Patents by Inventor J. M. Braun

J. M. Braun 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).

  • Overheated electrical insulation detector
    Patent number: 5157380
    Abstract: A method and apparatus for detecting insulation failure in a machine is disclosed. The machine includes an input duct for receiving a cooling gas, a gas mixture region producing a mixed gas including the cooling gas and gas produced by the thermal decomposition of insulation within the machine, and an output duct for discharging the mixed gas. A first gas sample is obtained near the input duct and a second gas sample is obtained near the output duct. An analyzer is employed to assess the difference between the first sample and the second sample. This assessment detects potential thermal decomposition of the insulation within the machine. If thermal decomposition is present, a warning signal is provided.
    Type: Grant
    Filed: February 15, 1991
    Date of Patent: October 20, 1992
    Assignee: Electric Power Research Institute, Inc.
    Inventors: J. M. Braun, D. F. Mullins