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. 26, 2020
Filed:
Oct. 06, 2017
Applicant:
Kennametal Inc., Latrobe, PA (US);
Inventors:
Paul D. Prichard, Greensburg, PA (US);
John Brosnahan, North Huntingdon, PA (US);
Roger Stark, Jefferson Hills, PA (US);
Assignee:
KENNAMETAL INC., Latrobe, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/46 (2006.01); B33Y 10/00 (2015.01); C22C 29/08 (2006.01); E21B 10/08 (2006.01); E21B 10/43 (2006.01); B22F 5/00 (2006.01); E21B 10/627 (2006.01); B22F 3/105 (2006.01); C04B 35/56 (2006.01); E21B 10/50 (2006.01); B33Y 80/00 (2015.01);
U.S. Cl.
CPC ...
E21B 10/46 (2013.01); B22F 3/1055 (2013.01); B22F 5/00 (2013.01); B33Y 10/00 (2014.12); C04B 35/5626 (2013.01); C22C 29/08 (2013.01); E21B 10/08 (2013.01); E21B 10/43 (2013.01); E21B 10/50 (2013.01); E21B 10/627 (2013.01); B22F 2005/001 (2013.01); B33Y 80/00 (2014.12);
Abstract
Earth boring tools are described herein employing sintered cemented carbide compositions in conjunction with thin-walled architectures. In some embodiments, an earth boring tool comprises a drill bit comprising a cutting portion and a body portion, the body portion including a sintered cemented carbide shell having wall thickness of 5 percent to 25 percent of the drill bit diameter.