Patents Assigned to SANDVIK MINING AND CONSTRUCTION
  • Air filtration for rock drilling
    Patent number: 8978785
    Abstract: A downhole tool to separate liquid from a drilling fluid includes a multi-vein cyclonic separator disposed within a housing, the cyclonic separator including at least two veins extending in a spiral along the length of the cyclonic separator, holes in the housing positioned adjacent to edges of veins of the cyclonic separator to allow liquid accelerated from the drilling fluid to exit the housing, and wherein the cyclonic separator is configured to provide high centrifugal forces to the drilling fluid downhole.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: March 17, 2015
    Assignee: Sandvik Mining and Construction
    Inventor: Vincent Wayne Shotton
  • AIR CIRCULATION PORTS IN ROTARY ROCK BIT JOURNAL BEARING
    Publication number: 20100284636
    Abstract: A thrust bearing system for a roller cone rock bit includes at least one roller cone disposed on a leg having an air channel therethrough, the thrust bearing system including a primary thrust bearing surface on the leg configured to contact a corresponding primary bearing surface on the roller cone, wherein the primary thrust bearing surface on the leg includes at least one air circulation port in fluid communication with the air channel.
    Type: Application
    Filed: May 6, 2009
    Publication date: November 11, 2010
    Applicant: Sandvik Mining and Construction
    Inventors: Mahavir Nagaraj, Jeremy Marcus, Vincent Wayne Shotton, Sameer Bhoite
  • AIR FILTRATION FOR ROCK DRILLING
    Publication number: 20090173545
    Abstract: A downhole tool to separate liquid from a drilling fluid includes a multi-vein cyclonic separator disposed within a housing, the cyclonic separator including at least two veins extending in a spiral along the length of the cyclonic separator, holes in the housing positioned adjacent to edges of veins of the cyclonic separator to allow liquid accelerated from the drilling fluid to exit the housing, and wherein the cyclonic separator is configured to provide high centrifugal forces to the drilling fluid downhole.
    Type: Application
    Filed: January 9, 2009
    Publication date: July 9, 2009
    Applicant: Sandvik Mining and Construction
    Inventor: Vincent Wayne Shotton
  • MINING CLAW BIT
    Publication number: 20090057030
    Abstract: A mining bit includes a bit body having a central axis, the bit body having a forward portion with faceted surfaces and a rearward attachment portion. The mining bit further includes a plurality of wings extending from the faceted surfaces of the bit body and arranged about a central hub. A plurality of cutting elements are disposed on distal ends of the wings.
    Type: Application
    Filed: August 18, 2008
    Publication date: March 5, 2009
    Applicant: SANDVIK MINING AND CONSTRUCTION
    Inventors: Roger Didericksen, S. Ravi Teja, Irrinki Rangayya Naidu