Patents by Inventor Lee E. Thomas

Lee E. Thomas 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).

  • Cutting insert with improved flank surface roughness and method of making the same
    Patent number: 6161990
    Abstract: A cutting insert having a rake surface and a flank surface wherein there is a cutting edge at the intersection of the rake surface and the flank surface. The rake surface exhibits a sufficient degree of surface roughness so as to provide for microscopic chip control. The flank surface exhibits a sufficiently smooth (i.e., a mirror finish) so as to provide for a workpiece surface finish that approaches (or possibly reaches) the theoretical value attributable for the given cutting conditions.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: December 19, 2000
    Assignee: Kennametal Inc.
    Inventors: Edward J. Oles, Lee E. Thomas