US Patent Issued to Protex ESP on Aug. 5 for "Safety brake for electrical submersible pumps powered by permanent magnet motors" (American, Spanish Inventors)

ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,378,853, issued on Aug. 5, was assigned to Protex ESP LLC (Houston).

"Safety brake for electrical submersible pumps powered by permanent magnet motors" was invented by Andrew Jardine Leitch (Barcelona, Spain) and Paul Reginald Shotter (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device disclosed herein is used with an electric submersible pump (ESP) assembly disposed on tubing in a well. A housing of the device connects between tubing and pump. A shaft in the housing can rotate in response to imparted rotation associated with the pump and permanent magnet (PM) motor. A piston in the housing can move longitudinally relative to the shaft in re...