Patents Assigned to Reed Tool Company (Delaware)
  • Intermittent high-drag oil well drilling bit
    Patent number: 4446935
    Abstract: Methods and apparatus are disclosed for the rapid and efficient drilling of oil well and other types of bore holes through tough abrasive underground formations, which methods and apparatus utilize high drag intermittent contact and cooling techniques to provide good rates of penetration with low wear and heat deterioration on the drilling tools.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: May 8, 1984
    Assignee: Reed Tool Company (Delaware)
    Inventor: Percy W. Schumacher, Jr.