Patents by Inventor Terry J. Kolterman

Terry J. Kolterman 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).

  • Conformal bearing for rock drill bit
    Patent number: 7861805
    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: May 15, 2008
    Date of Patent: January 4, 2011
    Assignees: Baker Hughes Incorporated, US Synthetic Corporation
    Inventors: Aaron J. Dick, Chih Lin, Terry J. Kolterman, Anton F. Zahradnik, Dan E. Scott, Don Q. Nguyen, Eric Sullivan, Scott Shiqiang Shu, Craig Hodges Cooley, Timothy Nathan Sexton
  • CONFORMAL BEARING FOR ROCK DRILL BIT
    Publication number: 20090283332
    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: May 15, 2008
    Publication date: November 19, 2009
    Applicants: BAKER HUGHES INCORPORATED, US SYNTHETIC CORPORATION
    Inventors: Aaron J. Dick, Chih Lin, Terry J. Kolterman, Anton F. Zahradnik, Dan E. Scott, Don Q. Nguyen, Eric Sullivan, Scott Shiqiang Shu, Craig Hodges Cooley, Timothy Nathan Sexton
  • Surface modifications for rotary drill bits
    Patent number: 6450271
    Abstract: A rotary-type drill bit for drilling subterranean formations having areas or components having surfaces exhibiting a relatively low adhesion, preferably nonwater-wettable, surface over at least a portion thereof.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: September 17, 2002
    Assignee: Baker Hughes Incorporated
    Inventors: Gordon A. Tibbitts, Danny E. Scott, James L. Overstreet, Terry J. Kolterman, Chih Lin, James Andy Oxford, Steven R. Radford