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:
Jan. 06, 2015
Filed:
Dec. 10, 2010
Applicants:
Gregory T. Lockwood, Pearland, TX (US);
Youhe Zhang, Spring, TX (US);
Yuelin Shen, Houston, TX (US);
Inventors:
Gregory T. Lockwood, Pearland, TX (US);
Youhe Zhang, Spring, TX (US);
Yuelin Shen, Houston, TX (US);
Assignee:
Smith International, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21K 5/04 (2006.01); E21B 10/42 (2006.01); C22C 29/08 (2006.01); C22C 29/06 (2006.01); E21B 10/55 (2006.01); C22C 1/05 (2006.01); B22F 5/00 (2006.01);
U.S. Cl.
CPC ...
E21B 10/42 (2013.01); C22C 29/08 (2013.01); B22F 2005/002 (2013.01); C22C 29/06 (2013.01); E21B 10/55 (2013.01); C22C 1/051 (2013.01);
Abstract
A method of manufacturing a drill bit having a bit body and a plurality of blades extending radially from the bit body is disclosed, wherein the method includes adhering a first matrix material to at least a portion of a mold cavity corresponding to an outer surface of the bit body, loading a second matrix material into the other portions of the mold cavity, and heating the mold contents to form a matrix body drill bit.