ROLLER CONES HAVING NON INTEGRAL CUTTING STRUCTURES, DRILL BITS INCLUDING SUCH CONES, AND METHODS OF FORMING SAME - Patent 2376738

(19)

(11)

EP 2 376 738 A2

(12)

(88)	Date of publication A3:
	21.10.2010

(43)	Date of publication:
	19.10.2011 Bulletin 2011/42

(21)	Application number: 10732065.7

(22)	Date of filing: 14.01.2010

(51)

International Patent Classification (IPC):

E21B 10/08^(2006.01)
C23C 24/08^(2006.01)

E21B 10/50^(2006.01)
B23K 9/04^(2006.01)

(86)	International application number:
	PCT/US2010/020966

(87)	International publication number:
	WO 2010/083265 (22.07.2010 Gazette 2010/29)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

(30)

Priority:

15.01.2009 US 354604

(71)	Applicant: Baker Hughes Incorporated
	Houston, TX 77210 (US)

(72)	Inventors:
	BUSKE, Robert, J. The Woodlands, TX 77380 (US) OVERSTREET, James, L. The Woodlands, TX 77380 (US)

(74)	Representative: Hano, Christian et al
	v. Füner Ebbinghaus Finck Hano Patentanwälte Mariahilfplatz 3 81541 München 81541 München (DE)

(54)	ROLLER CONES HAVING NON INTEGRAL CUTTING STRUCTURES, DRILL BITS INCLUDING SUCH CONES, AND METHODS OF FORMING SAME