Patents by Inventor Karl H. Plester

Karl H. Plester 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).

  • Fixing bridge
    Patent number: 4465407
    Abstract: A fixing bridge for attachment to the goaf side of a channel section on a scraper-chain conveyor, is provided with connectors for the attachment of anchoring devices. A first connector is provided adjacent to one end of the fixing bridge, and a second connector is provided adjacent to the other end of the fixing bridge. The second connector is vertically off-set with respect to the first connector.
    Type: Grant
    Filed: July 23, 1982
    Date of Patent: August 14, 1984
    Assignee: Gewerkschaft Eisenhutte Westfalia
    Inventors: Karl H. Plester, Friedrich Eggenstein, Gunter Terhorst