ALEXANDRIA, Va., May 5 -- United States Patent no. 12,618,292, issued on May 5, was assigned to National Oilwell Varco LP (Houston).
"On demand flow pulsing system" was invented by Khoi Trinh (Spring, Texas), Steve Bhagwandin (Houston), Yufang Xia (Houston) and Ian Forster (The Woodlands, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments disclosed herein are directed to a flow pulsing system including a rotor, a stator, a dart which is configured to releasably couple with the rotor, and a nozzle releasably coupled to the rotor which is configured to control a fluid flow through the rotor. In some embodiments, the system uses a screen disposed therein which includes an inner bore in fluid commu...