Patents by Inventor Axel Hemmer

Axel Hemmer 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).

  • Thermal triggering mechanism having a glass ampoule for aerosol fire extinguishers
    Patent number: 8596372
    Abstract: The invention relates to a method for thermally initiated triggering of an aerosol fire extinguisher having a strike pin (6) acted upon by an inner spring (7) and locked in the stand-by state, and after thermal initiation, the lock is removed and the strike pin (6), driven by the force of the inner spring (7), strikes against a mechanical firing cap (1), whereby an initial firing material is released in the firing cap (1), igniting a booster charge (2), the hot conversion gas thereof igniting a pyrotechnic extinguisher charge in the aerosol fire extinguisher. In order that an absolutely reliable initiation takes place under the same conditions throughout the entire service life of the aerosol fire extinguisher, it is proposed that only immediately after the thermal initiation, when the firing pin (6) is still locked, the inner spring (7) is brought to the necessary tension for triggering the firing cap (1), and only after reaching said tension is the lock of the firing pin (6) automatically released.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: December 3, 2013
    Assignee: Dynamit Nobel Defence GmbH
    Inventors: Jiang Zhang, Peter Kloft, Klaus-Jurgen Dell, Matthias Agostin, Stephan Cordes, Axel Hemmer, Michael Köller, Herbert Weisshaupt, Alexandra Welp
  • THERMAL TRIGGERING MECHANISM HAVING A GLASS AMPOULE FOR AEROSOL FIRE EXTINGUISHERS
    Publication number: 20110036600
    Abstract: The invention relates to a method for thermally initiated triggering of an aerosol fire extinguisher having a strike pin (6) acted upon by an inner spring (7) and locked in the stand-by state, and after thermal initiation, the lock is removed and the strike pin (6), driven by the force of the inner spring (7), strikes against a mechanical firing cap (1), whereby an initial firing material is released in the firing cap (1), igniting a booster charge (2), the hot conversion gas thereof igniting a pyrotechnic extinguisher charge in the aerosol fire extinguisher. In order that an absolutely reliable initiation takes place under the same conditions throughout the entire service life of the aerosol fire extinguisher, it is proposed that only immediately after the thermal initiation, when the firing pin (6) is still locked, the inner spring (7) is brought to the necessary tension for triggering the firing cap (1), and only after reaching said tension is the lock of the firing pin (6) automatically released.
    Type: Application
    Filed: December 4, 2008
    Publication date: February 17, 2011
    Inventors: Jiang Zhang, Peter Kloft, Klaus-Jurgen Dell, Matthias Agostin, Stephan Cordes, Axel Hemmer, Michael Köller, Herbert Weisshaupt, Alexandra Welp