Patents by Inventor Christopher J. Revak

Christopher J. Revak 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).

  • Automatic voltage selector control circuit for test sets with tap selectable line input transformers
    Patent number: 8451639
    Abstract: An input adaptable electrical test set provides for the automatic detection of the power source connected to the test set, as well as automatic configuration of the test set to accommodate the identified power source. Prior to identification of the power source, a circuit breaker isolates a main transformer associated with the test set from receiving power from the power source. The main transformer includes a primary winding and a secondary winding, the primary winding having first, second and third tap positions that allows the transformer to be configured in one of two states depending on the power source connected to the test set. An automatic input voltage detection circuit monitors the input voltage provided by the unidentified power source and identifies the power source based on the monitored voltage.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: May 28, 2013
    Assignee: Electrical REliability Services, Inc.
    Inventor: Christopher J. Revak
  • Automatic voltage selector control circuit for test sets with tap selectable line input transformers
    Publication number: 20110199067
    Abstract: An input adaptable electrical test set provides for the automatic detection of the power source connected to the test set, as well as automatic configuration of the test set to accommodate the identified power source. Prior to identification of the power source, a circuit breaker isolates a main transformer associated with the test set from receiving power from the power source. The main transformer includes a primary winding and a secondary winding, the primary winding having first, second and third tap positions that allows the transformer to be configured in one of two states depending on the power source connected to the test set. An automatic input voltage detection circuit monitors the input voltage provided by the unidentified power source and identifies the power source based on the monitored voltage.
    Type: Application
    Filed: February 16, 2010
    Publication date: August 18, 2011
    Applicant: Electrical Reliability Services, Inc.
    Inventor: Christopher J. Revak
  • Live circuit resistance measurement system and method
    Patent number: 5600255
    Abstract: A method and apparatus for measuring the electrical resistance of a circuit energized with AC power. The invention imposes a known DC current in the circuit under test and senses a resulting DC voltage drop that corresponds to the resistance of the circuit. The invention senses AC overvoltage conditions in the circuit under test and electrically isolates the measuring circuit from the circuit under test.
    Type: Grant
    Filed: November 20, 1995
    Date of Patent: February 4, 1997
    Assignee: Electro-Test, Inc.
    Inventors: John H. Moore, Christopher J. Revak