EP0213034A1 - Gabelbaum mit selbstklemmendes Gabelstück - Google Patents

Gabelbaum mit selbstklemmendes Gabelstück Download PDF

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Publication number
EP0213034A1
EP0213034A1 EP86401751A EP86401751A EP0213034A1 EP 0213034 A1 EP0213034 A1 EP 0213034A1 EP 86401751 A EP86401751 A EP 86401751A EP 86401751 A EP86401751 A EP 86401751A EP 0213034 A1 EP0213034 A1 EP 0213034A1
Authority
EP
European Patent Office
Prior art keywords
mast
wishbone
branches
end piece
shaped part
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.)
Withdrawn
Application number
EP86401751A
Other languages
English (en)
French (fr)
Inventor
Christian Daquin
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.)
LE PROFIL
Original Assignee
LE PROFIL
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 LE PROFIL filed Critical LE PROFIL
Publication of EP0213034A1 publication Critical patent/EP0213034A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H8/00—Sail or rigging arrangements specially adapted for water sports boards, e.g. for windsurfing or kitesurfing
    • B63H8/20—Rigging arrangements involving masts, e.g. for windsurfing
    • B63H8/22—Rigging arrangements involving masts, e.g. for windsurfing for connecting wishbones to the mast

Definitions

  • the present invention relates to a double boom, commonly called wishbone, comprising a self-locking tip, in particular for windsurfing.
  • the wishbone On windsurfing, or any other sailing machine equipped with a wishbone, it generally consists of two branches joined by a front end (or handle) and by a rear end (or handle). According to all known systems, the wishbone bypasses the mast and it is fixed to the latter by means of a cord going around the mast (twice) and of which one end comprising a knot this capstan is engaged in a hole provided in the 'front end of the wishbone and the other is engaged in a cleat carried by a wishbone arm.
  • the invention therefore relates to a wishbone characterized in that it comprises a front end com carrying a substantially U-shaped wall whose bottom is intended to be supported on the mast from the outside of the boom and whose branches are tightened on the mast by reaction to the stretching of the listening point of the sail.
  • the front end piece according to the invention forms a self-locking pincer on the mast.
  • the U-shaped part of the front end piece is a half-ring, of substantially semi-cylindrical shape. This half-ring can be usefully flared in order to receive masts of different diameters.
  • the front end piece On the outer edges of the half-ring, the front end piece includes two supports for fixing to the branches of the wishbone, for example by means of two shouldered cylindrical elements, intended to be engaged in the branches of the wishbone. And for this purpose forming a angle substantially equal to the angle formed by the two branches at the front of the wishbone at rest.
  • the intermediate part of the front end piece, between the branches of the U-shape and the fixing supports, may include recesses facilitating the folding of the front end piece under tension and allowing better clamping of the mast.
  • the inner surface of the U-shaped part, in contact with the mast, can advantageously include a layer of elastic, non-slip material, allowing better grip of the mast.
  • the front end can be made of all kinds of materials, in particular metal (stainless steel, aluminum or its alloys) or resistant plastic (thermosetting resins such as urea / formaldehyde or polyolefins, etc ...) reinforced.
  • metal stainless steel, aluminum or its alloys
  • resistant plastic thermosetting resins such as urea / formaldehyde or polyolefins, etc .
  • the axes of the articulations are preferably metallic.
  • the front end piece may comprise, at the front of the supports, two cleat cleats formed in the mass and four holes, making it possible to receive a safety end going around the mast from the front, this device however not being necessary in the context of the invention.
  • the front wishbone end cap (or front handle) shown in Figs. 1A and 1B comprises a part 1 substantially in the shape of a U, the bottom of which is intended to be in abutment on the mast from the outside of the boom and whose branches tighten on the mast by reaction to the stretching of the listening point of the sail.
  • This part 1 is a half-ring of substantially semi-cylindrical shape (about 5 cm high, for example) intended to engage the mast and forming self-locking pincers on the latter by reaction to the action of tugging of the sail. .
  • the front end piece comprises two supports 2 for fixing the wishbone by means of two shouldered cylindrical elements 3 which can be engaged in the tubes of the branches of the wishbone and forming substantially the same angle.
  • the entire front end piece is for example made of polypropylene and has, at the front, supports 2, two cleat cleats 4 made in the mass and four holes 5 intended to receive a safety end, allowing the wishbone to be attached around the mast.
  • the wishbone deforms by widening. This deformation is transmitted to the jaws formed by the branches of the half-ring 1 which return inwards, producing a pincer effect on the mast. The greater the tension, the more effective the clamping on the mast.
  • the mast is threaded into the sail sleeve as far as the wishbone location window, the latter is placed in the normal navigation position, the self-locking front handle according to the invention is positioned at the desired height and the sail.
  • the self-locking device according to the invention ensures optimum efficiency by avoiding disturbances of the laminar flow for a minimum weight and allows perfect blocking of the whole rigging easily and quickly.
  • the lateral blocking makes it possible to maintain the plane of the wishbone perpendicular to the axis of the mast and eliminates the lateral oscillating movements of the wishbone, in particular during the maneuvers.
  • the intermediate part of the front end piece shown in FIGS. 2A and 28, between the branches of the U-shape and the fixing supports, has on each side two recesses 6 facilitating the folding of the front end under tension (Fig. 28) and allowing better clamping of the mast 7.
  • the inner surface of the U-shaped part in contact with the mast comprises a layer 8 of elastic non-slip material, for example plastic foam.
  • the front end piece includes two articulated elements abutments 9 forming a clamp, each of the elements 9 comprising, on the one hand, an articulation 10 with the edge of the U-shaped part 1 and, on the other hand, an articulation 11 with the fixing support; thus, during the stretching of the listening point of the sail, the articulated elements 9 pushed by the branches of the wishbone, close on the mast (Fig. 3B).
  • Part 1 which is substantially semi-cylindrical, can for example be made of stainless steel.
  • the part 1 substantially U-shaped has a hinge 12 in the middle; the ends of the branches include a rounded 13 inward to better grip the mast; this arrangement also allows the use of more solid materials, in particular metals.
  • each of the branches of the U-shaped part 1 has an articulation 10 with the adjacent fixing support 2;
  • the U-shaped part is made of flexible material (plastic or thin steel), allowing the U-shaped part 1 to better match the shape of the mast 7 by folding (Fig. 5B).
  • front handle according to the invention can be adapted to any type of wishbone without departing from the scope of the invention.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Toys (AREA)
  • Emergency Lowering Means (AREA)
EP86401751A 1985-08-07 1986-08-05 Gabelbaum mit selbstklemmendes Gabelstück Withdrawn EP0213034A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8512081A FR2586005A1 (fr) 1985-08-07 1985-08-07 Wishbone a geometrie variable
FR8512081 1985-08-07

