Huh, "patented thermodynamic cycle" sound like a big red flag. I can't quite figure out how they can manage to seal this contraption - plenty of rotating and s

Huh, "patented thermodynamic cycle" sound like a big red flag. I can't quite figure out how they can manage to seal this contraption - plenty of rotating and sliding gaps in there. Manufacturing of some of the shown parts look tricky as well. It looks more like some cool gadget that you design for a movie than a practical machine.