Patents by Inventor Michael Krauel

Michael Krauel 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).

  • Percussion hammer bit with a driver sub including a guide sleeve portion
    Patent number: 8312944
    Abstract: A percussion drilling assembly for boring into the earth. In an embodiment, the assembly comprises a tubular case having a central axis, an upper end, and a lower end. In addition, the assembly comprises a piston slidingly disposed within the tubular case. Further, the assembly comprises a driver sub coaxially coupled to the lower end of the tubular case. The driver sub includes an upper end disposed within the case and a lower end extending axially from the lower end of the case. Still further, the assembly comprises a hammer bit coaxially disposed within the driver sub. The hammer bit including an upper end disposed within the driver sub and a lower end extending from the lower end of the driver sub. The upper end of the driver sub extends axially from the upper end of the hammer bit and is adapted to receive the piston.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: November 20, 2012
    Assignee: Smith International, Inc.
    Inventors: Alan J. Marshall, Shantanu Swadi, Michael Krauel
  • Percussion Hammer Bit With a Driver Sub Including a Guide Sleeve Portion
    Publication number: 20100187016
    Abstract: A percussion drilling assembly for boring into the earth. In an embodiment, the assembly comprises a tubular case having a central axis, an upper end, and a lower end. In addition, the assembly comprises a piston slidingly disposed within the tubular case. Further, the assembly comprises a driver sub coaxially coupled to the lower end of the tubular case. The driver sub includes an upper end disposed within the case and a lower end extending axially from the lower end of the case. Still further, the assembly comprises a hammer bit coaxially disposed within the driver sub. The hammer bit including an upper end disposed within the driver sub and a lower end extending from the lower end of the driver sub. The upper end of the driver sub extends axially from the upper end of the hammer bit and is adapted to receive the piston.
    Type: Application
    Filed: January 28, 2009
    Publication date: July 29, 2010
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Alan J. Marshall, Shantanu Swadi, Michael Krauel