US Patent Issued to Flowserve on May 27 for "Efficient system for pumping low-density liquids" (American, German Inventors)

ALEXANDRIA, Va., June 17 -- United States Patent no. 12,313,074, issued on May 27, was assigned to Flowserve Pte. Ltd. (Singapore).

"Efficient system for pumping low-density liquids" was invented by Ramakrishnan Rengasamy (Fogelsville, Pa.), Sean A. Cain (Tulsa, Okla.) and Andreas Dreiss (Geestland, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system and method of pumping low-density liquids, such as liquid hydrogen (LH2), includes a plurality of integrated motor/pump modules (IMPs) interconnected in series, each having a single IMP impeller. A controller separately adjusts the speeds of the IMP impellers such that a specified head of the pumping system is achieved, while a critical NPSH_c of eac...