Patents by Inventor Gerhard Zapf

Gerhard Zapf 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).

  • DOCUMENT SHREDDER
    Publication number: 20120248230
    Abstract: A document shredder has a housing wall interrupted by an insertion opening of a feed channel for the material to be comminuted. A cutting unit adjoins the feed channel in the insertion direction of the material to be comminuted. A suction-extraction device has an intake end opening into the feed channel and intended for sucking the air stream out of the feed channel. A filter element in the blow-out opening filters out fine dust particles before the suction-extracted air is blown out of the document shredder housing into the surroundings.
    Type: Application
    Filed: May 24, 2012
    Publication date: October 4, 2012
    Applicant: DAHLE BUEROTECHNIK GMBH
    Inventors: GERHARD ZAPF, DIETER PÖSCHL, THOMAS SCHOLZ
  • Process for making metallic, molded composite bodies
    Patent number: 4032335
    Abstract: A process for producing composite bodies consisting of discrete particles, embedded in a metallic embedding material, in which the particles are positioned relative to the embedding material and the resulting composite is subjected to isostatic compression at pressures which suffice to cause the particles to be embedded.
    Type: Grant
    Filed: November 21, 1975
    Date of Patent: June 28, 1977
    Assignee: Sintermetallwerk Krebsoege GmbH
    Inventors: Gerhard Zapf, Lothar Albano-Muller, Horst Kiethe, Rainer Rohlig