Patents by Inventor Karmen Darrell Cox

Karmen Darrell Cox 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).

  • Patent number: 9503001
    Abstract: An HVAC control system, associated brushless direct current motor, and methods of operation are disclosed. One such control system includes a brushless direct current motor and an optically-isolated interface exposing control access to the brushless direct current motor. The system includes a first programmable controller electrically connected to the brushless direct current motor, the programmable controller configured to receive a control signal via the optically-isolated interface, and a second programmable controller providing the control signal to the optically-isolated interface.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: November 22, 2016
    Assignee: McMillan Electric Company
    Inventors: Dewain Wasson, Karmen Darrell Cox
  • Publication number: 20140277758
    Abstract: An HVAC control system, associated brushless direct current motor, and methods of operation are disclosed. One such control system includes a brushless direct current motor and an optically-isolated interface exposing control access to the brushless direct current motor. The system includes a first programmable controller electrically connected to the brushless direct current motor, the programmable controller configured to receive a control signal via the optically-isolated interface, and a second programmable controller providing the control signal to the optically-isolated interface.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Inventors: Dewain Wasson, Karmen Darrell Cox