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:
Mar. 31, 2009
Filed:
Mar. 31, 2006
Applicants:
Terry W. Kirk, Fayetteville, AR (US);
Brian R. Nussbaum, Houston, TX (US);
Jon W. Bitler, Fayetteville, AR (US);
Inventors:
Terry W. Kirk, Fayetteville, AR (US);
Brian R. Nussbaum, Houston, TX (US);
Jon W. Bitler, Fayetteville, AR (US);
Assignee:
Kennametal Inc., Latrobe, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/56 (2006.01);
U.S. Cl.
CPC ...
Abstract
A hard composite cutting insert useful for cutting strata such as earth or rock that includes a body that is tough. The body contains a member that is harder than the body (i.e., has a harder region). The combination of the tough body with the harder member (or region) embedded therein provides a hard composite cutting insert with advantageous properties when used in conjunction with a bit body for impinging upon, and thereby disintegrating, the earth strata.