ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,720, issued on April 22, was assigned to Huntington Ingalls Inc. (Newport News, Va.).
"Spool valve actuator" was invented by Charles Smith (Newport News, Va.) and Stephen Hollowood (Newport News, Va.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A spool valve actuator may include a stop fixed to the case with a cylindrical body member having a first set of slots of a first length at regular circumferential distances and a second set of slots of a second length at regular circumferential distances offset from the first set of slots, both set of slots configured to slidably receive a proximal portion of a positioner, a ratchet member may comprise, a c...