ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,591, issued on May 20, was assigned to Transcend Energy Group LLC (Sandpoint, Idaho).

"Reciprocating-piston assembly, internal combustion engine, and related methods" was invented by Jon Woodward (Mapleton, Utah).

According to the abstract* released by the U.S. Patent & Trademark Office: "A piston assembly includes a piston head for reciprocating back and forth within a cylinder of an engine, an upper rod coupled to the piston head at one longitudinal end of the upper rod and fixed relative to the piston head, and a lower rod rotatably coupled to an opposite longitudinal end of the upper rod, the lower rod configured to pivot about the opposite longitudinal end of the upper rod. ...