Patents by Inventor Don F. Von Schriltz

Don F. Von Schriltz 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: 4289055
    Abstract: An improved rotatable anvil is provided. The anvil is of the type useful to cooperate with a rotatable die cylinder in manufacturing paper blanks and the like. The anvil comprises compressible first (inner), hard second (intermediate) and hard third (outer) concentrically disposed and axially extending layers interbonded upon a core thereof. The second and third layers are of different hardnesses. The anvil is made by providing a hollow cylindrical shell, mounting the shell concentrically about the core, injecting a polymerizable fluid between the shell and core assemblage and holding the mounted assemblage for a time sufficient for substantially complete polymerization.
    Type: Grant
    Filed: January 7, 1980
    Date of Patent: September 15, 1981
    Inventor: Don F. Von Schriltz