Patents by Inventor Curt Muhrén

Curt Muhrén 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).

  • Drill bit with three cutting edges
    Patent number: 6698981
    Abstract: A drill has first, second and third teeth each tooth having a cutting edge at its front end. The cutting edge of the first tooth extends all the way to a center axis of the drill; the cutting edges of the second and third teeth have inner ends spaced from the axis to form a space between one another. A cooling channel extends axially through the drill until approaching the front end of the drill whereupon it becomes inclined relative to the axis and forms an exit port in the space.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: March 2, 2004
    Assignee: Seco Tools AB
    Inventors: Tomas Beno, Curt Muhrén