Outwardly Directed Stub Axle Patents (Class 175/365)
  • Patent number: 9976353
    Abstract: A drill bit includes a bit body having one or more blades extending therefrom and a plurality of cutters secured to the one or more blades. One or more rolling elements are positioned on the bit body, and each rolling element has a rotational axis and provides one or more cylindrical bearing portions rotatable about the rotational axis. Each rolling element is rotatably coupled to the bit body within a housing that defines one or more internal bearing surfaces that partially enclose the one or more cylindrical bearing portions but leaves a full length of the rolling element exposed.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: May 22, 2018
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Brandon James Hinz, Gregory Christopher Grosz, Brian Davies, Seth Anderle
  • Publication number: 20140326515
    Abstract: A drill bit has a bit body, a plurality of blades extending radially from the bit body, at least one rolling cutter pocket disposed on the plurality of blades, and at least one rolling cutter, wherein each rolling cutter is disposed in one of the rolling cutter pockets, and wherein a side surface of the rolling cutter pocket and an outer circumferential surface of the rolling cutter have at least one mating lip and channel formed therein. Further, the rolling cutter may include a cavity extending at least partially along a rotational axis through the rolling cutter, from a bottom surface of the rolling cutter, and a retention pin disposed within the cavity.
    Type: Application
    Filed: December 4, 2012
    Publication date: November 6, 2014
    Applicant: Smith International, Inc.
    Inventors: Jibin Shi, Youhe Zhang
  • Publication number: 20140202773
    Abstract: A roller bit for rock breaking by rotary cutting comprises: a bit body (1), a roller (2) and cutting teeth (3). An included angle ? between a roller journal plane of the bit body and the roller on a bit axis has a range of 0°<?<90°, a journal offset S has a range of ?D/2<S<D/2, wherein D represents a diameter of the bit. Inner row of teeth rings on the bit cuts a center of a borehole bottom, and each row of teeth ring is capable of scraping a borehole wall, and thus the bit has good effects of gauge protection and sidetracking.
    Type: Application
    Filed: February 1, 2012
    Publication date: July 24, 2014
    Inventors: Liang Zhang, Shu Li, Jialin Tian, Defa Zheng
  • Patent number: 8572792
    Abstract: A cleaning tool for a pipe, the cleaning tool being moved inside the pipe while rotating in the main about the longitudinal axis of the pipe, and the cleaning tool including, in addition to a mount, at least two cleaning bodies which are rotatable about their respective individual shafts, the cleaning bodies being provided with an uneven surface, at least part of the external active uneven surface of the cleaning bodies facing the internal mantle surface of the pipe.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: November 5, 2013
    Assignee: Aker Well Service AS
    Inventor: Are Sandkleiva
  • Patent number: 7690446
    Abstract: A roller cone drill bit is disclosed which includes a bit body adapted to be coupled to a drill string. A bearing journal depends from the bit body. A single roller cone is rotatably attached to the bearing journal. The roller cone has a plurality of inserts disposed at selected positions about the cone. The journal defines a rotation angle with respect to an axis of rotation of the bit such that the roller cone includes a wall contact zone and a bottom contact zone. At least one of the inserts disposed in the wall contact zone has an extension portion terminating in a substantially planar upper surface.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: April 6, 2010
    Assignee: Smith International, Inc.
    Inventors: George B. Witman, Peter Wilson, Scott D. McDonough, Michael A. Siracki
  • Patent number: 7401668
    Abstract: A roller cone drill bit is disclosed which includes a bit body adapted to be coupled to a drill string. A bearing journal depends from the bit body. A single roller cone is rotatably attached to the bearing journal. The roller cone has a plurality of inserts disposed at selected positions about the cone. The journal defines a rotation angle with respect to an axis of rotation of the bit such that the roller cone includes a wall contact zone and a bottom contact zone. At least one of the inserts disposed in the wall contact zone has an extension portion terminating in a substantially planar upper surface.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: July 22, 2008
    Assignee: Smith International, Inc.
