Patents by Inventor William H. Sherwood
William H. Sherwood 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: 8065935Abstract: A rotary drag bit for drilling a subterranean formation includes a plurality of support elements affixed to the bit body, each forming at least a portion of a cutting element pocket. Each of a plurality of cutting elements has a substantially cylindrical body and is at least partially disposed within a cutter pocket. At least a portion of the substantially cylindrical body of each cutting element is directly secured to at least a portion of a substantially arcuate surface of the bit body. At least a portion of a substantially planar surface of each cutting element matingly engages at least a portion of a substantially planar surface of a support element.Type: GrantFiled: February 27, 2009Date of Patent: November 29, 2011Assignee: Baker Hughes IncorporatedInventors: William H. Sherwood, Jr., L. Richard Borremans, Robert J. Costo, Jr., James L. Duggan
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Patent number: 8011456Abstract: A cutting element for use with a drill bit includes a substrate having a longitudinal axis, a lateral surface substantially symmetric about the longitudinal axis and one or more key elements coupled to the lateral surface. The lateral surface lies between an insertion end and a cutting end of the substrate. The one or more key elements are substantially axially aligned with the longitudinal axis and configured to selectively rotationally locate the substrate in a pocket. A drill bit configured for retaining a cutting element having one or more key elements is also disclosed.Type: GrantFiled: July 18, 2007Date of Patent: September 6, 2011Assignee: Baker Hughes IncorporatedInventor: William H. Sherwood, Jr.
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Publication number: 20090158898Abstract: A rotary drag bit for drilling a subterranean formation includes a plurality of support elements affixed to the bit body, each forming at least a portion of a cutting element pocket. Each of a plurality of cutting elements has a substantially cylindrical body and is at least partially disposed within a cutter pocket. At least a portion of the substantially cylindrical body of each cutting element is directly secured to at least a portion of a substantially arcuate surface of the bit body. At least a portion of a substantially planar surface of each cutting element matingly engages at least a portion of a substantially planar surface of a support element.Type: ApplicationFiled: February 27, 2009Publication date: June 25, 2009Applicant: BAKER HUGHES INCORPORATEDInventors: William H. Sherwood, JR., L. Richard Borremans, Robert J. Costo, JR., James L. Duggan
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Patent number: 7520345Abstract: A rotary drag bit for drilling a subterranean formation includes a plurality of support elements affixed to the bit body, each forming at least a portion of a cutting element pocket. Each of a plurality of cutting elements has a substantially cylindrical body and is at least partially disposed within a cutter pocket. At least a portion of the substantially cylindrical body of each cutting element is directly secured to at least a portion of a substantially arcuate surface of the bit body. At least a portion of a substantially planar surface of each cutting element matingly engages at least a portion of a substantially planar surface of a support element.Type: GrantFiled: March 20, 2007Date of Patent: April 21, 2009Assignee: Baker Hughes IncorporatedInventors: William H. Sherwood, Jr., L. Richard Borremans, Robert J. Costo, Jr., James L. Duggan
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Publication number: 20090020339Abstract: A cutting element for use with a drill bit includes a substrate having a longitudinal axis, a lateral surface substantially symmetric about the longitudinal axis and one or more key elements coupled to the lateral surface. The lateral surface lies between an insertion end and a cutting end of the substrate. The one or more key elements are substantially axially aligned with the longitudinal axis and configured to selectively rotationally locate the substrate in a pocket. A drill bit configured for retaining a cutting element having one or more key elements is also disclosed.Type: ApplicationFiled: July 18, 2007Publication date: January 22, 2009Inventor: William H. Sherwood, JR.
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Publication number: 20090008155Abstract: A drag bit having cutting elements, wherein the cross section of the cutting elements is an oval shape, wherein in one embodiment the major axis is perpendicular to the surface of the drag bit blade. A method is also included, wherein the method comprises using a milling bit having an oval cross section that thereby produces pockets in the drag bit blades for receiving the oval shaped cutting elements. Use of the oval bit also results in a half oval formed at the closed end of the pocket.Type: ApplicationFiled: June 13, 2008Publication date: January 8, 2009Applicant: BAKER HUGHES INCORPORATEDInventor: William H. Sherwood, JR.
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Patent number: 7216565Abstract: A steel body rotary drag bit for drilling a subterranean formation includes a plurality of support elements affixed to the bit body, each forming at least a portion of a cutting element pocket. Each of a plurality of cutting elements has a substantially cylindrical body and is at least partially disposed within a cutter pocket. At least a portion of the substantially cylindrical body of each cutting element is directly secured to at least a portion of a substantially arcuate surface of the bit body. At least a portion of a substantially planar surface of each cutting element matingly engages at least a portion of a substantially planar surface of a support element.Type: GrantFiled: March 14, 2006Date of Patent: May 15, 2007Assignee: Baker Hughes IncorporatedInventors: William H. Sherwood, Jr., L. R. Borremans, Robert J. Costo, Jr., James L. Duggan
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Patent number: 7070011Abstract: A steel body rotary drag bit for drilling a subterranean formation includes a plurality of support elements affixed to the bit body, each forming at least a portion of a cutting element pocket. Each of a plurality of cutting elements has a substantially cylindrical body and is at least partially disposed within a cutter pocket. At least a portion of the substantially cylindrical body of each cutting element is directly secured to at least a portion of a substantially arcuate surface of the bit body. At least a portion of a substantially planar surface of each cutting element matingly engages at least a portion of a substantially planar surface of a support element.Type: GrantFiled: November 17, 2003Date of Patent: July 4, 2006Assignee: Baker Hughes IncorporatedInventors: William H. Sherwood, Jr., L. R. Borremans, Robert J. Costo, Jr., James L. Duggan
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Patent number: 6302224Abstract: Angled insertable drag bit teeth having a front portion at an oblique angle to a shank portion: the front portion is nearly parallel to the direction of thrust during cutting, and is bonded, along a substantial part of its length, to a groove in the bit body. The shank portion extends down into a pocket in the bit body. Preferably the front portion is faced with a superhard material such as polycrystalline-diamond-compact.Type: GrantFiled: May 13, 1999Date of Patent: October 16, 2001Assignee: Halliburton Energy Services, Inc.Inventor: William H. Sherwood, Jr.
