is there any patent on wood/epoxy cold molding construction?

Discussion in 'Boat Design' started by adriano, Mar 10, 2013.

  1. adriano
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    adriano Junior Member

    is there any patent valid to be awere of concerning
    wood/epoxy cold molding construction?
    Appreciate any comments
    Thanks
    Adriano;)
     
  2. gonzo
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    gonzo Senior Member

    I don't think so. It has been used for decades and most of it is an evolution of coldmolded techniques with previous types of adhesive.
     
  3. adriano
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    adriano Junior Member

  4. gonzo
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    gonzo Senior Member

    That is the Constant Camber type of system. The patent should be expired by now.
     
  5. adriano
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    adriano Junior Member

    Thanks I hope so too.
    adriano
     
  6. PAR
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    PAR Yacht Designer/Builder

    Hi Adriano, 1984 patents would be expired by now, though I think an extension can be had, if the owners wished. Still attempting to get India's marine vendors into the 21st century?
     
  7. adriano
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    adriano Junior Member

    Hi Paul,
    Yes that's wish and sofar it looks like it's going to happen. This week I'll be back there to form the comapny. The start will be to manufacture small sail boats in cold molding
    epoxy red cedar veneer and I wanted be sure that I'll not face any patent problem if any existing. The other issue is sail source. Indeed I would have to import them but fairly expensive due to import duties etc. So I'm considering , being matter of small sizes up to 10 sqmt., to make sails locally , therefore I was looking for some advices f.e. where best to get dacron sail cloth, sail drawings from?
    A zig-zag sail sewing machine should be enough to process the whole job?! There are good experts there available in fine leather/syntetic stitching . I think it should be managable.
    I appreciate any suggestion
    Adriano
     
  8. messabout
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    messabout Senior Member

    Skilled sewing machine operators can make just about anything that their cut fabric parts will allow. The making of a good sail is much more than just sewing parts together. There are subtle curves in the seams and extremities of a good working sail. Yes you can learn to do the the design work but it will need some careful study.

    To make matters even more complicated, the sail needs to be mated carefully with the mast and boom. Masts may bend when under load and the sail must be cut in such a way as to compensate for mast bend while maintaining a favorable shape. Sail making is both art and science.
     
  9. adriano
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    adriano Junior Member

    of course, definitely I am awere of, that's why I need some expert to listen to! I'll not do it for fun the circumstances give no other choise!:(
    Just hope somebody can give some suggestions whom I could cantact.
    Rgds
    Adriano
     
  10. michael pierzga
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    michael pierzga Senior Member

    Visit a sailmaker. They have mountains of old sails ready for the trash. An old sail fails along its perimeter and its corners ...normally from UV damage and chafe . The cloth in center of the sail will still be perfect. Cut this central piece of sail cloth out of the old sail, then reshape it into something suitable for your boat.

    Look for lightweight spectra sails...that spectra last forever.

    Also ask the sailmaker for any old One Design sails. Competitive Race boat guys throw perfectly good sails away
     
  11. adriano
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    adriano Junior Member

    OK thanks this could be an option.
    Adriano
     
  12. peter radclyffe
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    peter radclyffe Senior Member

  13. peter radclyffe
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    peter radclyffe Senior Member

    anche
    amici della vela forum
     
  14. adriano
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    adriano Junior Member

    Thanks Peter,
    I appreciate.
    Adriano
     

  15. Tad
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    Tad Boat Designer

    google Sailmaker Todd Bradshaw......he's active on a few forums (WoodenBoat, etc) and has written at least one book on sailmaking....very helpful guy....

    Todd Bradshaw at Addiction Sailmakers, 210 Merrill Crest Dr. Madison WI 53705, (608) 233-3223.
     
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