Patents by Inventor Walter Kilchenmann

Walter Kilchenmann 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 manufacturing a foamed article formed or pre-expanded polystyrene
    Patent number: 4083665
    Abstract: An apparatus for the manufacture of a foamed molded article or part from pre-expanded polystyrene comprising a hollow mold compartment which communicates with a vapor chamber or compartment at least at the region of one of its walls by means of passageways or openings provided therein. Each passageway or opening is controlled by a valve arrangement responsive to the vapor temperature and which closes such passageway when the vapor temperature exceeds a temperature range contemplated for a limited foaming.
    Type: Grant
    Filed: October 22, 1975
    Date of Patent: April 11, 1978
    Assignee: Bucher-Guyer AG Maschinenfabrik
    Inventors: Klaus Schnellmann, Walter Kilchenmann, Hans Ulrich Hauser