ALEXANDRIA, Va., June 10 -- United States Patent no. 12,291,993, issued on May 6.
"Two stroke charge piston engine" was invented by Joseph Springer (Montclair, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An engine includes a cylinder block with a fixed trunnion and a cylinder head pivotably attached to the trunnion. The engine has a charge piston and power piston operating in cylinders attached to the cylinder head. Cylinder head valving controls an airflow from the trunnion interior into a charge piston volume during a charge piston intake stroke and restricts an opposite airflow during a charge piston compression stroke. Chamber valving allows an airflow into a chamber within the charge piston du...