    Inventors: George Bodo Witman, Peter Wilson, Scott D. McDonough, Michael A. Siracki
  • Patent number: 7320375
    Abstract: A roller cone drill bit and a method for designing thereof. The roller cone drill bit includes a bit body configured to be coupled to a drill string and a journal depending from the bit body. A split roller cone is rotatably attached to the journal. The split roller cone includes an upper section and a lower section. The upper section has a plurality of cutting elements disposed at selected positions thereon. The lower section has a plurality of cutting elements disposed at selected positions thereon. The lower section is able to rotate independently of the upper section.
    Type: Grant
    Filed: July 19, 2005
    Date of Patent: January 22, 2008
    Assignee: Smith International, Inc.
    Inventor: Amardeep Singh
  • Patent number: 7100711
    Abstract: A roller cone drill bit is disclosed which includes a bit body adapted to be coupled to a drill string. A bearing journal depends from the bit body. A single roller cone is rotatably attached to the bearing journal. The roller cone has a plurality of inserts disposed at selected positions about the cone. The journal defines a rotation angle with respect to an axis of rotation of the bit such that the roller cone includes a wall contact zone and a bottom contact zone. At least one of the inserts disposed in the wall contact zone has an extension portion terminating in a substantially planar upper surface.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: September 5, 2006
    Assignee: Smith International, Inc.
    Inventors: George B. Witman, Peter Wilson, Scott D. McDonough, Michael A. Siracki
  • Patent number: 6719073
    Abstract: A roller cone drill bit is disclosed which includes a bit body adapted to be coupled to a drill string, a bearing journal depending from the bit body and a single roller cone rotatably attached to the journal. The roller cone has a plurality of inserts disposed thereon. In one aspect, the inserts have an extension length of at least 0.6 inches. A roller cone drill bit is disclosed, including a bit body, a bearing journal depending from the bit body, and a single roller cone rotatably attached to the journal. The roller cone has a plurality of inserts disposed thereon. In another aspect, the inserts are arranged such that at most about 20 percent of the inserts are crossed substantially at centerlines thereof by any single plane which contains the axis of the cone axis 10 and which crosses at least two of the inserts.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: April 13, 2004
    Assignee: Smith International, Inc.
    Inventors: Ying Xiang, George B. Witman, IV, Michael A. Siracki
  • Publication number: 20030217867
    Abstract: A roller cone drill bit is disclosed which includes a bit body adapted to be coupled to a drill string, a bearing journal depending from the bit body and a single roller cone rotatably attached to the journal. The roller cone has a plurality of inserts disposed thereon. In one aspect, the inserts have an extension length of at least 0.6 inches. A roller cone drill bit is disclosed, including a bit body, a bearing journal depending from the bit body, and a single roller cone rotatably attached to the journal. The roller cone has a plurality of inserts disposed thereon. In another aspect, the inserts are arranged such that at most about 20 percent of the inserts are crossed substantially at centerlines thereof by any single plane which contains the axis of the cone axis 10 and which crosses at least two of the inserts.
    Type: Application
    Filed: May 21, 2002
    Publication date: November 27, 2003
    Inventors: Ying Xiang, George B. Witman, Michael A. Siracki
  • Patent number: 6533051
    Abstract: A roller cone drill bit includes a bit body adapted to be rotated about a longitudinal axis. At least one leg which terminates in a shirttail portion depends from the bit body. The shirttail portion defines a first end face having a first circumferential groove thereon. The first circumferential groove has a radius equal to the radius of a tip of the shirttail portion. A journal is cantilevered from the leg, and a roller cone is rotatably mounted on the journal. The roller cone has a second end face adjacent to the first end face. A second circumferential groove is formed on the second end face.
    Type: Grant
    Filed: September 7, 1999
    Date of Patent: March 18, 2003
    Assignee: Smith International, Inc.
