Patents by Inventor David C. Machacek

David C. Machacek 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: 6497537
    Abstract: A slotting cutter including a support disc rotatable in a predetermined direction on a central axis. The support disc is of a generally cylindrical shape having a first side and a second side, and an outer periphery. A plurality of pockets including a cartridge assembly are staggered about the outer periphery of the support disc and include a cutting insert secured to each cartridge assembly. Each cutting insert includes at least one cutting edge. The cutting insert extends laterally outwardly beyond the first side of the support disc and is spaced from the second side of the support disc such that the cutting edge of adjacent inserts are positioned to laterally overlap thereby providing an increased effective cutting path width.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: December 24, 2002
    Assignee: Kennametal PC Inc.
    Inventors: Mark A. Francis, Kay E. Kucharik, David C. Machacek, Donald P. Morris
  • Patent number: 6431799
    Abstract: A slotting cutter including a support disc rotatable in a predetermined direction on a central axis. The support disc is of a generally cylindrical shape having a first side and a second side, and an outer periphery. A plurality of pockets are staggered about the outer periphery of the support disc and includes a cutting insert secured in each pocket. Each cutting insert includes at least one cutting edge. The cutting insert extends laterally outwardly beyond the first side of the support disc and is spaced from the second side of the support disc such that the cutting edge of adjacent inserts are positioned to laterally overlap thereby providing an increased effective cutting path width.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: August 13, 2002
    Assignee: Kennametal PC Inc.
    Inventors: Mark A. Francis, Howard W. Frye, Kay E. Kucharik, David C. Machacek, Donald P. Morris