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:
Sep. 22, 2015
Filed:
Nov. 26, 2012
Applicant:
National Oilwell Dht, L.p., Conroe, TX (US);
Inventors:
Thang Vo, Houston, TX (US);
Tjandra Sukendro, Conroe, TX (US);
Assignee:
NATIONAL OILWELL DHT, L.P., Conroe, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/16 (2006.01); B24D 18/00 (2006.01); E21B 10/52 (2006.01); E21B 10/56 (2006.01);
U.S. Cl.
CPC ...
E21B 10/16 (2013.01); B24D 18/0009 (2013.01); E21B 10/52 (2013.01); E21B 10/56 (2013.01);
Abstract
An insert for a rolling cone drill bit includes a base portion having a central axis. The base portion is configured to be seated in a mating socket in a cone cutter of the rolling cone drill bit. In addition, the insert includes a cutting portion extending from the base portion. The base portion has a radially outer surface including a non-cylindrical axial retention feature configured to prevent the insert from moving axially out of the mating socket or a non-cylindrical torque holding feature configured to prevent the insert from rotating relative to the cone cutter.