ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,866, issued on Oct. 28, was assigned to BREAKTHROUGH DESIGN (Antony, France).
"Rotational guidance device for a drilling tool and associated method" was invented by Francois Guy Jacques Rene Millet (Antony, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A device for guiding a drilling tool in rotation, the device including a tubular longitudinal element, a transmission shaft passing longitudinally through the tubular element, the shaft being rotatably mounted in the tubular element for rotating the drilling tool, the guiding device including bearing blocks mounted between the tubular element and the shaft, each bearing block being attached to...