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:
Jun. 05, 2018
Filed:
May. 11, 2016
Applicant:
Varel International Ind., L.p., Carrollton, TX (US);
Inventors:
Thomas Gallifet, Tomball, TX (US);
Matthew Charles Stroever, Spring, TX (US);
Assignee:
VAREL INTERNATIONAL IND., L.P., Carrollton, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/52 (2006.01); B23K 31/02 (2006.01); C23C 8/04 (2006.01); C23C 8/20 (2006.01); C23C 8/64 (2006.01); C23C 8/80 (2006.01); E21B 10/20 (2006.01); C23C 8/22 (2006.01);
U.S. Cl.
CPC ...
E21B 10/52 (2013.01); B23K 31/02 (2013.01); C23C 8/04 (2013.01); C23C 8/20 (2013.01); C23C 8/22 (2013.01); C23C 8/64 (2013.01); C23C 8/80 (2013.01); E21B 10/20 (2013.01);
Abstract
A method of manufacturing a roller cone for a drill bit includes: selectively carburizing a land of the roller cone between a plurality of spots on the land for protection against erosion; after carburization, forming sockets in the roller cone at the spots; and mounting cermet inserts in the sockets.