ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,740, issued on June 17, was assigned to Hamilton Sundstrand Corp. (Charlotte, N.C.).
"Variable displacement pumps" was invented by Edward W. Goy (Crystal Lake, Ill.), Zachary Allen Ray Le Duc (Rockford, Ill.), Mark W. Shoemaker (Pecatonica, Ill.) and Mason Rosenberg (Loves Park, Ill.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A variable displacement pump system can include a piston sleeve having at least a first inner diameter portion and a second in inner diameter portion and an actuator piston configured to be disposed within the piston sleeve. The actuator piston can have a first piston portion having a first outer diameter, and a second pist...