    Inventors: Amardeep Singh, Dennis Cisneros, Sujian J. Huang, Quan V. Nguyen
  • Patent number: 6321858
    Abstract: An improved drill bit for directional drilling includes a housing or headpiece having means at a rear end thereof for mounting the bit on a trailing component of a drill head, and passages for ejection of drilling fluid into a borehole. A first axle is mounted to extend forwardly from a front end of the housing, and a first roller is rotatably mounted on the first axle. The first roller has cutting projections such as carbide studs thereon and extends outside of the outer diameter of the housing by a distance which defines the size of the borehole when the drill bit is rotated over 360 degrees. A second axle is mounted to extend from the front end of the housing, and a second roller is rotatably mounted on the second axle at a position offset from the first axle. The second roller extends slightly outside of the outer diameter of the housing, but by a distance less than the distance the first roller extends outside of the housing.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: November 27, 2001
    Assignee: Earth Tool Company, L.L.C.
    Inventors: Steven W. Wentworth, Robert F. Crane
  • Patent number: 6119797
    Abstract: The invention discloses a single cone earth boring bit which is adapted to be used for boring in oil fields, mining and geological prospecting. The single cone earth boring bit is composed of a bit body (1), gauge blocks (2), active cutting gauge teeth (4), passive gauge teeth (3) and knobby cone (6) etc. On the knobby cone (6), there are inserted wear-resistant teeth intermittently or successively, so as to make the wear resistance of the bit cutting system to be matched with the service life of the bearing. At the same time, gauge blocks (2) are provided on the bit body which may be directly made on or welded to the bit body. On the gauge blocks (2), there are inserted common carbide or wear-resistant active cutting gauge teeth (4) and the passive gauge teeth (3) to enhance the gauge-protecting effect of the bit. Such a single cone earth boring bit can significantly increase the footage of the bit and reduce the cost for drilling.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: September 19, 2000
    Assignee: Kingdream Public Ltd. Co.
    Inventors: Chunling Hong, Xuezhong Liu, Hongmei Huang, Heng Du
  • Patent number: 6026916
    Abstract: A rotary drill arrangement comprising a combination spade drill body having a rotational axis, a shank portion, and a generally planar spade cutter portion with a pair of oppositely directed cutting edges extending radially of the axis, and a rotatable frusto conical cutter mounted on the spade cutter portion adjacent the maximum radial extent of each cutting edge.
    Type: Grant
    Filed: August 1, 1997
    Date of Patent: February 22, 2000
    Assignee: Briese Industrial Technologies, Inc.
    Inventor: Leonard Arden Briese
  • Patent number: 5961185
    Abstract: An improved disc type rolling rock cutter, and novel cutterheads employing such cutters. A rock cutter with an improved, simplified structure, with compact bearing, and smooth, rounded blade shape is disclosed. The design incorporates a cutter ring, bearing, and seal into a single cutter ring assembly. The cutter may be assembled and disassembled for rework by a single worker with simple hand tools. Replacement of worn out cutter rings is done quickly and easily by removing the old ring assembly and then sliding a new ring, bearing, and seal assembly on to the cutter shaft. This simplified assembly is achieved by using a comparatively large shaft which is normally in the range of 40-50% of the ring diameter. The shaft design is sufficiently robust to permit a cantilever mount of the cutter. The unique configuration allows 30,000 lbs. or more thrust to be applied to a 5 inch diameter miniature disc.
    Type: Grant
    Filed: May 6, 1997
    Date of Patent: October 5, 1999
    Assignee: Excavation Engineering Associates, Inc.
    Inventors: James E. Friant, Levent Ozdemir
  • Patent number: 5626201
    Abstract: An improved rolling disc type cutter, and novel cutterheads employing such cutters. The cutter includes a washer surface and a cutter ring assembly. The cutter ring assembly further includes an annular cutter ring with an interior annulus defining portion and an outer ring portion. A bearing assembly substantially fits into the annulus of the cutter ring in a close fitting relationship with the shaft, so that the cutter ring may rotate with respect to and be supported by said shaft. The bearing assembly includes a bearing and a seal which fits between the washer surface and the cutter ring to form a lubricant retaining seal for the interior annulus portion of the cutter ring. A retainer assembly is used to retain the cutter ring assembly on the shaft, and a cap seals the interior annular portion of the cutter ring assembly so that, in cooperation with the seal and the cutter ring, a lubricant retaining chamber is provided.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: May 6, 1997
    Assignee: Excavation Engineering Associates, Inc.
