ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,535,142, issued on Jan. 27.
"Flow control valve" was invented by Vadim Mikhailovich Sakizchi (Moscow) and Snezhana Valerievna Sobolevskaya (Moscow).
According to the abstract* released by the U.S. Patent & Trademark Office: "A flow control valve contains an actuator and a housing with a control element having inlet and outlet nozzles with through openings of the same diameter and a central part located coaxial therewith between the nozzles with radially directed, longitudinally oriented throttling elements evenly located on its inner cylindrical surface: fixed ones each having the shape of a triangular tooth in cross-section, and movable throttling elements located between them, made...