ALEXANDRIA, Va., April 7 -- United States Patent no. 12,595,863, issued on April 7, was assigned to FUJIKOKI Corp. (Tokyo).
"Electric valve" was invented by Tatsuya Yoshida (Tokyo) and Yusuke Arai (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric valve includes a valve body that has a valve port and a valve seat enclosing the valve port, a valve member that faces the valve port, a valve stem, and a stepping motor. The valve stem has an external thread. The valve body has an internal thread into which the external thread is screwed. The external thread and the internal thread constitute a screw-feed mechanism. The valve stem is coaxially secured to a magnet rotor of the stepping motor. The low...