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:
May. 18, 2021
Filed:
Nov. 12, 2018
Applicant:
Ulterra Drilling Technologies, L.p., Fort Worth, TX (US);
Inventors:
Jorge Arthur Silveus, III, Fort Worth, TX (US);
Alfred Harold Skinner, Aledo, TX (US);
Benjamin Chrest, Fort Worth, TX (US);
Assignee:
Ulterra Drilling Technologies, LP, Fort Worth, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/55 (2006.01); E21B 10/56 (2006.01);
U.S. Cl.
CPC ...
E21B 10/55 (2013.01); E21B 10/56 (2013.01);
Abstract
A drill bit including a body having a face, a blade disposed on the face, and a row of cutters disposed on the blade. At least some of the cutters may have alternating positive back rake angles. The difference between a majority of back rake angles on adjacent cutters may be less than 20°.