US Patent Issued on Oct. 20 for "Stirling engine with near isothermal working spaces" (Indiana Inventor)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,768,574, issued on Oct. 20.

"Stirling engine with near isothermal working spaces" was invented by Jonathan Nord (Jasper, Ind.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A single-acting (two pistons) or double-acting (four pistons) alpha configuration Stirling engine has increased thermal exchange between a hot piston crown and a hot head and between a cold piston crown and a cold head of each piston cylinder assembly, increasing conversion of thermal energy to mechanical motion. The thermal exchange is provided by presenting corresponding transverse peaks and valley that create increased surface area and increased convective fluid flow rate for a wo...