Patents by Inventor Danielle V. Roberts
Danielle V. Roberts has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8104550Abstract: Earth-boring tools include wear-resistant materials disposed in at least one recess formed in an exterior surface of a body thereof. Exposed surfaces of the wear-resistant material are substantially level with exterior surfaces of the body adjacent the wear-resistant material. In some embodiments, recesses may be formed in formation-engaging surfaces of blades of earth-boring rotary tools, adjacent one or more inserts secured to bodies of earth-boring tools, or adjacent one or more cutting elements secured to bodies of earth-boring tools. Methods of forming earth-boring tools include filling one or more recesses formed in an exterior surface of a body with wear-resistant material and causing exposed surfaces of the wear-resistant material to be substantially level with the exterior surface of the body.Type: GrantFiled: September 28, 2007Date of Patent: January 31, 2012Assignee: Baker Hughes IncorporatedInventors: James L. Overstreet, Michael L. Doster, Mark E. Morris, Kenneth E. Gilmore, Robert M. Welch, Danielle V. Roberts
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Patent number: 7861806Abstract: A shank configuration for rotary drill bits is disclosed for positioning of the shank in relation to a bit body. A tapered surface or feature of the shank may be configured and sized to matingly engage a complementarily shaped surface or feature of the drill bit body and thereby become centered or positioned in relation thereto. A deformable element may be disposed between the shank and bit body. Also, the shank may comprise a material having a carbon equivalent of less than about 0.35%. A multi-pass weld procedure may be employed to affix the shank and bit body to one another wherein welds may be formed so that one weld originates at a circumferential position that differs from the origination circumferential position of its immediately preceding weld by at least about 90°. Further, a stress state may be developed within the multi-pass weld. A method of manufacture is also disclosed.Type: GrantFiled: September 25, 2009Date of Patent: January 4, 2011Assignee: Baker Hughes IncorporatedInventors: Anton F. Zahradnik, Eric C. Sullivan, R. Scot Smith, Daniel E. Ruff, Danielle V. Roberts, Alan J. Massey
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Patent number: 7836979Abstract: A drill bit having a bit body includes a blade face surface on at least one blade extending longitudinally and radially outward over a face of the bit body. The blade face surface of the at least one blade includes a contact zone and a sweep zone. The sweep zone rotationally trails the contact zone with respect to a direction of intended bit rotation about a longitudinal axis of the bit body provides reduce rubbing contact when engaging with a subterranean formation.Type: GrantFiled: October 29, 2008Date of Patent: November 23, 2010Assignee: Baker Hughes IncorporatedInventors: James C. Green, Michael L. Doster, Jason E. Hoines, Robert M. Welch, Danielle V. Roberts
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Publication number: 20100012392Abstract: A shank configuration for rotary drill bits is disclosed for positioning of the shank in relation to the bit body. A tapered surface or feature of the shank may be configured and sized to matingly engage a complementarily shaped surface or feature of the drill bit body and thereby become centered or positioned in relation thereto. A deformable element may be disposed between the shank and bit body. Also, the shank may comprise a material having a carbon equivalent of less than about 0.35%. A multi-pass weld procedure may be employed to affix the shank and bit body to one another wherein welds may be formed so that one weld originates at a circumferential position that differs from the origination circumferential position of its immediately preceding weld by at least about 90°. Further, a stress state may be developed within the multi-pass weld. A method of manufacture is also disclosed.Type: ApplicationFiled: September 25, 2009Publication date: January 21, 2010Applicant: BAKER HUGHES INCORPORATEDInventors: Anton F. Zahradnik, Eric C. Sullivan, R. Scot Smith, Daniel E. Ruff, Danielle V. Roberts, Alan J. Massey
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Patent number: 7600589Abstract: A shank configuration for rotary drill bits, is disclosed for positioning of the shank in relation to the bit body. A tapered surface or feature of the shank may be configured and sized to matingly engage a complementarily shaped surface or feature of the drill bit body and thereby become centered or positioned in relation thereto. A deformable element may be disposed between the shank and bit body. Also, the shank may comprise a material having a carbon equivalent of less than about 0.35%. A multi-pass weld procedure may be employed to affix the shank and bit body to one another wherein welds may be formed so that one weld originates at a circumferential position that differs from the origination circumferential position of its immediately preceding weld by at least about 90%. Further, a stress state may be developed within the multi-pass weld. A method of manufacture is also disclosed.Type: GrantFiled: November 29, 2007Date of Patent: October 13, 2009Assignee: Baker Hughes IncorporatedInventors: Anton F. Zahradnik, Eric C. Sullivan, R. Scot Smith, Daniel E. Ruff, Danielle V. Roberts, Alan J. Massey
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Patent number: 7594454Abstract: A shank configuration for rotary drill bits is disclosed for positioning of the shank in relation to the bit body. A tapered surface or feature of the shank may be configured and sized to matingly engage a complementarily shaped surface or feature of the drill bit body and thereby become centered or positioned in relation thereto. A deformable element may be disposed between the shank and bit body. Also, the shank may comprise a material having a carbon equivalent of less than about 0.35%. A multi-pass weld procedure may be employed to affix the shank and bit body to one another wherein welds may be formed so that one weld originates at a circumferential position that differs from the origination circumferential position of its immediately preceding weld by at least about 90°. Further, a stress state may be developed within the multi-pass weld. A method of manufacture is also disclosed.Type: GrantFiled: November 29, 2007Date of Patent: September 29, 2009Assignee: Baker Hughes IncorporatedInventors: Anton F. Zahradnik, Eric C. Sullivan, R. Scot Smith, Daniel E. Ruff, Danielle V. Roberts, Alan J. Massey
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Publication number: 20090107730Abstract: A drill bit having a bit body includes a blade face surface on at least one blade extending longitudinally and radially outward over a face of the bit body. The blade face surface of the at least one blade includes a contact zone and a sweep zone. The sweep zone rotationally trails the contact zone with respect to a direction of intended bit rotation about a longitudinal axis of the bit body provides reduce rubbing contact when engaging with a subterranean formation.Type: ApplicationFiled: October 29, 2008Publication date: April 30, 2009Inventors: James C. Green, Michael L. Doster, Jason E. Hoines, Robert M. Welch, Danielle V. Roberts
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Patent number: 7472764Abstract: A shank configuration for rotary drill bits is disclosed for positioning of the shank in relation to the bit body. A tapered surface or feature of the shank may be configured and sized to matingly engage a complementarily shaped surface or feature of the drill bit body and thereby become centered or positioned in relation thereto. A deformable element may be disposed between the shank and bit body. Also, the shank may comprise a material having a carbon equivalent of less than about 0.35%. A multi-pass weld procedure may be employed to affix the shank and bit body to one another wherein welds may be formed so that one weld originates at a circumferential position that differs from the origination circumferential position of its immediately preceding weld by at least about 90°. Further, a stress state may be developed within the multi-pass weld. A method of manufacture is also disclosed.Type: GrantFiled: March 25, 2005Date of Patent: January 6, 2009Assignee: Baker Hughes IncorporatedInventors: Anton F. Zahradnik, Eric C. Sullivan, R. Scot Smith, Daniel E. Ruff, Danielle V. Roberts, Alan J. Massey