Patents Assigned to SANDVIK MINING AND CONSTRUCTIN TOOLS AB
  • Patent number: 12054991
    Abstract: A drill bit includes a shank and drill bit head, which are both centered on a longitudinal axis, a gauge, and a front face with a peripheral edge adjacent to the gauge. An area within the peripheral edge defines a total area of the front face. The front face includes a central island at its radially innermost section, a plurality of peripheral platforms at its radially outermost section adjacent to the peripheral edge, and a recessed section positioned radially between the central island and the peripheral platforms. The central island and the peripheral platforms are axially raised compared to the recessed section. A plurality of inner front inserts are positioned on the central island and at least one outer front insert is positioned on each of the peripheral platforms. The area of the recessed section is >62% of the area of the total area of the front face.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: August 6, 2024
    Assignee: SANDVIK MINING AND CONSTRUCTIN TOOLS AB
    Inventor: John Hammargren