Patents Assigned to New Railhead Manufacturing, L.L.C.
  • Drill bit shear relief for horizontal directional drilling of rock formations
    Patent number: 6209660
    Abstract: A drill bit for directional boring of all earth formations such as dirt, sand, rock and/or any type combination of formations, utilizing a bit body containing fixed and semi-floating cutting points and one or more fluid channels for the purpose of lubricating and dispersing cut and/or fractured formations.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: April 3, 2001
    Assignee: New Railhead Manufacturing, L.L.C.
    Inventor: David M. Cox