Patents by Inventor David W. Casson

David W. Casson 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).

  • Method and apparatus for detecting wear in components of high voltage electrical equipment
    Patent number: 7053625
    Abstract: A tracer material is embedded in a component of electrical equipment to detect excessive wear of the component when it is exposed to an electrical arc. As the component wears, the tracer material becomes exposed to the electrical arc and emits electromagnetic radiation, which is monitored continuously. The tracer material is selected so that it emits electromagnetic radiation when it is exposed to an electrical arc that is distinct from electromagnetic radiation emitted by any other parts of the component. A fluorescent tracer material may also be used.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: May 30, 2006
    Assignee: Electric Power Research Institute, Inc.
    Inventors: Nicola Dominelli, Hans Schellhase, David W. Casson, Edward A. Hall
  • Method and apparatus for detecting wear in components of high voltage electrical equipment
    Patent number: 6777948
    Abstract: A tracer material is embedded in a component of electrical equipment to detect excessive wear of the component when it is exposed to an electrical arc. As the component wears, the tracer material becomes exposed to the electrical arc and emits electromagnetic radiation, which is monitored continuously. The tracer material is selected so that it emits electromagnetic radiation when it is exposed to an electrical arc that is distinct from electromagnetic radiation emitted by any other parts of the component.
    Type: Grant
    Filed: September 11, 2002
    Date of Patent: August 17, 2004
    Assignee: Electric Power Research Institute, Inc.
    Inventors: Nicola Dominelli, Hans Schellhase, David W. Casson, Edward A. Hall
  • Method and apparatus for detecting wear in components of high voltage electrical equipment
    Publication number: 20040046563
    Abstract: A tracer material is embedded in a component of electrical equipment to detect excessive wear of the component when it is exposed to an electrical arc. As the component wears, the tracer material becomes exposed to the electrical arc and emits electromagnetic radiation, which is monitored continuously. The tracer material is selected so that it emits electromagnetic radiation when it is exposed to an electrical arc that is distinct from electromagnetic radiation emitted by any other parts of the component.
    Type: Application
    Filed: September 11, 2002
    Publication date: March 11, 2004
    Inventors: Nicola Dominelli, Hans Schellhase, David W. Casson, Edward A. Hall