US Patent Issued to Halliburton Energy Services on June 30 for "Electric submersible pump rotor assembly with hydrodynamic bearing" (British Inventor)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,669,041, issued on June 30, was assigned to Halliburton Energy Services Inc. (Houston).

"Electric submersible pump rotor assembly with hydrodynamic bearing" was invented by Michael Rimmer (Frimley, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "An exemplary rotor assembly for an electric submersible pump may include a drive shaft, a journal sleeve concentrically disposed about and rotationally fixed to the drive shaft, a bushing concentrically disposed about and configured to rotate with respect to the journal sleeve, and a thrust washer, or component integrating the thrust washer, encircling the drive shaft. Concavities may be formed in a...