Patents by Inventor Ludwig Juffinger

Ludwig Juffinger 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).

  • Ignition system and principle of operation
    Patent number: 6138653
    Abstract: An electric ignition device for an internal combustion engine having a primary and a secondary circuit coupled together by a transformer. The secondary circuit includes a spark gap. The primary circuit includes a capacitor that can be discharged. The voltage discharged by the capacitor is coupled by the transformer to the secondary circuit where it produces an ignition spark across the spark gap. The primary circuit is a resonant circuit that is repeatedly excited keeping the ignition spark burning as an arc. Current or voltage in the secondary circuit are detected to control the energy introduced into the spark gap.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: October 31, 2000
    Assignee: Ficht GmbH & Co. KG
    Inventor: Ludwig Juffinger