Patents by Inventor Werner Huppertz

Werner Huppertz 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).

  • Faulted circuit indicatior with variable load levelling circuit
    Patent number: 5754383
    Abstract: A faulted circuit indicator includes a variable load levelling circuit which can automatically adjust itself to a peak current in order to accommodate a relatively wide range of load currents. The variable load levelling circuit is operatively connected to a current sensing circuit and is responsive to a varying load current flowing through the cable for regulating a variable output voltage therefrom to be at a constant reference value. As a result, the need to store in inventory large quantities of fault indicators with different rated currents has been substantially reduced.
    Type: Grant
    Filed: August 21, 1995
    Date of Patent: May 19, 1998
    Assignee: Dipl.-Ing H. Horstmann GmbH
    Inventors: Werner Huppertz, Hendrik Horstmann
  • Circuitry for the electrolytic coloring of anodized aluminum surfaces
    Patent number: 4992155
    Abstract: A process and circuitry for the electrolytic coloring of an anodized article of aluminum or aluminum alloy in a coloring bath containing at least one metal salt for coloring the article. The process comprises applying to the coloring bath a controllable, asymmetrical and substantially sinusoidal a.c. voltage of substantially constant frequency. The sinusoidal a.c. voltage is obtained from a voltage source supplying a symmetrical sinusoidal a.c. voltage and at least one of the two current paths is divided into two parallel main lines and fed to electrical components whereby the amplitude level of the positive half wave and the amplitude level of the negative half wave and the ratio of the amplitude level of the positive half wave to the amplitude level of the negative half wave of the a.c.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: February 12, 1991
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Dieter Brodalla, Werner Huppertz, Georg Wagner, James W. Costello, Karl-Heinz Munk
  • Process for the electrolytic coloring of anodized aluminum surfaces
    Patent number: 4915801
    Abstract: A process and circuitry for the electrolytic coloring of an anodized article of aluminum or aluminum alloy in a coloring bath containing at least one metal salt for coloring the article. The process comprises applying to the coloring bath a controllable, asymmetrical and substantially sinusoidal a.c. voltage of substantially constant frequency. The sinusoidal a.c. voltage is obtained from a voltage source supplying a symmetrical sinusoidal a.c. voltage and at least one of the two current paths is divided into two parallel main lines and fed to electrical components whereby the amplitude level of the positive half wave and the amplitude level of the negative half wave and the ratio of the amplitude level of the positive half wave to the amplitude level of the negative half wave of the a.c.
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: April 10, 1990
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Dieter Brodalla, Werner Huppertz, Georg Wagner, James W. Costello, Karl-Heinz Munk