ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,186, issued on March 18, was assigned to Vanzandt Controls LLC (Odessa, Texas).
"Valve stem lifter" was invented by Dave Latch (Odessa, Texas) and Anthony Prieto (Odessa, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A valve stem lifter assembly which operates to alternatively open and close a valve, includes a rotatably mounted rotary shaft having a top end axially aligned with a riser with a rigidly connected pull shaft and an opposite end axially aligned with an operator for selectively producing rotational movement of the rotary shaft and corresponding axial movement of the riser and pull shaft. The rotary shaft is rotatably connected to...