Patents by Inventor Lon J. Wardell

Lon J. Wardell 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).

  • Patent number: 6439811
    Abstract: An improved rotary cutting tool overcomes the disadvantages and limitations of known constructions through the use of least one primary flute defining a low-angle cutting surface, and at least one secondary flute defining a high-angle cutting surface. The primary and secondary flutes intersect to form a compound cutting surface having a continuous cutting edge including a leading cutting edge formed along at least a portion of the low-angle cutting surface, and a trailing cutting edge formed along at least a portion of the high-angle cutting surface. The invention may further include a cooling channel and at least one aperture exiting out of the main body portion to provide a cooling fluid to one of more of the cutting edges. In a different embodiment, the leading cutting edge begins from a leading point and the trailing edge terminates in a trailing point, and one or both of the leading and trailing points are eased to reduce scoring.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: August 27, 2002
    Inventor: Lon J. Wardell
  • Patent number: 6179528
    Abstract: An end-mill tool has at least one low helix angle flute, or primary flute) and at least two low helix angle flutes, or secondary flutes. The primary and secondary flutes intersect to define a plurality of compound helical cutting surfaces. Each of the compound cutting surfaces includes a cutting edge having a leading portion formed adjacent one of the primary flutes and a trailing portion formed adjacent one of the secondary flutes.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: January 30, 2001
    Inventor: Lon J. Wardell
  • Patent number: 6168355
    Abstract: The present invention provides an end-mill tool which includes a shank, a point, and a main body portion located intermediate the shank and the point. A first flute is formed on the main body portion along a first helix. A second flute is formed on the main body portion along a second helix. The first and second flutes preferably extend helically along the body of the tool. Two distinct helical cutting surfaces are defined by the first flute and the second flute. The point of the tool includes two additional cutting edges formed by ears extending outward from the point of the tool adjacent the first flute and the second flute.
    Type: Grant
    Filed: May 11, 1999
    Date of Patent: January 2, 2001
    Inventor: Lon J. Wardell
  • Patent number: 6007276
    Abstract: An end-mill tool has at least one low helix angle flute, or primary flute) and at least two low helix angle flutes, or secondary flutes. The primary and secondary flutes intersect to define a plurality of compound helical cutting surfaces. Each of the compound cutting surfaces includes a cutting edge having a leading portion formed adjacent one of the primary flutes and a trailing portion formed adjacent one of the secondary flutes.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: December 28, 1999
    Inventor: Lon J. Wardell