ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,276, issued on Oct. 14, was assigned to Schlumberger Technology Corp. (Sugar Land, Texas).
"Redundant trigger system" was invented by Maria Fernanda Tafur (Houston), Bo Chen (Stanford, Calif.), Yann Dufour (Houston), Brian Walther (Missouri City, Texas), Brad Swenson (Friendswood, Texas) and Steven E. Buchanan (Pearland, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A redundant trigger section that actuates a device between operational positions in response to a controlled signal includes a housing including an internal through passage and a plurality of chambers formed in a wall of the housing, a pilot piston disposed within the internal thr...