It looks like a nice clean device, obviously robust. I'd buy one if I had the money. Or more.
It does not seem realistic though to claim invention of the heliostat:
"Gérard Montel, inventor.
The Touneseul is a device invented and patented by Gérard Montel"
Perhaps it is to warn off cheap copiers like James Dyson does with his industrial vacuum copies.
Or perhaps the patent is something more specific.
Anyway, nice job.