Patents by Inventor Jurgen Coym

Jurgen Coym 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).

  • Warning device to indicate the state of gases exhaustion of a gas filter retaining dangerous gases
    Patent number: 4873970
    Abstract: A warning device comprised of an electrochemical cell which detects the concentration of toxic gas that is passing through a housing holding the cell to a face mask. The cell produces a signal corresponding to the concentration level of toxic gas present. The signal is received by a threshold switch which is set to produce a signal only when a signal from the cell equals or exceeds a predetermined level. The signal from the threshold switch activates a visual signal means and acoustical signal means to indicate that a gas filter, connected to the warning device, is exhausted.
    Type: Grant
    Filed: March 10, 1989
    Date of Patent: October 17, 1989
    Assignee: Auergesellschaft GmbH
    Inventors: Michael Freidank, Jurgen Coym, Axel Schubert