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:
Feb. 21, 2017
Filed:
Sep. 21, 2005
Applicants:
Peter Thomas Cariveau, Spring, TX (US);
Prabhakaran K. Centala, The Woodlands, TX (US);
Zhehua Zhang, The Woodlands, TX (US);
Inventors:
Peter Thomas Cariveau, Spring, TX (US);
Prabhakaran K. Centala, The Woodlands, TX (US);
Zhehua Zhang, The Woodlands, TX (US);
Assignee:
SMITH INTERNATIONAL, INC., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/12 (2006.01); E21B 10/16 (2006.01);
U.S. Cl.
CPC ...
E21B 10/12 (2013.01); E21B 10/16 (2013.01);
Abstract
The invention provides an improved drill bit and a method for designing thereof. The drill bit includes a bit body, a journal depending from the bit body, and a disc rotatably mounted on the journal. The disc of the drill bit has PDC cutting elements disposed on it. Also provided is an improved cutting structure for the discs of the drill bit. The cutting structure includes a portion that is comprised from PDC.