Patents by Inventor David E. Cottongim

David E. Cottongim 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).

  • Thermal foldback for a lamp control device
    Patent number: 7911156
    Abstract: The output current of a ballast is dynamically limited when an over-temperature condition is detected in the ballast according to one of (i) a step function or (ii) a combination of step and continuous functions, so as to reduce the temperature of the ballast while continuing to operate it.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: March 22, 2011
    Assignee: Lutron Electronics Co., Inc.
    Inventors: David E. Cottongim, Jecko Arakkal, Venkatesh Chitta, Mark S. Taipale
  • Thermal Foldback For A Lamp Control Device
    Publication number: 20090033248
    Abstract: The output current of a ballast is dynamically limited when an over-temperature condition is detected in the ballast according to one of (i) a step function or (ii) a combination of step and continuous functions, so as to reduce the temperature of the ballast while continuing to operate it.
    Type: Application
    Filed: September 30, 2008
    Publication date: February 5, 2009
    Inventors: David E. Cottongim, Jecko Arakkal, Venkatesh Chitta, Mark S. Taipale
  • Thermal protection for lamp ballasts
    Patent number: 6982528
    Abstract: The output current of a ballast is dynamically limited when an over-temperature condition is detected in the ballast according to one of (i) a step function or (ii) a combination of step and continuous functions, so as to reduce the temperature of the ballast while continuing to operate it.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: January 3, 2006
    Assignee: Lutron Electronics Co., Inc.
    Inventors: David E. Cottongim, Jecko Arakkal, Venkatesh Chitta, Mark S. Taipale