US Patent Issued to Mainspring Energy on Jan. 28 for "Control of piston trajectory in a linear generator" (California Inventors)

ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,209,548, issued on Jan. 28, was assigned to Mainspring Energy Inc. (Menlo Park, Calif.).

"Control of piston trajectory in a linear generator" was invented by Matthew Roelle (Belmont, Calif.) and Christopher Gadda (Palo Alto, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Various embodiments of the present disclosure are directed towards free-piston combustion engines. As described herein, a method and system are provided for displacing a free-piston assembly to achieve a desired engine performance by repeatedly determining position-force trajectories over the course of a propagation path and effecting the displacement of the free-piston assembly ...