Publications (1)

Publication Number Publication Date
EP0213034A1 true EP0213034A1 (de) 1987-03-04

Family

ID=9322064

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86401751A Withdrawn EP0213034A1 (de) 1985-08-07 1986-08-05 Gabelbaum mit selbstklemmendes Gabelstück

Country Status (3)

Country Link
EP (1) EP0213034A1 (de)
AU (1) AU6091986A (de)
FR (1) FR2586005A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0253351A2 (de) * 1986-07-11 1988-01-20 Joachim Merath Gabelbaum für Surfsegel
FR2604143A1 (fr) * 1986-09-19 1988-03-25 Attey Graeme Arceau de commande d'une planche a voile et raccord de fixation d'un tel arceau
EP0272463A1 (de) * 1986-11-21 1988-06-29 McGregor, Garth Bruce Gabelbaum für Segelbrett
GB2200881A (en) * 1987-01-28 1988-08-17 John Pownall Atkinson Wishbone boom for a sailing craft
DE3721325A1 (de) * 1987-06-27 1989-01-05 Rainer Buck Verbindungsvorrichtung zwischen mast und gabelbaum von windsurfgeraeten
AU599148B2 (en) * 1986-09-19 1990-07-12 Graeme Scott Attey Sailboard boom end fittings and sailboard boom systems
GB2232140A (en) * 1989-05-20 1990-12-05 Peter Stuart Spencer Wishbone boom mast collar for a sailboard

