Patents by Inventor Rudiger Weich

Rudiger Weich 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).

  • Gas mask for normal pressure operation and overpressure operation
    Patent number: 7575004
    Abstract: A gas mask for normal pressure operation and overpressure operation allows changeover of the expiration valve (4) from normal pressure operation to overpressure operation is made possible in a simple manner. The pretension of the valve spring (7) of the expiration valve (4) is adjusted by an angle lever (10) pivotable about an axis of rotation (13).
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: August 18, 2009
    Assignee: Dräger Safety AG & Co. KGaA
    Inventors: Rüdiger Weich, Thomas Grassl, Rüdiger Müller, Manfred Gdulla, Siegbert Tolk, Olaf Balke
  • Gas mask for normal pressure operation an overpressure operation
    Publication number: 20060086360
    Abstract: A gas mask for normal pressure operation and overpressure operation allows changeover of the expiration valve (4) from normal pressure operation to overpressure operation is made possible in a simple manner. The pretension of the valve spring (7) of the expiration valve (4) is adjusted by an angle lever (10) pivotable about an axis of rotation (13).
    Type: Application
    Filed: August 2, 2005
    Publication date: April 27, 2006
    Applicant: Drager Safety AG & Co. KGaA
    Inventors: Rudiger Weich, Thomas Grassl, Rudiger Muller, Manfred Gdulla, Siegbert Tolk, Olaf Balke