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. 19, 2018
Filed:
Jan. 28, 2014
Applicant:
Nov Downhole Eurasia Limited, Stonehouse, Gloucestershire, GB;
Inventors:
Alan Honggen Jiang, Kingsway, GB;
Mark Jonathan Francis, Randwick, GB;
Terry Matthias, Upton St. Leonards, GB;
Haydn G. Smith, Dursley, GB;
Assignee:
NOV Downhole Eurasia Limited, Gloucestershire, GB;
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/567 (2006.01); E21B 10/54 (2006.01); E21B 10/56 (2006.01);
U.S. Cl.
CPC ...
E21B 10/567 (2013.01); E21B 10/54 (2013.01); E21B 10/5673 (2013.01); E21B 2010/561 (2013.01);
Abstract
A cutting element comprises a table of superhard material bonded to a substrate, wherein the table defines a cutting edge and has a chamfered peripheral edge, and a groove in a sidewall of the cutting element passes through the chamfered peripheral edge, so as to reduce the depth of the chamfer at the location of the groove.