Patents by Inventor Hans J. Sternfeld

Hans J. Sternfeld 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).

  • Injection element for a combustion reactor, more particularly, a steam generator
    Patent number: 4916904
    Abstract: The injection element comprises a fuel inlet, an oxidant inlet, a mixing mber for fuel and oxidant, and an ignition device for a mixture of fuel and oxidant. To ensure optimum mixing of the reaction components and efficient ignition even in the case of small reactors, the fuel inlet opens into an ignition chamber having a widened flow cross-section, the ignition chamber has an outlet having a cross-section smaller than the flow cross-section of the ignition chamber, the outlet of the ignition chamber and the oxidant inlet open into the mixing chamber, an ignition oxidant inlet opens into the ignition chamber and the ignition device is disposed in the ignition chamber immediately upstream of its outlet.
    Type: Grant
    Filed: September 7, 1989
    Date of Patent: April 17, 1990
    Assignee: Deutsche Forschungs- und Versuchsanstalt fur Luft und Raumfahrt e.V.
    Inventors: Manfred Ramsaier, Hans J. Sternfeld, Karlheinz Wolfmuller
  • Method of producing vapor for use in a vapor sterilizing process
    Patent number: 4892705
    Abstract: A method of generating a sterilizing vapor for use in a vapor sterilizing ocess, the method including the steps of burning a fuel selected from the group consisting of combustible gases and combustible aerosols, whereby hot combustion gases are generated, and introducing a liquid into said hot combustion gases, whereby the liquid is evaporated to form the sterilizing vapor.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: January 9, 1990
    Assignees: Fr. Kammerer GmbH, Deutsche Forschungs-und Versuchsaustalt fur luft-und Raumfahrt e.V.
    Inventors: Hans J. Sternfeld, Karlheinz Wolfmuller, Rodhardt Froese, Manfred Paulus
  • Steam generator
    Patent number: 4474140
    Abstract: An injection head introduces H.sub.2 and O.sub.2 into one end of an elongate combustion chamber. At the same time, water is injected into the chamber through peripheral ducts to form a water curtain, or through inlets in the injection head, or through apertures facing away from the injection head in water-cooled tubing extending in a plane perpendicular to the chamber axis.
    Type: Grant
    Filed: December 30, 1982
    Date of Patent: October 2, 1984
    Inventors: Hans J. Sternfeld, Josef Reinkenhof, Heinrich Lambrecht
  • Steam generator
    Patent number: 4377067
    Abstract: An injection head introduces H.sub.2 and O.sub.2 into one end of an elongate combustion chamber. At the same time, water is injected into the chamber through peripheral ducts to form a water curtain, or through inlets in the injection head, or through apertures facing away from the injection head in water-cooled tubing extending in a plane perpendicular to the chamber axis.
    Type: Grant
    Filed: November 24, 1980
    Date of Patent: March 22, 1983
    Assignee: Deutsche Forschungs- und Versuchsanstalt fur Luft- und Raumfahrt
    Inventors: Hans J. Sternfeld, Josef Reinkenhof, Heinrich Lambrecht