Patents by Inventor Karl-Josef Dufhaus

Karl-Josef Dufhaus 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: 7325674
    Abstract: A plate conveyor having overlapping plates and a plate-supporting sprocket chain composed of two parallel chain strands formed of inner link members and outer link members, facing ones of which are connected by link pins. The chain is in the form of at least two preassembled portions that are to be interconnected by terminal link segments. A first terminal link segment is comprised of two parallel, outwardly projecting terminal inner link members, with a plate connected to at least one of them. A second terminal link segment is formed by a terminal outer link member, one end of which is connected to a link pin. The terminal outer link member projects outwardly on one side of the second terminal link segment and is connected to a plate. An outer closure link member is disposed across from the terminal outer link member and has an end adapted to be placed on the link pin.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: February 5, 2008
    Assignee: Aumund-Fördererbau GmbH & Co. KG
    Inventor: Karl-Josef Dufhaus
  • Publication number: 20070218767
    Abstract: A plate conveyor having overlapping plates and a plate-supporting sprocket chain composed of two parallel chain strands formed of inner link members and outer link members, facing ones of which are connected by link pins. The chain is in the form of at least two preassembled portions that are to be interconnected by terminal link segments. A first terminal link segment is comprised of two parallel, outwardly projecting terminal inner link members, with a plate connected to at least one of them. A second terminal link segment is formed by a terminal outer link member, one end of which is connected to a link pin. The terminal outer link member projects outwardly on one side of the second terminal link segment and is connected to a plate. An outer closure link member is disposed across from the terminal outer link member and has an end adapted to be placed on the link pin.
    Type: Application
    Filed: March 22, 2005
    Publication date: September 20, 2007
    Inventor: Karl-Josef Dufhaus