Thanks very much for the advice, and for taking this seriously in general.
Just to clarify, it's a "high concept" idea and a prototype would be very challenging to build just because there would be a ton of first-time issues to work out. I really don't think I could do it just by a hiring frame maker/welder. Making a finished product would also require some significant R and D.
Maybe I will get the advice of a patent lawyer as to whether any aspect of the design is patentable.
Yan, can you think of anyone who would be interested in seeing it?
Also, does anyone have any advice about entering one of these design competitions?
My thanks again.