Patents by Inventor Roy Dee Estes

Roy Dee Estes 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).

  • Sharp gage for mill tooth rock bits
    Patent number: 6435287
    Abstract: A design for a gage tooth of the milled tooth variety is provided. The gage facing surface of each tooth is shaped so that only a narrow surface of each tooth contacts the borehole wall. Adjacent areas on each tooth slope away from the wall. The narrow gage facing surfaces, the sloping areas, and other areas are all covered with a suitable hard metal facing material.
    Type: Grant
    Filed: February 1, 2001
    Date of Patent: August 20, 2002
    Assignee: Rock Bit International, Inc.
    Inventor: Roy Dee Estes
  • Sharp gage for mill tooth rock bits
    Publication number: 20010004945
    Abstract: A design for a gage tooth of the milled tooth variety is provided. The gage facing surface of each tooth is shaped so that only a narrow surface of each tooth contacts the borehole wall. Adjacent areas on each tooth slope away from the wall. The narrow gage facing surfaces, the sloping areas, and other areas are all covered with a suitable hard metal facing material.
    Type: Application
    Filed: February 1, 2001
    Publication date: June 28, 2001
    Inventor: Roy Dee Estes
  • One cone rotary drill bit featuring enhanced grooves
    Patent number: 6167975
    Abstract: A one cone drill bit is equipped with multiple jet flow guiding grooves along the cone. The multiple grooves connects to a circular groove axially centered on the nose end portion of the cone. The circular groove sweep the cuttings and mud flow across the drilled face and up the well borehole.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: January 2, 2001
    Assignee: Rock Bit International, Inc.
    Inventor: Roy Dee Estes