    Inventors: James E. Friant, Levent Ozdemir
  • Patent number: 5147000
    Abstract: A drill bit for use in drilling a well bore comprises a main drill body adapted to be rotated about a substantially vertically disposed axis of rotation and having therein a duct extending longitudinally along such axis, for supplying a drill fluid under pressure to the well bore. At least one generally circular, rotatable cutting discs are mounted on the outside of the main drill body at equally spaced locations, with the cutting discs each having cutting elements disposed in a ring-shaped array. Each of the cutting discs has an axis of rotation disposed at an acute angle to the vertical centerline about which the main drill body rotates. The axis of rotation of each cutting disc is slightly offset laterally in a rearward direction from the centerline of the main drill body, thus to cause the entire bit to be placed in a non-equilibrium position with the rotation of the main body enabling the cutting disc to be positioned to be particularly effective and aggressive in cutting the well bore.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: September 15, 1992
    Assignee: Norvic S.A.
    Inventor: Oscar Kaalstad
  • Patent number: 5064007
    Abstract: A drill bit for use in drilling a well bore in accordance with this invention comprises a main drill body adapted to be rotated about a substantially vertically disposed axis of rotation and having therein a duct extending longitudinally along such axis, for supplying a drill fluid under pressure to the well bore. Three generally circular, rotatable cutting discs are mounted on the outside of the main drill body at equally spaced locations, with the cutting discs each having cutting elements disposed in a ring-shaped array. Each of the cutting discs has an axis of rotation disposed at an acute angle to the vertical centerline about which the main drill body rotates. Importantly, the axis of rotation of each cutting disc is slightly offset from the centerline of the main drill body, thus to cause the cutting discs to be positioned to be particularly effective and aggressive in cutting the well bore.
    Type: Grant
    Filed: June 19, 1990
    Date of Patent: November 12, 1991
    Assignee: Norvic S.A.
    Inventor: Oscar W. Kaalstad
  • Patent number: 4936398
    Abstract: A drill bit for earth boring purposes includes a drill bit body which is rotatable about a drilling axis, a single cutting member mounted rotatably on the body and a counter-reaction member also mounted on the body. The counter-reaction member extends partially downwardly from the body and includes first and second outwardly exposed surfaces. The first surface has a greater surface area than the second surface and is at least partially formed with a circumferentially disposed curvature and a longitudinally disposed curvature with respect to the drilling axis so that it can closely conform to and contact the curvature of the bottom of the hole formed by the drill bit. The first surface of the counter-reaction member acts as a friction pad to counteract the torque effects of rotating the drill bit about the drilling axis and the cutting member engaging in the ground.
    Type: Grant
    Filed: July 7, 1989
    Date of Patent: June 26, 1990
    Assignee: Cledisc International B.V.
    Inventors: David H. Auty, Peter G. Wheeldon
  • Patent number: 4832143
    Abstract: A rotary drilling device is disclosed of the type having a body connected to a rotary drive system for rotation about a primary axis in order to bore into the ground to form a cylindrical hole. The device has a rotary cutting member mounted on one side near the bottom of the body for rotation about an inclined axis of rotation which forms an angle with the primary axis of rotation. A counter-reaction member is disposed on the side of the body away from that carrying the cutting member and near its bottom. The counter-reaction member is constructed and positioned so as to be in contact with only the concave bottom of the hole and so that the maximum radial projection from the primary axis of rotation of any part of the counter-reaction member is less than the radius of the hole, with the highest point of the surface of contact between the counter-reaction member situated below a line defined by the intersection between the concave bottom of the hole and its cylindrical side wall.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: May 23, 1989
    Assignee: Cledisc International B.V.
    Inventors: Oscar Kaalstad, Neil G. Reid
  • Patent number: 4796713
    Abstract: The invention relates to a drill bit which includes a drive arrangement having two opposed drive shafts which are transverse to the drill rod axis, mechanism for driving the shafts and a rock comminuting cutter which is eccentrically mounted on each of the shafts.
