Patents by Inventor Jeffery Edward Daly

Jeffery Edward Daly 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).

  • Rolling cutter drill bits
    Patent number: 6354740
    Abstract: A rolling cutter drill bit comprises a body and three legs, each leg having a cantilevered bearing spindle, a rolling cutter rotatably mounted on the bearing spindle, lubricant delivering means within the bearing spindle, and a floating thrust bearing element configured to carry onward thrust loads from the rolling cutter onto the bearing spindle. Each floating thrust bearing element is formed of a wrought alloy material consisting primarily of chromium carbide and cobalt and having a yield strength of less than 120,000 psi and a ductility of at least 4%, both at room temperature.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: March 12, 2002
    Assignee: Camco International Inc.
    Inventors: Ranjit Kumar Singh, Michael Scott Nixon, Jeffery Edward Daly
  • Rolling cutter drill bits
    Patent number: 5725313
    Abstract: A rolling cutter drill bit comprises a body and three legs, each leg having a cantilevered bearing spindle, a rolling cutter rotatably mounted on the bearing spindle, lubricant delivering means within the beating spindle, and a floating thrust bearing element configured to carry onward thrust loads from the rolling cutter onto the bearing spindle. Each floating thrust bearing element is formed of a wrought alloy material consisting primarily of chromium carbide and cobalt and having a yield strength of less than 120,000 psi and a ductility of at least 4%, both at room temperature.
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: March 10, 1998
    Assignee: Camco International Inc.
    Inventors: Ranjit Kumar Singh, Michael Scott Nixon, Jeffery Edward Daly