Patents by Inventor Richard Graham, III

Richard Graham, III 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 to detect shorted solenoid coils
    Patent number: 7609069
    Abstract: A method for testing the continuity of a coil that is subjected to a high frequency pulse modulated current that includes sensing a coil voltage, determining a ratio of the sensed coil voltage to the supply voltage and comparing the ratio to a threshold to determine whether the solenoid coil is functional.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: October 27, 2009
    Assignee: Kelsey-Hayes Company
    Inventors: Robert Berg, Richard Graham, III, Christy J. Bose, Scott E. Carpenter
  • Method to detect shorted solenoid coils
    Publication number: 20090108849
    Abstract: A method for testing the continuity of a coil that is subjected to a high frequency pulse modulated current that includes sensing a coil voltage and comparing a ratio of the sensed coil voltage to the supply voltage to a threshold to determine whether the solenoid coil is functional.
    Type: Application
    Filed: October 31, 2007
    Publication date: April 30, 2009
    Inventors: Robert Berg, Richard Graham, III, Christy J. Bose, Scott E. Carpenter