Patents by Inventor Volker Karrer

Volker Karrer 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).

  • False-closure detection device for electrical consumers
    Patent number: 6232781
    Abstract: Electrical consumers receive load current from a supply voltage via two or more power switches. A false-closure detection device includes a measuring device and a diagnostic device for the detection of faults. The measuring device is connected parallel to the power switches and the electrical consumer lying in series with the switches. A diagnostic voltage is compared as the output signal of the measuring device with a reference value for the detection of false closures in the load circuit.
    Type: Grant
    Filed: June 4, 1998
    Date of Patent: May 15, 2001
    Assignee: Siemens Aktiengesellschaft
    Inventors: Gerhard Göser, Andrea Hinterwimmer, Volker Karrer, Dieter Sass