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:
Feb. 02, 2010
Filed:
May. 18, 2007
James L. Overstreet, Tomball, TX (US);
Robert J. Buske, The Woodlands, TX (US);
Kenneth E. Gilmore, Cleveland, TX (US);
Jeremy K. Morgan, Midway, TX (US);
James L. Overstreet, Tomball, TX (US);
Robert J. Buske, The Woodlands, TX (US);
Kenneth E. Gilmore, Cleveland, TX (US);
Jeremy K. Morgan, Midway, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
A drill bit having steel teeth is provided with a combination of hardfacing materials on the teeth. The bases of the teeth are hardfaced with nickel-based materials to significantly reduce any potential cracking therein. Portions of the supporting cones adjacent the teeth also may be fabricated with the nickel-based hardfacing. All other portions of the teeth are hardfaced with iron-based materials.