ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,608, issued on June 17, was assigned to Halliburton Energy Services Inc. (Houston).
"Linear escapement for a subterranean valve" was invented by Michael Reid (Aberdeenshire, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A linear escapement mechanism is provided for actuating a downhole tool in a controlled and predictable manner, such as in response to a certain number of pressure cycles. In an example, the actuator includes an escapement sleeve moveable with respect to an actuator housing. The escapement sleeve has a plurality of escapement teeth. A rocker secured within the actuator housing has opposing first and second pallets. An ...