patents.google.com/patent/US5862769"windsurf+sail"&printsec=abstract#v=onepage&q="windsurf sail"&f=false
here we go.. does a 2 line address work?
i haven't read the whole lot but if it's what i think it is, that's been around a while now and when i first saw it i thought what tha, this guys rigged hid adjustable outhaul all wrong, till i realised how it worked and then thought, that's quite clever
. i wonder how successful it is?
The patent was filed in 1997 ... It's 14 years old, I have never seen one for sale or in use, so I suggest it neither works well or is marketable. The patentee is unlikely to have retired on the profit... Infact probably still owes his patent attorney a fair bit of cash.
