ALEXANDRIA, Va., June 10 -- United States Patent no. 12,292,089, issued on May 6, was assigned to Abaco Drilling Technologies LLC (Houston).
"PDM transmission with articulated torque transfer" was invented by Jing Lu (Houston), Peter Thomas Cariveau (Houston), Damon T. Landrum (Spring, Texas) and Steven C. Gaare (New Caney, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A ball-CV style transmission suitable for use in a Positive Displacement Motor (PDM). A shaft provides shaft wings received into housing receptacles on a housing. A Unitary Torque Transfer Element (UTTE) is interposed between each shaft wing and housing within each housing receptacle, with a spherical surface on the UTTE received into a...