Patents by Inventor Robert Hermanus van Ligten

Robert Hermanus van Ligten 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: 6491999
    Abstract: The invention relates to a covering part with cable channels and a cabled covering part such as a carpet for vehicles, which is provided with several self-closing channels acommodating a cable network. These channels can be formed directly into the spring-elastic part of the covering or can comprise a plastic or foam rubber sleeve slotted on their longitudinal side and lying in the covering part. The inexpensive and simple to manufacture covering part permits an exact leading of the cables, a good protection for the cable network and a simple and quick application and exchange of the cables. The invention further relates to a method for manufacturing such a covering part.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: December 10, 2002
    Assignees: Rieter Automotive (International) AG, Delphi Automotive Systems Deutschland GmbH
    Inventors: Christopher Cawthra, Wolfgang Diegmann, Peter Ehrler, Norbert Hinz, Joseph J. Laux, Robert Hermanus van Ligten
  • Patent number: 5820146
    Abstract: A hand cart which can be used for transporting both persons and luggage. The hand cart is easily manipulated, is flexible and can be handily folded, so that the hand cart is suitable for transporting goods in narrow passages. The hand cart has a support and draw bar that can be swivelled with respect to a stepboard, so that in a folded-up position, the hand cart at least partially forms a plane parallel to the stepboard. A luggage-carrying surface of the hand cart is available when the hand cart is in a partially folded position, and the hand cart can be driven on only two front wheels when in such partially folded position.
    Type: Grant
    Filed: March 19, 1996
    Date of Patent: October 13, 1998
    Inventor: Robert Hermanus Van Ligten