Patents by Inventor John Clunan

John Clunan 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 cone drill bit having high density cutting elements
    Patent number: 9856701
    Abstract: A rolling cone drill bit for drilling in earthen formations. In an embodiment, the drill bit comprises a plurality of rolling cone cutters. Each cone cutter includes a plurality of gage cutting elements, a first plurality of bottomhole cutting elements, and a second plurality of bottomhole cutter elements. Each of the first plurality of bottomhole cutting elements is staggered relative to the gage cutting elements on each cone cutter, and the profiles of the gage cutting elements and the first plurality of bottomhole cutting elements on each cone cutter overlap in rotated profile view. Each of the second plurality of bottomhole cutting elements is staggered relative to the first plurality of bottomhole cutting elements on at least one cone cutter, and the profiles of the first plurality of bottomhole cutting elements and the second plurality of bottomhole cutting elements on at least one cone cutter overlap in rotated profile view.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: January 2, 2018
    Assignee: SMITH INTERNATIONAL, INC.
    Inventors: Gary Ray Portwood, Luca Tedeschi, Giampaolo Ferrari, Joshua Gatell, John Clunan, Allen Dean Chester White
  • ROLLING CONE DRILL BIT HAVING HIGH DENSITY CUTTING ELEMENTS
    Publication number: 20150376951
    Abstract: A rolling cone drill bit for drilling in earthen formations. In an embodiment, the drill bit comprises a plurality of rolling cone cutters. Each cone cutter includes a plurality of gage cutting elements, a first plurality of bottomhole cutting elements, and a second plurality of bottomhole cutter elements. Each of the first plurality of bottomhole cutting elements is staggered relative to the gage cutting elements on each cone cutter, and the profiles of the gage cutting elements and the first plurality of bottomhole cutting elements on each cone cutter overlap in rotated profile view. Each of the second plurality of bottomhole cutting elements is staggered relative to the first plurality of bottomhole cutting elements on at least one cone cutter, and the profiles of the first plurality of bottomhole cutting elements and the second plurality of bottomhole cutting elements on at least one cone cutter overlap in rotated profile view.
    Type: Application
    Filed: June 2, 2015
    Publication date: December 31, 2015
    Inventors: Gary Ray Portwood, Luca Tedeschi, Giampaolo Ferrari, Joshua Gatell, John Clunan, Allen Dean Chester White
  • Rolling cone drill bit having high density cutting elements
    Patent number: 9074431
    Abstract: A rolling cone drill bit for drilling in earthen formations having a plurality of rolling cone cutters. Each cone cutter includes a plurality of gage cutting elements, a first plurality of bottomhole cutting elements, and a second plurality of bottomhole cutter elements. Each of the first plurality of bottomhole cutting elements is staggered relative to the gage cutting elements on each cone cutter. Each of the second plurality of bottomhole cutting elements is staggered relative to the first plurality of bottomhole cutting elements on at least one cone cutter.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: July 7, 2015
    Assignee: Smith International, Inc.
    Inventors: Gary Portwood, Luca Tedeschi, Giampaolo Ferrari, Josh Gatell, John Clunan, Allen D. White
  • Rolling Cone Drill Bit Having High Density Cutting Elements
    Publication number: 20090188724
    Abstract: A rolling cone drill bit for drilling in earthen formations. In an embodiment, the drill bit comprises a plurality of rolling cone cutters. Each cone cutter includes a plurality of gage cutting elements, a first plurality of bottomhole cutting elements, and a second plurality of bottomhole cutter elements. Each of the first plurality of bottomhole cutting elements is staggered relative to the gage cutting elements on each cone cutter, and the profiles of the gage cutting elements and the first plurality of bottomhole cutting elements on each cone cutter overlap in rotated profile view. Each of the second plurality of bottomhole cutting elements is staggered relative to the first plurality of bottomhole cutting elements on at least one cone cutter, and the profiles of the first plurality of bottomhole cutting elements and the second plurality of bottomhole cutting elements on at least one cone cutter overlap in rotated profile view.
    Type: Application
    Filed: January 9, 2009
    Publication date: July 30, 2009
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Gary Portwood, Luca Tedeschi, Giampaolo Ferrari, Josh Gatell, John Clunan, Allen D. White