Patents by Inventor Walter-Helmut Heitz

Walter-Helmut Heitz 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).

  • Device for slitting and curling ornamental packaging ribbons
    Patent number: 5072515
    Abstract: A device for slitting and curling ornamental packaging ribbons is formed with a cutting punch which is elastically and movably connected with a counterplate. On the side of the cutting punch facing the counterplate, the cutting punch has a plurality of cutting elements embodied in the form of plastic blades extending in the direction of the relative motion between the device and the ornamental packaging ribbon. The counterplate is formed as a matrix with holes corresponding with the plastic blades into which the latter are inserted.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: December 17, 1991
    Inventor: Walter-Helmut Heitz
  • Bird feeder
    Patent number: D423731
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: April 25, 2000
    Inventor: Walter-Helmut Heitz