Patents by Inventor Matthias Mengele

Matthias Mengele 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).

  • High-pressure discharge lamp having decoupled ignition and load circuits
    Patent number: 5990633
    Abstract: The invention relates to circuitry for the operation of a high-pressure dharge lamp including a voltage transformer (T1, T2), preferably a push-pull transformer, a transformer (TR1) connected to the output of the voltage transformer (T1, T2), a pulse ignition device, and a load circuit designed as a ocrial resonance circuit (L1, C1) into which the high-pressure discharge lamp (LP) is switched. The transformer (TR1) possesses at least two secondary windings (w1c, w1d), wherein the first secondary winding (w1c) switches into the load circuit and the second secondary winding (w1d) is connected to the pulse ignition device at the voltage input. The ignition voltage output of the pulse ignition device is designed to be connected to an auxiliary ignition electrode (ZE) of the high-pressure discharge lamp (LP).
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: November 23, 1999
    Assignee: Patent-Treuhand-Gessellschaft fur elektrische Gluehlampen mbH
    Inventors: Guenther Hirschmann, Stefan Mueller, Matthias Mengele, Christian Wittig, Bernd Lewandowski