Patents by Inventor Terry J. Koltermann

Terry J. Koltermann 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: 10151148
    Abstract: An earth boring bit has a bit body with a depending bearing pin, a cone rotatably mounted on the bearing pin, a seal gland between the cone and the bearing pin, and a seal assembly located in the seal gland. The seal assembly includes an annular metallic spring encircling the bearing pin. The spring has a geometric center line that extends in a circle around the bearing pin. The spring is elastically deformable in radial directions relative to the center line. An elastomeric layer is located on an exterior side of the spring and is biased by the spring against a surface of the seal gland.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: December 11, 2018
    Assignee: Baker Hughes Incorporated
    Inventors: David A. Curry, Terry J. Koltermann, Chih C. Lin, Stuart Hall
  • Patent number: 9249629
    Abstract: A backup ring for a face seal in a roller cone bit is configured to resist wear from drilling fluids present adjacent exposed faces of the backup ring. Portions are removed from an exposed end face in a variety of shapes while the hardness of the material is increased. The removal of material offsets an increase in force that would be transmitted through the backup ring on face seal assembly due to flexing. A spring can optionally be included in the removed material location. Another way is to increase the edge density of all or part of the exposed edges while leaving the interior portions unaffected by using electron beam radiation to increase the crosslink density or by other techniques that allow a unitary structure with a more durable edge region.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: February 2, 2016
    Assignee: Baker Hughes Incorporated
    Inventors: Chih Lin, Terry J. Koltermann, Anton F. Zahradnik, Gregory L. Ricks
  • Publication number: 20150330152
    Abstract: A backup ring for a face seal in a roller cone bit is configured to resist wear from drilling fluids present adjacent exposed faces of the backup ring. Portions are removed from an exposed end face in a variety of shapes while the hardness of the material is increased. The removal of material offsets an increase in force that would be transmitted through the backup ring on face seal assembly due to flexing. A spring can optionally be included in the removed material location. Another way is to increase the edge density of all or part of the exposed edges while leaving the interior portions unaffected by using electron beam radiation to increase the crosslink density or by other techniques that allow a unitary structure with a more durable edge region.
    Type: Application
    Filed: July 24, 2015
    Publication date: November 19, 2015
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Chih Lin, Terry J. Koltermann, Anton F. Zahradnik, Gregory L. Ricks
  • Patent number: 9157280
    Abstract: A backup ring for a face seal in a roller cone bit is configured to resist wear from drilling fluids present adjacent exposed faces of the backup ring. Portions are removed from an exposed end face in a variety of shapes while the hardness of the material is increased. The removal of material offsets an increase in force that would be transmitted through the backup ring on face seal assembly due to flexing. A spring can optionally be included in the removed material location. Another way is to increase the edge density of all or part of the exposed edges while leaving the interior portions unaffected by using electron beam radiation to increase the crosslink density or by other techniques that allow a unitary structure with a more durable edge region.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: October 13, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Chih Lin, Terry J. Koltermann, Anton F. Zahradnik, Alejandro Flores, Gregory L. Ricks
  • Publication number: 20150144406
    Abstract: An earth boring bit has a bit body with a depending bearing pin, a eons rotatably mounted on the hearing pin, a seal gland between the cone and the bearing pin, and a seal assembly located in the seal gland. The seal assembly includes an annular metallic spring encircling the bearing pin. The spring has a geometric center line that extends in a circle around the bearing pin. The spring is elastically deform able in radial directions relative to the center line. An elastomeric layer is located on an exterior side of the spring and is biased by the spring against a surface of the seal gland.
    Type: Application
    Filed: January 26, 2015
    Publication date: May 28, 2015
    Inventors: David A. Curry, Terry J. Koltermann, Chih C. Lin, Stuart Hall
  • Patent number: 8967301
    Abstract: An earth boring bit has a bit body with a depending bearing pin, a cone rotatably mounted on the bearing pin, a seal gland between the cone and the bearing pin, and a seal assembly located in the seal gland. The seal assembly includes an annular metallic spring encircling the bearing pin. The spring has a geometric center line that extends in a circle around the bearing pin. The spring is elastically deformable in radial directions relative to the center line. An elastomeric layer is located on an exterior side of the spring and is biased by the spring against a surface of the seal gland.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: March 3, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: David A. Curry, Terry J. Koltermann, Chih C. Lin, Stuart Hall
  • Publication number: 20140225328
    Abstract: A backup ring for a face seal in a roller cone bit is configured to resist wear from drilling fluids present adjacent exposed faces of the backup ring. Portions are removed from an exposed end face in a variety of shapes while the hardness of the material is increased. The removal of material offsets an increase in force that would be transmitted through the backup ring on face seal assembly due to flexing. A spring can optionally be included in the removed material location. Another way is to increase the edge density of all or part of the exposed edges while leaving the interior portions unaffected by using electron beam radiation to increase the crosslink density or by other techniques that allow a unitary structure with a more durable edge region.
