The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 29, 2026
Filed:
Jan. 30, 2023
National Technology & Engineering Solutions of Sandia, Llc, Albuquerque, NM (US);
Jiann-Cherng Su, Albuquerque, NM (US);
Stephen Buerger, Albuquerque, NM (US);
Anirban Mazumdar, Atlanta, GA (US);
Adam Foris, Albuquerque, NM (US);
National Technology & Engineering Solutions of Sandia, LLC, Albuquerque, NM (US);
Abstract
A modular anti-rotation, centering and notching device for preventing off-axis movement of a drillstring with respect to the central axis of a drilling tool in a borehole and for producing a notch in a borehole surface. The device includes an upper fixture portion and a lower fixture portion in axial alignment. The upper fixture portion and the lower fixture portion are connected by yoke assemblies. Each yoke assembly is connected to the fixture portion and fixture portion at one end, and forming an articulated joint of the upper yoke assembly and the lower yoke assembly at a distal end opposite the first end. A roller is connected at each joint, connecting the upper and lower yoke assemblies. The rollers or cutters engage vertically with a borehole surface when fluid pressure is applied to the upper fixture portion.