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Patent number: 5558170Abstract: A drag bit having a plurality of blades or ribs on its end face has one or more pockets milled into the top surfaces of said blades. A tungsten carbide button or insert is positioned at the gauge diameter to reduce impact on the gauge diameter cutter in each of the fibs. The tungsten carbide button extends to the borehole gauge diameter to stabilize the bit within the borehole to limit bit whirling. The tungsten carbide button extends just forward of at least the final cutter assembly with respect to the direction of bit rotation to take the impact instead of the cutters. An additional tungsten carbide button or a shaped cutter is used along the blades in line with PDC cutting assemblies for limiting the penetration of the PDC cutting assemblies to thereby limit bit whirling or tilting instabilities.Type: GrantFiled: December 6, 1994Date of Patent: September 24, 1996Assignee: Baroid Technology, Inc.Inventors: Gary M. Thigpen, William H. Sherwood, Jr., Coy M. Fielder
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Drill bit having chip breaker polycrystalline diamond compact and hard metal insert at gauge surface
Patent number: 5449048Abstract: A drag bit having a plurality of blades or ribs on its end face has one or more pockets milled into the top surfaces of said blades using a ball-nosed end mill to create a plurality of pockets, each having a spherical or a semi-spherical first end and a second end having a semicircular configuration that intersects with the leading edge face of the rib. A bullet-shaped cutting structure having a spherical first end is brazed into each of the pockets. During the manufacturing process, a pin is brazed into cooperating first and second semicircular receptacles in the spherical end of the cutter and in the semi-spherical end of the pocket, respectively, to prevent the cutter assembly from being pushed up out of the pocket during the drilling operation. In an alternative embodiment, a slot is milled into the top surface of the rib to allow use of a ball-nosed end mill having a reduced diameter shank sized to pass through the slot.Type: GrantFiled: September 26, 1994Date of Patent: September 12, 1995Assignee: Baroid Technology, Inc.Inventors: Gary M. Thigpen, William H. Sherwood, Jr., Coy M. Fielder -
Patent number: 5333699Abstract: A drag bit having a plurality of blades or ribs on its end face has one or more pockets milled into the top surfaces of said blades using a ball nosed end mill to create a plurality of pockets, each having a spherical or a semi-spherical first end and a second end having a semi-circular configuration which intersects with the leading edge face of the rib. A bullet-shaped cutting structure having a spherical first end is brazed into each of the pockets. During the manufacturing process, a pin is brazed into cooperating first and second semi-circular receptacles in the spherical end of the cutter and in the semi-spherical end of the pocket, respectively, to prevent the cutter assembly from being pushed up out of the pocket during the drilling operation. In an alternative embodiment, a slot is milled into the top surface of the rib to allow use of a ball nosed end mill having a reduced diameter shank sized to pass through the slot.Type: GrantFiled: December 23, 1992Date of Patent: August 2, 1994Assignee: Baroid Technology, Inc.Inventors: Gary M. Thigpen, William H. Sherwood
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Patent number: 4767300Abstract: A molding machine having a pair of separable mold elements forming a mold cavity therebetween is arranged for separation along a part-line. Means is provided for controlling the molded product which comprises means for measuring the separation of the mold elements resulting from the introduction of the moldable material into the mold cavity. Means is provided for detecting a predetermined separation of the mold elements, and means is provided for changing the pressure from the first pressure to the second pressure in response to the detection. The separation measuring means is arranged to measure the separation of the mold elements following changing the pressure. Means is provided for sensing when the separation of the mold elements stops increasing and for determining whether the cessation occurs within a predetermined cessation window. Means is provided to generate a signal if the cessation is not within the window to indicate that the cycle has exceeded the product limit.Type: GrantFiled: November 2, 1987Date of Patent: August 30, 1988Assignee: Eastman Kodak CompanyInventors: Frederick J. Buja, Alan B. Miller, William H. Sherwood, James J. Wenskus, Jr.
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Patent number: 4767579Abstract: A method of operating an injection molding machine having a pair of separable mold elements forming a mold cavity therebetween with means for opening and closing the mold elements with means for introducing a moldable material into the mold cavity at a first pressure and for exerting a second pressure on the moldable material as it cures in the cavity. The method controls the molded product and comprises the steps of closing the mold elements and introducing a moldable material into the mold cavity. The separation of the mold elements is measured during the injection of the moldable material and a predetermined separation of the mold elements is detected. Upon detecting the predetermined separation the pressure is changed from the first pressure to the second pressure and the separation of the mold elements is continued. Measurement of mold element separation is continued and the cessation of the increase in the separation of the mold elements is detected.Type: GrantFiled: November 2, 1987Date of Patent: August 30, 1988Assignee: Eastman Kodak CompanyInventors: Frederick J. Buja, Alan B. Miller, William H. Sherwood, James J. Wenskus, Jr.