Patents by Inventor Kevin Angus

Kevin Angus 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 for hardfacing roller cone drill bit legs
    Patent number: 7100712
    Abstract: A roller cone drill bit includes a bit body adapted to be coupled to a drill string, at ne leg depending from the bit body, and a bearing journal on the at least one leg, wherein least one leg defines a shirttail portion at an end thereof. A method of manufacturing the cone drill bit includes assembling a roller cone onto the bearing journal on the at least one asking around the shirttail portion, and performing a spray cycle. The spray cycle includes ng the shirttail portion with hardfacing using a high pressure/high velocity oxygen fuel after the roller cone is assembled onto the bearing journal.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: September 5, 2006
    Assignee: Smith International, Inc.
    Inventors: John Ramsay Crowe, Angus Greig, Robert Hamilton, Gary Farquhar, Kevin Angus
  • Method for hardfacing roller cone drill bit legs
    Publication number: 20060027402
    Abstract: A roller cone drill bit includes a bit body adapted to be coupled to a drill string, at ne leg depending from the bit body, and a bearing journal on the at least one leg, wherein least one leg defines a shirttail portion at an end thereof. A method of manufacturing the cone drill bit includes assembling a roller cone onto the bearing journal on the at least one asking around the shirttail portion, and performing a spray cycle. The spray cycle includes ng the shirttail portion with hardfacing using a high pressure/high velocity oxygen fuel after the roller cone is assembled onto the bearing journal.
    Type: Application
    Filed: September 30, 2005
    Publication date: February 9, 2006
    Applicant: Smith International, Inc.
    Inventors: John Crowe, Angus Greig, Robert Hamilton, Gary Farquhar, Kevin Angus
  • Roller cone drill bit legs
    Patent number: 6955233
    Abstract: A method is disclosed for applying hardfacing to a shirttail portion of a roller cone drill bit, including masking around the shirttail portion of the bit and operating a high pressure/high velocity oxygen fuel torch to apply the hardfacing to the shirttail portion.
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: October 18, 2005
    Assignee: Smith International, Inc.
    Inventors: John Ramsay Crowe, Angus Greig, Robert Hamilton, Gary Farquhar, Kevin Angus
  • Method for hardfacing roller cone drill bit legs
    Patent number: 6874388
    Abstract: A method is disclosed for applying hardfacing to a shirttail portion of a roller cone drill bit, including masking around the shirttail portion of the bit and operating a high pressure/high velocity oxygen fuel torch to apply the hardfacing to the shirttail portion.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: April 5, 2005
    Assignee: Smith International, Inc.
    Inventors: John Ramsay Crowe, Angus Greig, Robert Hamilton, Gary Farquhar, Kevin Angus
  • Roller cone drill bit legs
    Publication number: 20040159470
    Abstract: A method is disclosed for applying hardfacing to a shirttail portion of a roller cone drill bit, including masking around the shirttail portion of the bit and operating a high pressure/high velocity oxygen fuel torch to apply the hardfacing to the shirttail portion.
    Type: Application
    Filed: February 12, 2004
    Publication date: August 19, 2004
    Inventors: John Ramsay Crowe, Angus Greig, Robert Hamilton, Gary Farquhar, Kevin Angus
  • Method for hardfacing roller cone drill bit legs
    Publication number: 20020157873
    Abstract: A method is disclosed for applying hardfacing to a shirttail portion of a roller cone drill bit, including masking around the shirttail portion of the bit and operating a high pressure/high velocity oxygen fuel torch to apply the hardfacing to the shirttail portion.
    Type: Application
    Filed: April 3, 2002
    Publication date: October 31, 2002
    Inventors: John Ramsay Crowe, Angus Greig, Robert Hamilton, Gary Farquhar, Kevin Angus