    Type: Grant
    Filed: April 14, 1987
    Date of Patent: January 10, 1989
    Inventors: Ulrich W. Bechem, Klaus Bechem, Philip C. Bechem
  • Patent number: 4790397
    Abstract: A rotary drilling device is disclosed of the type having a body connected to a rotary drive system for rotation about a primary axis in order to bore into the ground to form a cylindrical hole. The device has a rotary cutting member mounted on one side near the bottom of the body for rotation about an inclined axis of rotation which forms an angle with the primary axis of rotation. A counter-reaction member is disposed on the side of the body away from that carrying the cutting member and near its bottom. The counter-reaction member is constructed and positioned so as to be in contact with only the concave bottom of the hole and so that the maximum radial projection from the primary axis of rotation of any part of the counter-reaction member is less than the radius of the hole, with the highest point of the surface of contact between the counter-reaction member situated below a line defined by the intersection between the concave bottom of the hole and its cylindrical side wall.
    Type: Grant
    Filed: May 6, 1987
    Date of Patent: December 13, 1988
    Assignee: Cledisc International BV
    Inventors: Oscar Kaalstad, Neil G. Reid
  • Patent number: 4417629
    Abstract: A method of making a rolling cutter drill bit involving the steps of forming a body member having an upper portion adapted to be threaded and passaging therein, forming at least one arcuate recess in the lower end of the body member, providing a lug assembly comprising a lug member having a bearing journal carrying a rolling cutter and an arcuate surface adapted to be received in the recess, and securing the lug assembly in the recess with the arcuate surface of the lug member in engagement with the arcuate recess. A drill bit made according to the foregoing method is also disclosed.
    Type: Grant
    Filed: May 13, 1981
    Date of Patent: November 29, 1983
    Assignee: Reed Rock Bit Company
    Inventor: Duane W. Wallace
  • Patent number: 4359114
    Abstract: A raise bit (10) is constructed with a plurality of housings (30) secured to cutter carrier frame (14) and disposed about drive stem (12). Housings (30) include a rectangularly-shaped mounting box (48) for rotatably supporting an outboard roller cutter (28). Each housing (30) also includes an upright wall (34) having an upwardly tapered lug (40) extending along the upper edge portion thereof for seating within a correspondingly shaped groove (82) formed along the underside of shoulder section (78) of an L-shaped hanger bracket (68). A roller shell (72) is antifrictionally mounted on a spindle (70) extending outwardly from an upright section (76) of hanger bracket (68). Bracket (68) is held in hooked relationship over lug (40) by a pair of capscrews (74) extending downwardly through clearance holes formed in upright section (76) and engaging within a lower portion of upright wall (34).
    Type: Grant
    Filed: December 10, 1980
    Date of Patent: November 16, 1982
    Assignee: Robbins Machine, Inc.
    Inventors: James D. Miller, Worm Lund, Donald W. Jones
  • Patent number: 4298080
    Abstract: A compact and relatively lightweight rock cutting tool comprises a pair of disc cutters disposed in parallel, the disc cutters having circumferential cutting edges; a support member for the cutters disposed radially inwardly of the cutting edges thereof and on which each cutter is borne for rotation; and a mounting pedestal to which the member is attached between planes defined by the respective cutting edges of the cutters, preferably mid-way between the planes. Preferably each cutter is borne for rotation independently of the other and the cutting edges of the disc cutters are separated by 80 to 100 mm. The overall width of a tool with a separation of 90 mm between the cutting edges and with cutters of 330 mm diameter is only 180 mm which is about half that of an equivalent tool of conventional construction. With the tool of the invention therefore either more tools may be fitted to a given cutting head or more room made available at the cutting head for access to the tools and for the removal of cut rock.
    Type: Grant
    Filed: May 25, 1978
    Date of Patent: November 3, 1981
    Assignee: Secretary of State for Transport in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
    Inventor: Henry J. Hignett