ALEXANDRIA, Va., March 17 -- United States Patent no. 12,578,030, issued on March 17, was assigned to DENSO Corp. (Kariya-city, Japan).
"Valve device" was invented by Atsushi Tanaka (Kariya-city, Japan), Yasuo Kato (Kariya-city, Japan) and Ryo Sano (Kariya-city, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A boss is shaped in a tubular form and is injection molded integrally with a housing that forms a flow passage. A ring member is press-fitted to an inner peripheral wall of the boss. A shaft placed on a radially inner side of the ring member is configured to be rotated about a central axis. A movable valve is coupled to a portion of the shaft and is configured to adjust a size of a cross-sectional ...