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:
Mar. 08, 2016
Filed:
Dec. 18, 2012
Applicant:
Smith International, Inc., Houston, TX (US);
Inventors:
Yi Fang, Orem, UT (US);
Scott L. Horman, Provo, UT (US);
Assignee:
Smith International, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/46 (2006.01); E21B 10/55 (2006.01); E21B 10/567 (2006.01); E21B 10/573 (2006.01);
U.S. Cl.
CPC ...
E21B 10/46 (2013.01); E21B 10/5673 (2013.01); E21B 10/5735 (2013.01);
Abstract
An insert for a drill bit may include a substrate; a working layer of polycrystalline diamond material on the uppermost end of the insert, wherein the polycrystalline diamond material includes a plurality of interconnected diamond grains; and a binder material; and an inner transition layer between the working layer and the substrate, wherein the inner transition layer is adjacent to the substrate; wherein the inner transition layer has a hardness that is at least 500 HV greater than the hardness of the substrate.