Patents by Inventor Edward J. Koegler

Edward J. Koegler 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).

  • Non-invasive cable tester
    Patent number: 6737871
    Abstract: The present invention is a non-invasive cable tester. The cable tester comprises a sensor for detecting an electric field emitted by a live electric cable. The resulting signal from the sensor is then filtered, amplified, and compared to a threshold value to determine the energization status of the electric cable. A meter can be provided to get a reading of the amplified signal that can be compared to a predetermined threshold value. Also, a detector circuit can be provided that includes a comparator in electrical communication with a light-emitting device such as a light-emitting diode. The detector circuit processes the amplified signal and compares it to a predetermined threshold value. If the electric cable is energized, the output of the comparator either causes the light-emitting device to emit light or not emit light, as desired. This enables an operator to determine the status of the electric cable simply by determining whether the light-emitting device is lit.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: May 18, 2004
    Assignee: American Electric Power Co., Inc.
    Inventors: John M. Schneider, James R. Booker, Edward J. Koegler, John D. Mandeville
  • Non-invasive cable tester
    Patent number: 6531880
    Abstract: The present invention is a non-invasive cable tester. The cable tester comprises a sensor for detecting an electric field emitted by a live electric cable. The resulting signal from the sensor is then filtered, amplified, and compared to a threshold value to determine the energization status of the electric cable. A meter can be provided to get a reading of the amplified signal that can be compared to a predetermined threshold value. Also, a detector circuit can be provided that includes a comparator in electrical communication with a light-emitting device such as a light-emitting diode. The detector circuit processes the amplified signal and compares it to a predetermined threshold value. If the electric cable is energized, the output of the comparator either causes the light-emitting device to emit light or not emit light, as desired. This enables an operator to determine the status of the electric cable simply by determining whether the light-emitting device is lit.
    Type: Grant
    Filed: July 3, 2000
    Date of Patent: March 11, 2003
    Assignee: American Electric Power Company, Inc.
    Inventors: John M. Schneider, James R. Booker, Edward J. Koegler, John D. Mandeville