Patents by Inventor Zoltan Berger

Zoltan Berger 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).

  • Apparatus for shredding documents
    Patent number: 4558827
    Abstract: A document shredder having a rotary cutter with axially extending rows of teeth, each row having alternating teeth of different heights. The heights of the teeth are selected such that the difference in the heights of the teeth is greater than the height of the smaller teeth. This relationship ensures breaking up of the document into small shreds and allows the cutter to be driven at low speeds, thereby reducing the power requirements and the noise level.
    Type: Grant
    Filed: March 28, 1983
    Date of Patent: December 17, 1985
    Assignee: Borbe-Wanner AG.
    Inventor: Zoltan Berger