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. 07, 2011
Filed:
Apr. 28, 2005
Prakash K. Mirchandani, Hampton Cove, AL (US);
Jimmy W. Eason, The Woodlands, TX (US);
James J. Oakes, Madison, AL (US);
James C. Westhoff, The Woodlands, TX (US);
Gabriel B. Collins, Huntsville, AL (US);
John H. Stevens, Houston, TX (US);
Steven G. Caldwell, Hendersonville, TN (US);
Alfred J. Mosco, Spring, TX (US);
Prakash K. Mirchandani, Hampton Cove, AL (US);
Jimmy W. Eason, The Woodlands, TX (US);
James J. Oakes, Madison, AL (US);
James C. Westhoff, The Woodlands, TX (US);
Gabriel B. Collins, Huntsville, AL (US);
John H. Stevens, Houston, TX (US);
Steven G. Caldwell, Hendersonville, TN (US);
Alfred J. Mosco, Spring, TX (US);
TDY Industries, Inc., Pittsburgh, PA (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
The present invention relates to compositions and methods for forming a bit body for an earth-boring bit. The bit body may comprise hard particles, wherein the hard particles comprise at least one of carbide, nitride, boride, and oxide and solid solutions thereof, and a binder binding together the hard particles. The binder may comprise at least one metal selected from cobalt, nickel, and iron, and, optionally, at least one melting point reducing constituent selected from a transition metal carbide in the range of 30 to 60 weight percent, boron up to 10 weight percent, silicon up to 20 weight percent, chromium up to 20 weight percent, and manganese up to 25 weight percent, wherein the weight percentages are based on the total weight of the binder. In addition, the hard particles may comprise at least one of (i) cast carbide (WC+W2C) particles, (ii) transition metal carbide particles selected from the carbides of titanium, chromium, vanadium, zirconium, hafnium, tantalum, molybdenum, niobium, and tungsten, and (iii) sintered cemented carbide particles.