Patents by Inventor Gregor Ploeger

Gregor Ploeger 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).

  • Relay with overload protection
    Patent number: 5889453
    Abstract: A relay for overcurrent or short-circuit protection is provided wherein the relay has a thermistor in the form of a film of polymer material. The thermistor is arranged over a large surface in the interior of the relay between a connection segment of a terminal element and a terminal plate coupled parallel thereto. By such design, the thermistor is serially connected into the load circuit of the relay. Upon the appearance of either an overcurrent or a short circuit, the thermistor makes an immediate shift to a high resistance value, thereby interrupting the load circuit.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: March 30, 1999
    Assignee: Siemens Aktiengesellschaft
    Inventors: Richard Siepmann, Gregor Ploeger