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. 29, 2015
Filed:
Aug. 02, 2011
Carl Hoffmaster, Houston, TX (US);
Shelton W Alsup, Houston, TX (US);
Michael G. Azar, The Woodlands, TX (US);
Thomas W. Oldham, The Woodlands, TX (US);
Stuart R. Oliver, Magnolia, TX (US);
Sidney J. Isnor, Calgary, CA;
Carl Hoffmaster, Houston, TX (US);
Shelton W Alsup, Houston, TX (US);
Michael G. Azar, The Woodlands, TX (US);
Thomas W. Oldham, The Woodlands, TX (US);
Stuart R. Oliver, Magnolia, TX (US);
Sidney J. Isnor, Calgary, CA;
Smith International, Inc., Houston, TX (US);
Abstract
A cutting tool includes a tool body having a longitudinal axis and a cutting face, a plurality of blades spaced azimuthally about the cutting face and extending at least laterally through a gage region, and a plurality of cutters disposed along the blades. At least two different types of back reaming elements may be disposed on a transitional surface between the gage region of at least one blade and a connection end of the cutting tool. Alternatively, at least one back reaming element may be disposed on a transitional surface between the gage region of at least one blade and a connection end of the cutting tool, and a wear resistant material provided on or in the transitional surface.