Patents by Inventor Robert S. Foley

Robert S. Foley 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).

  • Publication number: 20100040931
    Abstract: A fuel cell system that includes a single enclosure for all of a fuel cell stack and other stack critical electronics and components, such as power distribution components, voltage monitoring and detecting components, electrical isolation components, etc. The single enclosure offers a number of advantages, such as reduced weight and reduced complexity for service and safety.
    Type: Application
    Filed: August 12, 2008
    Publication date: February 18, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Matthew K. Hortop, Bernd Peter Elgas, Robert S. Foley, David John Keyes
  • Publication number: 20100003546
    Abstract: A fuel cell system is provided that includes a fuel cell stack with a plurality of fuel cells and a power converter in electrical communication with the fuel cell stack. The power converter is configured to selectively regulate a power of the fuel cell stack and short circuit the fuel cell stack, as desired. A method for starting the fuel cell stack is also described including the steps of causing a short circuit of the fuel cell stack by placing the power converter in a short circuit mode; introducing a hydrogen to the anodes of the fuel cell stack to displace a quantity of air on the anodes; and placing the power converter in a power regulation mode. A degradation of the fuel cell stack during start-up is thereby militated against.
    Type: Application
    Filed: January 15, 2008
    Publication date: January 7, 2010
    Inventors: Clark G. Hochgraf, Robert S. Foley, Matthew K. Hortop, Balasubramanian Lakshmanan
  • Patent number: 7421356
    Abstract: A method and apparatus for a high frequency resistance measurement instrument with a reasonable dynamic range, which militates against saturation in the presence of one or more large undesirable signals, the high frequency measurement instrument capable of employing multiple alternating currents of differing frequencies to maintain measurement capability despite signal chain saturation in the presence of a large undesirable signal.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: September 2, 2008
    Assignee: GM Global Technology Operations, Inc.
    Inventors: David Rea, Kenneth L. Kaye, Robert S. Foley, Michael F. Zawisa, Clark G. Hochgraf
  • Publication number: 20080187802
    Abstract: At least one positive temperature coefficient element is used to efficiently control fuel cell voltage at startup and shutdown making the fuel cell more efficient and protecting the electro catalyst layer.
    Type: Application
    Filed: October 16, 2006
    Publication date: August 7, 2008
    Applicant: GM Global Technology Operations, Inc.
    Inventors: Benno Andreas-Schott, Glenn W. Skala, Jeffrey A. Rock, Balsu Lakshmanan, Robert S. Foley, Michael W. Murphy
  • Publication number: 20080091367
    Abstract: A method and apparatus for a high frequency resistance measurement instrument with a reasonable dynamic range, which militates against saturation in the presence of one or more large undesirable signals, the high frequency measurement instrument capable of employing multiple alternating currents of differing frequencies to maintain measurement capability despite signal chain saturation in the presence of a large undesirable signal.
    Type: Application
    Filed: September 29, 2006
    Publication date: April 17, 2008
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: David Rea, Kenneth L. Kaye, Robert S. Foley, Michael F. Zawisa, Clark G. Hochgraf
  • Patent number: 6359266
    Abstract: A control system for delivering a constant fuser temperature despite variations in the line voltage is effected by a control circuit which employs closed loop feedback control to control the rms voltage across the load. This is accomplished by a circuit and method which functionally provides a continuous solution to the equation which describes the relationship between the temperature of the fuser and the temperature of a desired control setpoint. Briefly, the solution of this equation is obtained by monitoring, i.e. sampling, the temperature of the fuser, subtracting the desired control temperature, and then integrating the difference over time. The resultant time integral is used to control the operating point of a pulse width modulated power controller. The integrator has a time constant sufficiently long and the power controller operates at a frequency sufficiently high so as to render lighting flicker imperceptible.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: March 19, 2002
    Assignee: Xerox Corporation
    Inventors: Daniel B. Little, Robert S. Foley
  • Publication number: 20010004073
    Abstract: A control system for delivering a constant fuser temperature despite variations in the line voltage. In general, this is effected by a control circuit which employs closed loop feedback control to control the rms voltage across the load. This is accomplished by a circuit and method which functionally provides a continuous solution to the equation which describes the relationship between the temperature of the fuser and the temperature of a desired control setpoint. Briefly, the solution of this equation is obtained by monitoring, i.e. sampling, the temperature of the fuser, subtracting the desired control temperature, and then integrating the difference over time. The resultant time integral is used to control the operating point of a pulse width modulated power controller. The integrator has a time constant sufficiently long and the power controller operates at a frequency sufficiently high so as to render lighting flicker imperceptible.
    Type: Application
    Filed: December 18, 2000
    Publication date: June 21, 2001
    Applicant: Xerox Corporation
    Inventors: Daniel B. Little, Robert S. Foley
  • Patent number: D351803
    Type: Grant
    Filed: March 2, 1993
    Date of Patent: October 25, 1994
    Assignee: Newport Electronics, Inc.
    Inventor: Robert S. Foley