Patents by Inventor Kevin W. Schader

Kevin W. Schader 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).

  • Inclined leg earth-boring bit
    Patent number: 6227314
    Abstract: An earth-boring bit has a body with a threaded pin on the upper end for connecting to a drill string. Bit legs are formed symmetrically on the exterior of the body and extend downward. The lower portion of each bit leg is inclined and offset circumferentially from the upper portion. A cutter is mounted to the lower portion of each bit leg for rotation about a cutter axis. Nozzle bosses are located between each bit leg. A flow channel exists on both sides of each nozzle boss. The nozzle boss is inclined in a similar direction to the bit leg.
    Type: Grant
    Filed: April 29, 1999
    Date of Patent: May 8, 2001
    Assignee: Baker Hughes, Inc.
    Inventors: Glenn R. Zadrapa, Gregory L. Ricks, Kenneth C. Brannon, Robert E. Grimes, Kevin W. Schader
  • Hardfacing composition for earth-boring bits
    Patent number: 5663512
    Abstract: A hardfacing composition comprises at least 60% by weight of hard metal granules including a quantity of sintered carbide pellets and a quantity of cast carbide pellets. The cast and sintered carbides are selected from the group of carbides consisting of chromium, molybdenum, niobium, tantalum, titanium, tungsten, and vanadium carbides and alloys and mixtures thereof. The balance of the hardfacing composition is matrix metal with traces of flux or deoxidizer, and alloying elements. All percentages given are pre-application ratios.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: September 2, 1997
    Assignee: Baker Hughes Inc.
    Inventors: Kevin W. Schader, Ronald L. Jones, James L. Overstreet, Danny E. Scott, Mou-Chih Lu, Alan J. Massey
  • Hardfacing composition for earth-boring bits
    Patent number: RE37127
    Abstract: A hardfacing composition comprises at least 60% by weight of hard metal granules including a quantity of sintered carbide pellets and a quantity of cast carbide pellets. The cast and sintered carbides are selected from the group of carbides consisting of chromium, molybdenum, niobium, tantalum, titanium, tungsten, and vanadium carbides and alloys and mixtures thereof. The balance of the hardfacing composition is matrix metal with traces of flux or deoxidizer, and alloying elements. All percentages given are pre-application ratios.
    Type: Grant
    Filed: August 19, 1998
    Date of Patent: April 10, 2001
    Assignee: Baker Hughes Incorporated
    Inventors: Kevin W. Schader, James L. Overstreet, Alan J. Massey, Ronald L. Jones, Danny E. Scott