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3815761A1 (de) * 1987-08-14 1989-02-23 Hannes Marker Laengenverstellbarer gabelbaum
EP0317661A1 (de) * 1987-11-25 1989-05-31 North Sails Windsurfing GmbH Teleskopgabelbaum

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1979001078A1 (en) * 1978-05-16 1979-12-13 O Huess Wishbone
WO1981002717A1 (en) * 1980-03-20 1981-10-01 Marker Hannes Boom for sailing board
WO1982004425A1 (en) * 1981-06-11 1982-12-23 Gaide Albert Boom retaining device for sailing boards
WO1983003805A1 (en) * 1982-04-23 1983-11-10 Jamieson Robert S Improved sail system for sailboards, and boardsailing apparatus and method
EP0102669A2 (de) * 1982-09-06 1984-03-14 FABRIQUE NATIONALE HERSTAL en abrégé FN Société Anonyme Verbindung zwischen Gabelbaum und Mast eines Segelbrettes
EP0139782A1 (de) * 1983-10-29 1985-05-08 Partanag AG Veränderung der Segelfläche eines Segelbrettes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7933382U1 (de) * 1980-03-13 Max Kohla Kg, Innsbruck (Oesterreich) Gabelbaumbeschlag für Segelbretter
EP0071220B2 (de) * 1981-07-27 1991-03-27 Mistral Windsurfing AG Gabelbaum oder Spreizgaffel für Windsurfbretter
DE3143793A1 (de) * 1981-11-04 1983-05-11 Werner 8756 Kahl Haus Gabelbaum
FR2543510B1 (fr) * 1983-03-29 1988-10-14 Singer Sa Wishbone telescopique de longueur reglable pour planche a voile

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1979001078A1 (en) * 1978-05-16 1979-12-13 O Huess Wishbone
WO1981002717A1 (en) * 1980-03-20 1981-10-01 Marker Hannes Boom for sailing board
WO1982004425A1 (en) * 1981-06-11 1982-12-23 Gaide Albert Boom retaining device for sailing boards
WO1983003805A1 (en) * 1982-04-23 1983-11-10 Jamieson Robert S Improved sail system for sailboards, and boardsailing apparatus and method
EP0102669A2 (de) * 1982-09-06 1984-03-14 FABRIQUE NATIONALE HERSTAL en abrégé FN Société Anonyme Verbindung zwischen Gabelbaum und Mast eines Segelbrettes
EP0139782A1 (de) * 1983-10-29 1985-05-08 Partanag AG Veränderung der Segelfläche eines Segelbrettes

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0253351A2 (de) * 1986-07-11 1988-01-20 Joachim Merath Gabelbaum für Surfsegel
EP0253351A3 (de) * 1986-07-11 1988-07-20 Joachim Merath Gabelbaum für Surfsegel
FR2604143A1 (fr) * 1986-09-19 1988-03-25 Attey Graeme Arceau de commande d'une planche a voile et raccord de fixation d'un tel arceau
GB2195307A (en) * 1986-09-19 1988-04-07 Graeme Scott Attey A sailboard boom front end fitting
AU599148B2 (en) * 1986-09-19 1990-07-12 Graeme Scott Attey Sailboard boom end fittings and sailboard boom systems
EP0272463A1 (de) * 1986-11-21 1988-06-29 McGregor, Garth Bruce Gabelbaum für Segelbrett
GB2200881A (en) * 1987-01-28 1988-08-17 John Pownall Atkinson Wishbone boom for a sailing craft
DE3721325A1 (de) * 1987-06-27 1989-01-05 Rainer Buck Verbindungsvorrichtung zwischen mast und gabelbaum von windsurfgeraeten
GB2232140A (en) * 1989-05-20 1990-12-05 Peter Stuart Spencer Wishbone boom mast collar for a sailboard

Also Published As

Publication number Publication date
FR2586005A1 (fr) 1987-02-13
AU6091986A (en) 1987-02-12

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Inventor name: DAQUIN, CHRISTIAN