Patents by Inventor Randon S. Cannon

Randon S. Cannon 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).

  • Polycrystalline diamond insert, drill bit including same, and method of operation
    Patent number: 7874383
    Abstract: Polycrystalline diamond inserts are disclosed. For example, a polycrystalline diamond insert may comprise a polycrystalline diamond layer affixed to a substrate at an interface. In addition the polycrystalline diamond layer may comprise: an arcuate exterior surface, a first region including a catalyst and a second region from which the catalyst is at least partially removed. Further, the arcuate exterior surface may be defined by a portion of the first region including the catalyst and a portion of the second region from which the catalyst is at least partially removed. In another embodiment, the polycrystalline diamond layer may include a convex exterior surface for contacting a subterranean formation, wherein at least a portion of a catalyst used for forming the polycrystalline diamond layer is removed from a region of the polycrystalline diamond layer. Subterranean drilling tools (e.g., percussive drill bits) including at least one polycrystalline diamond insert are disclosed.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: January 25, 2011
    Assignee: US Synthetic Corporation
    Inventors: Randon S. Cannon, Greg C. Topham, Eric C. Pope
  • Polycrystalline diamond insert, drill bit including same, and method of operation
    Patent number: 7681669
    Abstract: Polycrystalline diamond inserts are disclosed. For example, a polycrystalline diamond insert may comprise a polycrystalline diamond layer affixed to a substrate at an interface. In addition the polycrystalline diamond layer may comprise: an arcuate exterior surface, a first region including a catalyst and a second region from which the catalyst is at least partially removed. Further, the arcuate exterior surface may be defined by a portion of the first region including the catalyst and a portion of the second region from which the catalyst is at least partially removed. In another embodiment, the polycrystalline diamond layer may include a convex exterior surface for contacting a subterranean formation, wherein at least a portion of a catalyst used for forming the polycrystalline diamond layer is removed from a region of the polycrystalline diamond layer. Subterranean drilling tools (e.g., percussive drill bits) including at least one polycrystalline diamond insert are disclosed.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: March 23, 2010
    Assignee: US Synthetic Corporation
    Inventors: Randon S. Cannon, Greg C. Topham, Eric C. Pope