ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,496,598, issued on Dec. 16, was assigned to Cummins Inc. (Columbus, Ind.).
"Swirl seat nozzle" was invented by Heico Stegmann (Reichenberg, Germany), Mathew J. Lloyd (Leeds, Great Britain), Lukas Kaufmann (Tiefenthal, Germany) and Robert L Holroyd (Halifax, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "An injector is provided, comprising: a valve seat having a needle opening extending from an upper surface along a longitudinal axis and terminating at a seating surface configured to mate with a valve needle to control flow of fluid through the injector, and a nozzle plate. The valve seat further comprises a plurality of drillings and a cor...