FTR If an “individual” wants to build my patented Coanda Channel technology for “personal use,” more power to him/her. But for profit (commercial production), I would have a problem with that.
I patented my channel technology to keep surfboard/kneeboard/bodyboard companies from using my ideas for their profit. I designed the channel with the principles of the Coanda Effect — observed and documented by Henri Coanda (1910 and 1934-1936). The curve equations I generated were based on fluid mechanics designs.
It is not unreasonable to want protection from people who seek to “profit” from my ideas (intellectual property).
This Mike Daniel channel from 1990 inspired me. And eventually, I discovered the Coanda Effect. (Mike and the Bing Auga got close but missed the next level of evolution.)
Twin Coanda Channels:
Closing in on the final shaping files.
(Mislabeled; Front = Side & Right = Rear)
~ Again, jrandy (Jim) has transformed my data into visual images ~
The recessed channel is low drag. The wall curves create counter-vortices that minimize disturbance to the boundary layer. Ultimately, an area of low pressure is created in the channels and under the tail, functioning as low-drag, finless fins. Twin channels to create a more twin fin like performance relative to the single Coanda Channel tail. And no nasty fin gashes in my skin.
