Patents by Inventor E. Sean Cox

E. Sean Cox 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).

  • Patent number: 10400516
    Abstract: A method for manufacturing a roof-bolt drill bit may include forming at least one coupling pocket in a bit body by (1) forming a pocket back surface, (2) forming a first pocket side surface including a substantially planar surface extending from the pocket back surface, and (3) forming a second pocket side surface including a substantially planar surface extending from the pocket back surface, the second pocket side surface being nonparallel to the first pocket side surface. The at least one coupling pocket may be defined by the pocket back surface, the first pocket side surface, and the second pocket side surface. The first pocket side surface may extend at an angle of between approximately 45° and approximately 90° relative to the second pocket side surface, and the first pocket side surface and the second pocket side surface may be separated from one another.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: September 3, 2019
    Assignee: APERGY BMCS ACQUISITION CORPORATION
    Inventor: E. Sean Cox
  • Patent number: 10392866
    Abstract: A subterranean support-bolt drill bit has a bit body rotatable about a central axis, the bit body having a forward end and a rearward end axially spaced away from the forward end. The support-bolt drill bit includes at least one bit cutting element coupled to the bit body, the at least one bit cutting element including a cutting edge. The support-bolt drill bit also includes a central pilot projecting from the bit body beyond the at least one bit cutting element in an axially forward direction, the central pilot including a pilot cutting edge.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: August 27, 2019
    Assignee: APERGY BMCS ACQUISITION CORPORATION
    Inventors: E. Sean Cox, Nathan Andrew Tulett
  • Patent number: 10358875
    Abstract: A roof-bolt drill bit includes a bit body that is rotatable about a central axis, a coupling pocket defined in the bit body, and at least one cutting element mounted to the bit body. The at least one cutting element includes a cutting face, a cutting edge adjacent the cutting face, a back surface opposite the cutting face, and a side surface extending between the cutting edge and the back surface. The roof-bolt drill bit additionally includes a coupling attachment coupled to the bit body, the coupling attachment being positioned adjacent to a portion of the side surface of the cutting element that abuts a side surface of the coupling pocket.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: July 23, 2019
    Assignee: APERGY BMCS ACQUISITION CORPORATION
    Inventors: Russell Roy Myers, E. Sean Cox
  • Patent number: 10352102
    Abstract: A method includes rotating a rotary drill bit about a central axis in a rotational direction. The rotary drill bit includes a bit body having a forward end and a rearward end and a plurality of cutting elements coupled to the bit body. Each of the plurality of cutting elements includes a substrate, polycrystalline diamond bonded to the substrate, a substantially planar, substantially semi-circular cutting face, a cutting edge adjacent the cutting face, and a side surface that extends in a direction substantially perpendicular to the cutting face. The method also includes moving the rotary drill bit in an axially forward direction while rotating the rotary drill bit such that the plurality of cutting elements cut into a formation and removing debris generated by the plurality of cutting elements.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: July 16, 2019
    Assignee: APERGY BMCS ACQUISITION CORPORATION
    Inventors: E. Sean Cox, Russell Roy Myers
  • Patent number: 10184299
    Abstract: A subterranean support-bolt drill bit includes a bit body rotatable about a central axis and at least one cutting element mounted to the bit body. The at least one cutting element has a cutting face, a cutting edge adjacent the cutting face, and a back surface opposite the cutting face. A first recess is defined in the bit body and positioned adjacent the at least one cutting element. A first opening extends through a portion of the bit body, the first opening extending from the first recess. A coupling projection extends from the back surface of the at least one cutting element, the coupling projection being positioned within the first recess and bonded to the coupling recess by brazing. A coupling attachment extends through the first opening and is attached to the coupling projection.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: January 22, 2019
    Assignee: APERGY BMCS ACQUISITION CORPORATION
    Inventor: E. Sean Cox
  • Patent number: 10100582
    Abstract: A method for manufacturing a roof-bolt drill bit includes providing a bit body rotatable about a rotational axis, the bit body having at least two cutting element support structures, each of the at least two cutting element support structures including a mounting surface for mounting a cutting element to the bit body and a trailing support surface. The method includes forming an internal passage within the bit body, the internal passage extending from a rearward opening defined in the rearward end of the bit body through at least a portion of the bit body, and forming a fluid port within each of the at least two cutting element support structures, each fluid port extending from the internal passage to a port opening defined in the corresponding cutting element support structure, each port opening being positioned adjacent to the mounting surface of the corresponding cutting element support structure.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: October 16, 2018
    Assignee: DOVER BMCS ACQUISITION CORPORATION
    Inventor: E. Sean Cox
  • Publication number: 20180252045
    Abstract: A method includes rotating a rotary drill bit about a central axis in a rotational direction. The rotary drill bit includes a bit body having a forward end and a rearward end and a plurality of cutting elements coupled to the bit body. Each of the plurality of cutting elements includes a substrate, polycrystalline diamond bonded to the substrate, a substantially planar, substantially semi-circular cutting face, a cutting edge adjacent the cutting face, and a side surface that extends in a direction substantially perpendicular to the cutting face. The method also includes moving the rotary drill bit in an axially forward direction while rotating the rotary drill bit such that the plurality of cutting elements cut into a formation and removing debris generated by the plurality of cutting elements.
