ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,203, issued on April 29.
"Hybrid propulsor for watercraft" was invented by Marangal Mendoza Jardiniano (Lake Elsinore, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A novel watercraft propulsion device is disclosed that includes multiple propulsive elements improving power and efficiency over prior designs. A self-adjusting variable pitch propeller is combined with a water jet and an exhaust driven turbine to provide optimal thrust and efficiency across the range of engine power, load and watercraft speed. Propulsive elements are axially disposed around a central drive shaft and exhaust port with the combined water jet/exhaust turbine dispose...