) * 1974-09-03 1977-03-10 Hanimex Pty. Ltd. Improved surfboard
US3965514A (en) * 1975-01-30 1976-06-29 Shafer Arthur B Adjustable and/or removable fin for surfboards
DE2922860A1 (de) * 1979-06-06 1980-12-18 Peter Rupprecht Surfbrett mit finne
AU7365481A (en) * 1980-07-31 1982-02-04 Hanimex Pty. Ltd. Mounting means for surfboard fin
WO1982001694A1 (fr) * 1980-11-14 1982-05-27 Drexler Ernst Planche a voile avec dispositif de fixation pour un aileron
AU7655881A (en) * 1981-10-16 1983-02-17 James Francis Woodriff Belt-strap connection

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2691943A1 (fr) * 1992-03-09 1993-12-10 Fin Control Systems Pty Ltd Système de fixation d'ailerons de surfing à douilles et chevilles.
US5464359A (en) * 1992-03-09 1995-11-07 Fin Control Systems Pty. Limited Surf fin fixing system
US6139383A (en) * 1997-10-27 2000-10-31 Pat-Tech Pty Ltd. Fin assembly
WO2003042031A1 (fr) * 2001-11-13 2003-05-22 Sunbum Pty Ltd Systeme de derive de surf amovible et reglable
US6821173B2 (en) 2001-11-13 2004-11-23 Sunbum Pty., Ltd. Removable and adjustable surf fin system
WO2007048172A1 (fr) * 2005-10-24 2007-05-03 Aussie Assets Pty Limited Systeme de derive pour embarcation
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
US9957021B2 (en) 2012-11-14 2018-05-01 Fin Control Systems Pty. Limited Fin plug for a water craft

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