    Type: Application
    Filed: February 8, 2013
    Publication date: August 14, 2014
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Chih Lin, Terry J. Koltermann, Anton F. Zahradnik, Gregory L. Ricks
  • Publication number: 20140225327
    Abstract: A backup ring for a face seal in a roller cone bit is configured to resist wear from drilling fluids present adjacent exposed faces of the backup ring. Portions are removed from an exposed end face in a variety of shapes while the hardness of the material is increased. The removal of material offsets an increase in force that would be transmitted through the backup ring on face seal assembly due to flexing. A spring can optionally be included in the removed material location. Another way is to increase the edge density of all or part of the exposed edges while leaving the interior portions unaffected by using electron beam radiation to increase the crosslink density or by other techniques that allow a unitary structure with a more durable edge region.
    Type: Application
    Filed: February 8, 2013
    Publication date: August 14, 2014
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Chih Lin, Terry J. Koltermann, Anton F. Zahradnik, Alejandro Flores, Gregory L. Ricks
  • Patent number: 8028770
    Abstract: A rock drilling bit having PDC radial bearings has journal and cone bearing surfaces with increased contact area to increase load support. The radius of curvature of the bearing pin journal and cone bearing surfaces are matched or conformed on the bearing pressure side. The conformal journal surfaces may be formed on the main journal bearing, the pilot pin radial bearing, or both surfaces. In addition, diamond inlays may be located on the bearing surfaces of the cone, the bearing pin, or both components.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: October 4, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Aaron J. Dick, Chih Lin, Terry J. Koltermann, Anton F. Zahradnik, Daniel E. Scott, Don Q. Nguyen, Eric Sullivan, Scott Shiqiang Shu, Craig Hodges Cooley, Timothy Nathan Sexton
  • Publication number: 20110187058
    Abstract: An earth boring bit has a bit body with a depending bearing pin, a cone rotatably mounted on the bearing pin, a seal gland between the cone and the bearing pin, and a seal assembly located in the seal gland. The seal assembly includes an annular metallic spring encircling the bearing pin. The spring has a geometric center line that extends in a circle around the bearing pin. The spring is elastically deformable in radial directions relative to the center line. An elastomeric layer is located on an exterior side of the spring and is biased by the spring against a surface of the seal gland.
    Type: Application
    Filed: February 3, 2010
    Publication date: August 4, 2011
    Applicant: Baker Hughes Incorporated
    Inventors: David A. Curry, Terry J. Koltermann, Chih C. Lin, Stuart Hall
  • Patent number: 7975779
    Abstract: An apparatus for retaining a roller cone on a bearing pin of a drill bit body that includes a drill bit body; a bearing pin coupled to the drill bit body; a retention member coupled to the bearing pin; a roller cone coupled to the retention member; and a torque transfer member coupled to the retention member and the roller cone adapted to selectively transfer torque between the retention member and the roller cone.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: July 12, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Anton F. Zahradnik, Don Q. Nguyen, Eric Sullivan, Terry J. Koltermann, Aaron J. Dick, Scott S. Shu
  • Patent number: 7914006
    Abstract: A subterranean drill tool has a seal gland formed between a rotating and a static surface. An annular elastomeric seal is located in the gland in engagement with each of the surfaces. A property gradient is formed in at least part of the elastomeric material. The property gradient defines a property that changes from a first level at the surface to a second level in the interior of the seal. The elastomeric material within the property gradient has the same chemical composition as the rest of the seal.
    Type: Grant
    Filed: July 8, 2005
    Date of Patent: March 29, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Redd H. Smith, Terry J. Koltermann
  • Publication number: 20110061940
    Abstract: A rock drilling bit having PDC radial bearings has journal and cone bearing surfaces with increased contact area to increase load support. The radius of curvature of the bearing pin journal and cone bearing surfaces are matched or conformed on the bearing pressure side. The conformal journal surfaces may be formed on the main journal bearing, the pilot pin radial bearing, or both surfaces. In addition, diamond inlays may be located on the bearing surfaces of the cone, the bearing pin, or both components.
    Type: Application
    Filed: November 17, 2010
    Publication date: March 17, 2011
    Applicants: Baker Hughes Incorporated, US Synthetic Corporation
    Inventors: Aaron J. Dick, Chih Lin, Terry J. Koltermann, Anton F. Zahradnik, Dan E. Scott, Don Q. Nguyen, Eric Sullivan, Scott Shiqiang Shu, Craig Hodges Cooley, Timothy Nathan Sexton
  • Publication number: 20110024199
    Abstract: An elastomeric seal ring is located between each bearing pin and each cone of an earth-boring bit. An auxiliary ring or band is imbedded within an annular recess formed in the inner diameter of the seal ring. A portion of the inner diameter of the seal ring as well as the auxiliary ring are in dynamic contact with the bearing pin. The auxiliary ring has a geometric feature that enhances radial flexibility but prevents it from sealing. The geometric feature may be a transverse cut, notches in either the inner or outer diameters, or holes extending between the sides of the auxiliary ring. The auxiliary ring has lubricating properties.
