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:
Aug. 11, 2015
Filed:
May. 16, 2008
Applicants:
Bala Durairajan, Houston, TX (US);
Jonan Fulenchek, Tomball, TX (US);
Gregory T. Lockwood, Pearland, TX (US);
Inventors:
Bala Durairajan, Houston, TX (US);
Jonan Fulenchek, Tomball, TX (US);
Gregory T. Lockwood, Pearland, TX (US);
Assignee:
Smith International, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/00 (2006.01); E21B 10/46 (2006.01); E21B 10/54 (2006.01); E21B 10/60 (2006.01);
U.S. Cl.
CPC ...
E21B 10/46 (2013.01); E21B 10/54 (2013.01); E21B 10/602 (2013.01);
Abstract
A drill bit that includes a body having a lower end face for engaging a rock formation. The end face having a plurality of raised ribs extending from the face of the bit body and separated by a plurality of channels therebetween At least one of the plurality of ribs has a varying width along at least a portion of a rib height.