Patents by Inventor Helmut Matschi

Helmut Matschi 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).

  • Circuit arrangement for triggering a safety system
    Patent number: 4933570
    Abstract: A circuit arrangement for triggering a safety system. A circuit arrangement serves the purpose of triggering a motor vehicle air bag system and contains an energy source, at least one release switch and at least two series branches connected in parallel and each branch has a tripping device for an air bag. A series capacitor is provided in every series branch, this capacitor limiting the current quantity in the tripped case in order to guarantee a reliable tripping of the further tripping device which acts with a time delay.
    Type: Grant
    Filed: January 22, 1988
    Date of Patent: June 12, 1990
    Assignee: Siemens Aktiengesellschaft
    Inventors: Marten Swart, Helmut Matschi