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:
Jul. 03, 2012
Filed:
May. 02, 2011
Applicants:
Alfazazi Dourfaye, Paris, FR;
Michel DE Reynal, Arthez de Bearn, FR;
Inventors:
Alfazazi Dourfaye, Paris, FR;
Michel De Reynal, Arthez de Bearn, FR;
Assignee:
Varel International, Ind., L.P., Carrollton, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/00 (2006.01); E21B 10/46 (2006.01);
U.S. Cl.
CPC ...
Abstract
A drill bit includes a plurality of continuous segments impregnated with diamond that are each mounted to form a corresponding blade. The regions between the blades define a plurality of fluid passages on the bit face. The blades extend radially outwardly to the gage. The continuous segments may be either straight or spiral in design. Furthermore, the design of the segments supports varying one or more of: diamond content, width, back rake angle and/or relief angle along a length of the segment.