Patents by Inventor Hans-Joachim Rusch

Hans-Joachim Rusch 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).

  • Individual source identification
    Patent number: 4833451
    Abstract: An individual source identification of several signal providers or pick-ups with closable contacts disposed in a twin-wire signal line, in particular for fire detectors in fire alarm systems. The signal pick-up system allows to distinguish actuation of individual sensors separately and apart from a short circuit formation. The fire alarm system also allows connection to automatic sprinkler devices. The fire sensor system is easy to install in that the individual settings of the individual detectors at a construction site are minimized.
    Type: Grant
    Filed: June 14, 1988
    Date of Patent: May 23, 1989
    Assignee: Total Walther Feuerschutz GmbH
    Inventors: Reinhold Lehmann, Hans-Joachim Rusch