Patents by Inventor David A. Conroy

David A. Conroy 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).

  • Method of forming impregnated diamond cutting structures
    Patent number: 7845059
    Abstract: An insert for a drill bit that includes diamond particles disposed in a matrix material, wherein the diamond particles have a contiguity of 15% or less is disclosed. A method of forming a diamond-impregnated cutting structure, that includes loading a plurality of substantially uniformly coated diamond particles into a mold cavity, pre-compacting the substantially uniformly coated diamond particles using a cold-press cycle, and heating the compacted, substantially uniformly coated diamond particles with a matrix material to form the diamond impregnated cutting structure is also disclosed.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: December 7, 2010
    Assignee: Smith International, Inc.
    Inventors: Gregory T. Lockwood, Thomas W. Oldham, Anthony Griffo, Madapusi K. Keshavan, David A. Conroy
  • Impregnated diamond cutting structures
    Patent number: 7350599
    Abstract: An insert for a drill bit that includes diamond particles disposed in a matrix material, wherein the diamond particles have a contiguity of 15% or less is disclosed. A method of forming a diamond-impregnated cutting structure, that includes loading a plurality of substantially uniformly coated diamond particles into a mold cavity, pre-compacting the substantially uniformly coated diamond particles using a cold-press cycle, and heating the compacted, substantially uniformly coated diamond particles with a matrix material to form the diamond impregnated cutting structure is also disclosed.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: April 1, 2008
    Assignee: Smith International, Inc.
    Inventors: Greg Lockwood, Thomas W. Oldham, Anthony Griffo, Madapusi K. Keshavan, David A. Conroy