    Type: Application
    Filed: May 7, 2018
    Publication date: September 6, 2018
    Inventors: E. Sean Cox, Russell Roy Myers
  • Publication number: 20180230752
    Abstract: A subterranean support-bolt drill bit has a bit body rotatable about a central axis, the bit body having a forward end and a rearward end axially spaced away from the forward end. The support-bolt drill bit includes at least one bit cutting element coupled to the bit body, the at least one bit cutting element including a cutting edge. The support-bolt drill bit also includes a central pilot projecting from the bit body beyond the at least one bit cutting element in an axially forward direction, the central pilot including a pilot cutting edge.
    Type: Application
    Filed: April 11, 2018
    Publication date: August 16, 2018
    Inventors: E. Sean Cox, Nathan Andrew Tulett
  • Publication number: 20180155989
    Abstract: A method for manufacturing a roof-bolt drill bit may include forming at least one coupling pocket in a bit body by (1) forming a pocket back surface, (2) forming a first pocket side surface including a substantially planar surface extending from the pocket back surface, and (3) forming a second pocket side surface including a substantially planar surface extending from the pocket back surface, the second pocket side surface being nonparallel to the first pocket side surface. The at least one coupling pocket may be defined by the pocket back surface, the first pocket side surface, and the second pocket side surface. The first pocket side surface may extend at an angle of between approximately 45° and approximately 90° relative to the second pocket side surface, and the first pocket side surface and the second pocket side surface may be separated from one another.
    Type: Application
    Filed: January 23, 2018
    Publication date: June 7, 2018
    Inventor: E. Sean Cox
  • Patent number: 9982489
    Abstract: A rotary drill bit for drilling formations in dry-drilling environments is disclosed. The rotary drill bit may include a bit body rotatable about a central axis. The rotary drill bit may also include at least one cutting element coupled to the bit body. The at least one cutting element may have a cutting face, a cutting edge adjacent the cutting face, and a back surface opposite the cutting face. The at least one cutting element may be oriented so that a substantial portion of the cutting edge has a positive clearance angle, which may be defined by a first vector that is normal to the cutting face and a second vector that is tangential to a helical path traveled by the cutting edge during drilling.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: May 29, 2018
    Assignee: DOVER BMCS ACQUISITION CORPORATION
    Inventors: E. Sean Cox, Russell Roy Myers
  • Patent number: 9975210
    Abstract: A method for manufacturing a roof-bolt drill bit includes providing a bit body rotatable about a rotational axis in a rotational direction, the rotational axis extending between a forward end and a rearward end of the bit body, the bit body comprising a mounting region for mounting at least one cutting element to the bit body. The method includes forming at least one primary debris channel in the bit body, the at least one primary debris channel extending from adjacent the mounting region to a portion of the bit body located axially rearward from the mounting region, and forming at least one secondary debris channel in the bit body by machining a portion of the bit body along a substantially straight path to form an intersection with the primary debris channel.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: May 22, 2018
    Assignee: DOVER BMCS ACQUISITION CORPORATION
    Inventors: E. Sean Cox, Russell Roy Myers
  • Patent number: 9951564
    Abstract: A subterranean support-bolt drilling assembly has a drill bit rotatable about a central axis and including at least one cutting edge. The drilling assembly also includes a spacer coupled to a rearward end of the drill bit. A reamer member is coupled to a rearward end of the spacer, the reamer member having at least one cutting element, the at least one cutting element having a cutting edge that extends radially beyond an outer peripheral portion of the drill bit relative to the central axis. A subterranean support-bolt drill bit includes a bit body and at least one cutting element coupled to the bit body. The support-bolt drill bit has a central pilot extending from the bit body in an axially forward direction. The cutting edge of the at least one cutting element extends radially beyond the central pilot relative to a central axis of the drill bit.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: April 24, 2018
    Assignee: DOVER BMCS ACQUISITION CORPORATION
    Inventors: E. Sean Cox, Nathan Andrew Tulett
  • Patent number: 9903164
    Abstract: A roof-bolt drill bit has a bit body rotatable about a central axis and at least one coupling pocket defined in the bit body. At least one coupling pocket is defined in the bit body, the at least one coupling pocket being defined by a pocket back surface, a first pocket side surface having a substantially planar surface extending from the pocket back surface, and a second pocket side surface having a substantially planar surface extending from the pocket back surface, the second pocket side surface being nonparallel to the first pocket side surface. The first pocket side surface extends at an angle of between approximately 45° and approximately 90° relative to the second pocket side surface and the first pocket side surface and the second pocket side surface are separated from one another.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: February 27, 2018
    Assignee: DOVER BMCS ACQUISITION CORPORATION
    Inventor: E. Sean Cox
  • Patent number: 9771760
    Abstract: A rotary drill bit may include a bit body rotatable about a central axis. The rotary drill bit may also include at least one cutting element coupled to the bit body. The at least one cutting element may have a cutting face, a cutting edge adjacent the cutting face, and a back surface opposite the cutting face. The at least one cutting element may be oriented so that a substantial portion of the cutting edge has a positive clearance angle, which may be defined by a first vector that is normal to the cutting face and a second vector that is tangential to a helical path traveled by the cutting edge during drilling.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: September 26, 2017
    Assignee: DOVER BMCS ACQUISITION CORPORATION
    Inventors: E. Sean Cox, Russell Roy Myers
  • Publication number: 20170159368
    Abstract: A roof-bolt drill bit includes a bit body that is rotatable about a central axis, a coupling pocket defined in the bit body, and at least one cutting element mounted to the bit body. The at least one cutting element includes a cutting face, a cutting edge adjacent the cutting face, a back surface opposite the cutting face, and a side surface extending between the cutting edge and the back surface. The roof-bolt drill bit additionally includes a coupling attachment coupled to the bit body, the coupling attachment being positioned adjacent to a portion of the side surface of the cutting element that abuts a side surface of the coupling pocket.
