Patents by Inventor Steven J. Perreault

Steven J. Perreault 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 regulation of AC drive
    Patent number: 7312593
    Abstract: An apparatus for the thermal regulation of an AC drive for providing power to a motor includes a temperature sensor producing a signal indicative of temperature, a heater resistor connectable across a DC link of the AC drive, and a first switch. A controller is operable to monitor the temperature signal and control the first switch to provide power via the DC link to the heater resistor if the sensed temperature is below a predetermined setpoint.
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: December 25, 2007
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: John T. Streicher, Steven J. Perreault, Jeffrey P. Rivard, David W. Siegler