    Type: Application
    Filed: August 3, 2009
    Publication date: February 3, 2011
    Applicant: Baker Hughes Incorporated
    Inventors: Anton Zahradnik, Gregory L. Ricks, Gregory W. Peterson, Don Quy Nguyen, Chih C. Lin, Terry J. Koltermann
  • Publication number: 20110024198
    Abstract: Downhole tool bearings are provided with diamond enhanced materials. The diamond enhanced materials comprise diamond grains in a matrix of tungsten or silicon carbide or a silicon bonded diamond material. A brazed diamond grit or diamond particles coated with a reactive braze may be utilized for bearing applications. Bearing rings for use in downhole tools may be formed at least in part with the diamond enhanced material. In one embodiment, the bearing rings may be used in a positive displacement motor. In additional embodiments, the bearing rings may be used in a submersible pump.
    Type: Application
    Filed: October 11, 2010
    Publication date: February 3, 2011
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Aaron J. Dick, David A. Curry, Terry J. Koltermann, Chih Lin, Danny E. Scott, Anton F. Zahradnik
  • Publication number: 20100147595
    Abstract: A high aspect ratio seal is provided for large roller cone drill bit having a diameter of greater than about 12ΒΌ inches wherein the contact width is narrowed, relative to the width of the seal, to provide a desired contact width.
    Type: Application
    Filed: December 12, 2008
    Publication date: June 17, 2010
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Anton F. Zahradnik, Don Q. Nguyen, Ron D. McCornick, Terry J. Koltermann, Michael J. Veasey, Aaron J. Dick
  • Patent number: 7708090
    Abstract: An elastomeric seal ring is located between each bearing pin and each cone of an earth-boring bit. An excluder ring or band is imbedded within the inner diameter of the seal ring. A portion of the inner diameter of the seal ring as well as the excluder ring are in dynamic sealing contact with the bearing pin. The excluder ring may be harder and more wear resistant than the seal ring. The excluder ring may have lubricating properties. An outer excluder ring may be located on the outer diameter of the seal ring for engaging the cone to resist rotation.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: May 4, 2010
    Assignee: Baker Hughes Incorporated
    Inventors: Anton Zahradnik, Gregory L. Ricks, Gregory W. Peterson, Don Quy Nguyen, Chih C. Lin, Terry J. Koltermann
  • Publication number: 20100071960
    Abstract: A composite seal gland insert for a roller cone rock bit is a polymer composite sleeve containing one or more constituents that function to significantly lower the wear of the elastomeric seal ring. A fluid lubricant film also may be used between the elastomer seal and the gland. The outer surface of the insert is profiled to provide a sealing surface against which the elastomer seal runs. The insert is installed over the bearing pin and has a surface that engages the last machined surface of the leg. A static seal, which may comprise an additional elastomeric seal, may be used beneath the gland insert to provide a pressure seal between the insert and the pin. An adhesive also may be used as the pressure seal and also to retain the gland insert in the desired position. In addition, a mechanical anti-rotation device may be used to prevent rotation of the gland insert.
    Type: Application
    Filed: September 24, 2009
    Publication date: March 25, 2010
    Applicant: Baker Hughes Incorporated
    Inventors: David A. Curry, Terry J. Koltermann, Chih C. Lin, Stuart Hall
  • Publication number: 20100071959
    Abstract: An apparatus and method for retaining a roller cone on a bearing pin of a drillbit body.
    Type: Application
    Filed: September 25, 2008
    Publication date: March 25, 2010
    Applicant: BAKER HUGHES INC.
    Inventors: Anton F. Zahradnik, Don Q. Nguyen, Eric Sullivan, Terry J. Koltermann, Aaron J. Dick, Scott S. Shu
  • Publication number: 20090321146
    Abstract: A roller cone bit is provided that includes a wear resistant diamond-like carbon coating applied to a bearing shaft, where it is in sliding contact with the bearing seal. The wear resistant diamond-like carbon coating reduces wear and corrosion of the head bearing shaft sealing surface and provides extended life to the bearing seal.
    Type: Application
    Filed: September 9, 2009
    Publication date: December 31, 2009
    Applicant: Baker Hughes Incorporated
    Inventors: Aaron J. Dick, Chih C. Lin, Anton F. Zahradnik, Gregory L. Ricks, Terry J. Koltermann