    Type: Application
    Filed: February 16, 2017
    Publication date: June 8, 2017
    Inventors: Russell Roy Myers, E. Sean Cox
  • Patent number: 9617795
    Abstract: A subterranean support-bolt drill bit includes a bit body rotatable about a central axis and at least one cutting element mounted to the bit body. The at least one cutting element has a cutting face, a cutting edge adjacent the cutting face, and a back surface opposite the cutting face. A first recess is defined in the bit body and positioned adjacent the at least one cutting element. A first opening extends through a portion of the bit body, the first opening extending from the first recess. A coupling projection extends from the back surface of the at least one cutting element, the coupling projection being positioned within the first recess. A coupling attachment extends through the first opening and is attached to the coupling projection.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: April 11, 2017
    Assignee: DOVER BMCS ACQUISITION CORPORATION
    Inventor: E. Sean Cox
  • Patent number: 9598910
    Abstract: A roof-bolt drill bit includes a bit body that is rotatable about a central axis, a coupling pocket defined in the bit body, and at least one cutting element mounted to the bit body. The at least one cutting element includes a cutting face, a cutting edge adjacent the cutting face, a back surface opposite the cutting face, and a side surface extending between the cutting edge and the back surface. The roof-bolt drill bit additionally includes a coupling attachment coupled to the bit body, the coupling attachment being positioned adjacent to a portion of the side surface of the cutting element that abuts a side surface of the coupling pocket.
    Type: Grant
    Filed: July 25, 2014
    Date of Patent: March 21, 2017
    Assignee: DOVER BMCS ACQUISITION CORPORATION
    Inventors: Russell Roy Myers, E. Sean Cox
  • Patent number: 9371701
    Abstract: A roof-bolt drill bit includes a bit body rotatable about a central axis and at least one cutting element coupled to the bit body. The bit body has a forward end, a rearward end axially opposite the forward end, and an internal passage defined within the bit body, with the internal passage extending from a rearward opening defined in the rearward end of the bit body through at least a portion of the bit body. The at least one cutting element includes a cutting face, a cutting edge adjacent the cutting face, and a back surface spaced away from the cutting face, the back surface being mounted to the bit body. An opening defined in the bit body is positioned adjacent to the back surface of the at least one cutting element.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: June 21, 2016
    Assignee: DOVER BMCS ACQUISITION CORPORATION
    Inventors: E. Sean Cox, Russell Roy Myers
  • Publication number: 20160123087
    Abstract: A rotary drill bit for drilling formations in dry-drilling environments is disclosed. The rotary drill bit may include a bit body rotatable about a central axis. The rotary drill bit may also include at least one cutting element coupled to the bit body. The at least one cutting element may have a cutting face, a cutting edge adjacent the cutting face, and a back surface opposite the cutting face. The at least one cutting element may be oriented so that a substantial portion of the cutting edge has a positive clearance angle, which may be defined by a first vector that is normal to the cutting face and a second vector that is tangential to a helical path traveled by the cutting edge during drilling.
    Type: Application
    Filed: January 11, 2016
    Publication date: May 5, 2016
    Inventors: E. Sean Cox, Russell Roy Myers
  • Patent number: 9194187
    Abstract: A subterranean support-bolt drilling assembly has a drill bit rotatable about a central axis and including at least one cutting edge. The drilling assembly also includes a spacer coupled to a rearward end of the drill bit. A reamer member is coupled to a rearward end of the spacer, the reamer member having at least one cutting element, the at least one cutting element having a cutting edge that extends radially beyond an outer peripheral portion of the drill bit relative to the central axis. A subterranean support-bolt drill bit includes a bit body and at least one cutting element coupled to the bit body. The support-bolt drill bit has a central pilot extending from the bit body in an axially forward direction. The cutting edge of the at least one cutting element extends radially beyond the central pilot relative to a central axis of the drill bit.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 24, 2015
    Assignee: Dover BMCS Acquisition Corporation
    Inventors: E. Sean Cox, Nathan Andrew Tulett