EP0979773A1 - Segel, Segeltuch, Verfahren zu deren Herstellung und Gerät zur Durchführung des Verfahrens - Google Patents

Segel, Segeltuch, Verfahren zu deren Herstellung und Gerät zur Durchführung des Verfahrens Download PDF

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Publication number
EP0979773A1
EP0979773A1 EP98202359A EP98202359A EP0979773A1 EP 0979773 A1 EP0979773 A1 EP 0979773A1 EP 98202359 A EP98202359 A EP 98202359A EP 98202359 A EP98202359 A EP 98202359A EP 0979773 A1 EP0979773 A1 EP 0979773A1
Authority
EP
European Patent Office
Prior art keywords
sail
producing
sail cloth
electrically conductive
cloth according
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Withdrawn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
EP98202359A
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English (en)
French (fr)
Inventor
Robert André Lainé
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP98202359A priority Critical patent/EP0979773A1/de
Publication of EP0979773A1 publication Critical patent/EP0979773A1/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Withdrawn legal-status Critical Current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
    • B63H9/00—Marine propulsion provided directly by wind power
    • B63H9/04—Marine propulsion provided directly by wind power using sails or like wind-catching surfaces
    • B63H9/06—Types of sail; Constructional features of sails; Arrangements thereof on vessels
    • B63H9/067—Sails characterised by their construction or manufacturing process
    • B63H9/0678—Laminated sails
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H9/00—Marine propulsion provided directly by wind power
    • B63H9/04—Marine propulsion provided directly by wind power using sails or like wind-catching surfaces
    • B63H9/06—Types of sail; Constructional features of sails; Arrangements thereof on vessels
    • B63H9/067—Sails characterised by their construction or manufacturing process

Definitions

  • the present invention relates to sailcloth for producing sails for sailing ships.
  • Sailing ships cruising at sea commonly use a radar-reflector which is hoisted in the mast or the rigging so that large vessels or other vessels having a radar system can detect these sailing ships and avoid collision or other accidents.
  • These radar reflectors have to be hoisted in a correct position in order to function properly. During heavy weather the reflector can get out of order or even get lost overboard. Furthermore due to their limited dimensions or too low position they cause a small echo on the radar screen of the vessel carrying the radar system. This may lead to not noticing the sailing ship and ensuing danger of collisions. Furthermore in case of breakage of the mast the classical radar reflector can be lost.
  • the object of the invention is overcoming these disadvantages and providing a simple structure which is capable of reflecting radar waves and is already included in a part of the rigging.
  • a jury rig In case of breakage of the mast a jury rig can be set-up and a new radar reflecting sail set thereby restoring better radar visibility to vessels or air search aircraft.
  • the electrically conductive elements are formed by metal foil elements including at least a substantial part of the structure of the sail cloth.
  • a second embodiment is characterised in that the electrically conductive elements are formed by conductive polymer foil elements including at least a substantial part of the structure of the sail cloth.
  • a third embodiment is characterised in that the electrically conductive elements are formed by metal wire elements including at least a substantial part of the structure of the sail cloth.
  • a fourth embodiment is characterised in that it is mainly according to one or more of the above embodiments but a substantial pan of the structure of the sail cloth is free of electrically conductive elements. This provides a location for transparent viewing "windows”.
  • the electrically conductive element can be fastened on a substrate by gluing, stitching, spraying or plasma torch action respectively.
  • the invention also relates to a method for producing sail cloth and sails. and a new way of producing and reinforcing such sail.
  • a method for producing sail cloth and sails and a new way of producing and reinforcing such sail.
  • the conductive layer used can be a metal foil or a conductive polymer foil. It has to be arranged in such way as to maximise the area exposed to incoming radar electromagnetic waves. This can be achieved by a conductive film or conductive strips or closely spaced metal wires or a combination of them covering and reinforcing as much as possible the polymer film.
  • a first practical and simple way of implementing the conductive layer on existing sails is to glue or stitch thin metal foils on the cloth of the sail.
  • Another solution is to deposit a thin layer of metal with a plasma torch or spray a metal loaded polymer on the sail. This can be done on both sides of the sail to give it a distinctive metallic look.
  • Conductive wires or threads can also be used in the weaving of classical sail cloth to achieve the necessary electromagnetic reflectivity.
  • a conductive layer made of a few tens of microns of metal can be laminated with a polymeric substrate such as polyester or polyamide or polyethylene.
  • the film of metal will provide additional strength to the polymeric substrate. Nevertheless, such thin membrane is reinforced by strands of metallic wires mixed or not with polymer fibres or threads as described below.
  • strand will be used indifferently for strands of wires or single wire.
  • the wire metal can be the same as the membrane material or different.
  • the material will be selected for its strength, durability and ease of production in wire of small diameter of typically 20 to 200 microns. More wires of the smaller diameter will be needed to make the sail more pliable but that will be at the expense of production time and cost.
  • the strands used to reinforce the membrane will be disposed in an innovative straight triangular mesh arrangement shown in figure 1 such that for any elementary area of the sail, there are strands connecting it to the 3 corners of the sail, 2, 2a and 2b.
  • the basic sail membrane with or without a loosely woven cloth covering the sail area can be shaped using any normal sail making techniques with shaped panels glued or stitched together.
  • the membrane is slightly tensioned between one corner and one point on the opposite edge, and left free of tension in the perpendicular direction and at the other 2 corners.
  • the strand coated with glue or weldable polymer or naked is rolled out under controlled tension and glued or hot welded or electrically welded on the membrane metal foil along the line of tension created in the membrane.
  • the strands lay-up start from the edge of the sail, runs up to the opposite corner, pass around an eyelet specifically placed at the corner point and runs back to the starting edge at a point adjacent to the starting point.
  • the point of tensioning of the membrane is moved to a place adjacent to the previous one.
  • the next strand start from this new point on the edge, runs up and round the corner eyelet and back to the edge at an adjacent point, and so on.
  • the process is repeated for the three sides of the sail, running strands around the opposite corner eyelet, thereby ensuing a complete coverage of the sail surface.
  • the radial arm 1 is positioned above the eyelet 2 attached to one corner of the sail membrane 3, and the tensioning device 4.
  • the radial arm 1 carries a strand laying table 5 moving up and down the arm driven by an electric motor.
  • the strand laying table 5 carries the strand feeder 6 and pressing roller 7 needed to lay and glue or weld the strands on the membrane.
  • the arm can be a single arm attached above a flat surface or can have a counter arm 8 and second moving table 9 synchronised with the laying table and carrying the counter roller 10 positioned under the sail to react the pressing roller force.
  • the pressing roller in action is always trailing the strand feeder.
  • the strand laying table is organised such that the feeder and pressing rollers are offset from the centre line of displacement.
  • the table rotates by 180 degree when arriving at the eyelet, thereby ensuring that the strand is wrapped around the eyelet with the pressing roller again trailing the feeder on the run back to the starting point.
  • the rotating action can be triggered by roller riding on a ramp positioned on the radial arm at the level of the eyelet and mechanical linkages lifting first the pressing roller before driving the rotation of the strand laying as the table passes along the position of the eyelet and reverses toward the starting point on the edge of the sail.
  • the same lifting and rotation action can also be triggered by an optical or magnetic sensor detecting the proximity of the eyelet and executed by electromagnetic or pneumatic actuators controlled by an electronic sequencer.
  • a finishing film of polymer or fine cloth can be glued on top of the strands to protect them against environment aggressions or abrasion.
  • a sleeve is placed on the strands running around the eyelet to hold them together and protect them. Tapes can be added to seal the edges and make a sail compatible with luff groove system found on many sailboats.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Laminated Bodies (AREA)
EP98202359A 1998-07-14 1998-07-14 Segel, Segeltuch, Verfahren zu deren Herstellung und Gerät zur Durchführung des Verfahrens Withdrawn EP0979773A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98202359A EP0979773A1 (de) 1998-07-14 1998-07-14 Segel, Segeltuch, Verfahren zu deren Herstellung und Gerät zur Durchführung des Verfahrens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98202359A EP0979773A1 (de) 1998-07-14 1998-07-14 Segel, Segeltuch, Verfahren zu deren Herstellung und Gerät zur Durchführung des Verfahrens

