ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,234,749, issued on Feb. 25.
"Hybrid heat engine system" was invented by Job E. Freedman (Salt Lake City).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hybrid heat engine system includes a chamber housing including an inlet and an outlet. A piston is disposed in an interior volume of the chamber housing. The hybrid heat engine system further includes a valve configured to provide a first fluid in a heated state from a heat source to the interior volume via the inlet. The first fluid in the heated state is to push against a first side of the piston to cause a second side of the piston to push a working fluid out of the interior volume and through a turb...