ALEXANDRIA, Va., July 28 -- United States Patent no. 12,693,690, issued on July 28, was assigned to KALSI ENGINEERING INC. (Sugar Land, Texas).
"Passive modulating design for fast responding control valves for high pressure gas applications" was invented by Zachary Wade Leutwyler (Richmond, Texas), Emil Mack Leutwyler (Richmond, Texas), Mital Chandrakant Mistry (Richmond, Texas) and Manmohan Singh Kalsi (Houston).
According to the abstract* released by the U.S. Patent & Trademark Office: "A passive, modulating flow control valve including a poppet having a precisely designed and constant unbalanced area. A spring rate is selected to achieve the desired poppet travel over the desired range of differential pressure. Preferably, the spring p...