Publications (1)

Publication Number Publication Date
EP0979773A1 true EP0979773A1 (de) 2000-02-16

Family

ID=8233926

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98202359A Withdrawn EP0979773A1 (de) 1998-07-14 1998-07-14 Segel, Segeltuch, Verfahren zu deren Herstellung und Gerät zur Durchführung des Verfahrens

Country Status (1)

Country Link
EP (1) EP0979773A1 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2275359A1 (fr) * 1974-06-19 1976-01-16 Greze Andre Voile ayant un pouvoir reflecteur aux ondes radar
DE7906321U1 (de) * 1979-03-07 1980-08-14 Verseidag-Industrietextilien Gmbh, 4150 Krefeld Textiles Flächengebilde
EP0034189A1 (de) * 1980-02-13 1981-08-26 Verseidag-Industrietextilien Gmbh Segeltuch
EP0174792A2 (de) * 1984-09-07 1986-03-19 Teijin Limited Wasserdichtes Verbundschichtmaterial
EP0222610A2 (de) * 1985-11-13 1987-05-20 Teijin Limited Verbundbahn für Segel und Verfahren zu ihrer Herstellung
DE8913676U1 (de) * 1989-11-20 1990-01-25 Hoechst Ag, 6230 Frankfurt, De
US5355820A (en) * 1992-07-27 1994-10-18 Sobstad Corporation Machines for making laminate suitable for stress bearing materials such as sails

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2275359A1 (fr) * 1974-06-19 1976-01-16 Greze Andre Voile ayant un pouvoir reflecteur aux ondes radar
DE7906321U1 (de) * 1979-03-07 1980-08-14 Verseidag-Industrietextilien Gmbh, 4150 Krefeld Textiles Flächengebilde
EP0034189A1 (de) * 1980-02-13 1981-08-26 Verseidag-Industrietextilien Gmbh Segeltuch
EP0174792A2 (de) * 1984-09-07 1986-03-19 Teijin Limited Wasserdichtes Verbundschichtmaterial
EP0222610A2 (de) * 1985-11-13 1987-05-20 Teijin Limited Verbundbahn für Segel und Verfahren zu ihrer Herstellung
DE8913676U1 (de) * 1989-11-20 1990-01-25 Hoechst Ag, 6230 Frankfurt, De
US5355820A (en) * 1992-07-27 1994-10-18 Sobstad Corporation Machines for making laminate suitable for stress bearing materials such as sails

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