Patents by Inventor S. Craig Russell

S. Craig Russell 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).

  • Formation-engaging structures having retention features, earth-boring tools including such structures, and related methods
    Patent number: 9359826
    Abstract: An earth-boring tool includes a formation-engaging structure with a formation-engaging surface at a distal end and a side surface between a proximal end and the distal end along a central axis of the formation-engaging structure. A generally linear recess may be formed in the side surface along an axis oriented at a non-parallel angle relative to the central axis of the formation-engaging structure. A generally helical recess may be formed in the side surface, and the generally helical recess may intersect the generally linear recess. Earth-boring tools may include such formation-engaging structures. Methods may be used to form such formation-engaging structures.
    Type: Grant
    Filed: May 7, 2014
    Date of Patent: June 7, 2016
    Assignee: Baker Hughes Incorporated
    Inventors: Do Van Do, Juan Miguel Bilen, S. Craig Russell, Kenneth R. Evans, Jason E. Hoines, Oliver Matthews, R. Keith Glasgow, Chaitanya K. Vempati
  • FORMATION-ENGAGING STRUCTURES HAVING RETENTION AND REMOVAL FEATURES, EARTH-BORING TOOLS INCLUDING SUCH STRUCTURES, AND RELATED METHODS
    Publication number: 20150322727
    Abstract: An earth-boring tool includes a formation-engaging structure with a formation-engaging surface at a distal end and a side surface between a proximal end and the distal end along a central axis of the formation-engaging structure. A generally linear recess may be formed in the side surface along an axis oriented at a non-parallel angle relative to the central axis of the formation-engaging structure. A generally helical recess may be formed in the side surface, and the generally helical recess may intersect the generally linear recess. Earth-boring tools may include such formation-engaging structures. Methods may be used to form such formation-engaging structures.
    Type: Application
    Filed: May 7, 2014
    Publication date: November 12, 2015
    Inventors: Do Van Do, Juan Miguel Bilen, S. Craig Russell, Kenneth R. Evans, Jason E. Hoines, Oliver Matthews, R. Keith Glasgow, Chaitanya K. Vempati