Patents by Inventor Brenda Jane Roberts

Brenda Jane Roberts 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).

  • Integrated adaptive capacity control for a steam turbine powered chiller unit
    Patent number: 7328587
    Abstract: A control system for a steam turbine driven chiller unit is provided. The control system automatically utilizes the full range of the governor, compressor pre-rotation vanes, and hot gas bypass valve capabilities to control the capacity of the chiller and provide anti-surge and override control functions to prevent undesirable operational ranges while maintaining maximum efficiency of operation.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: February 12, 2008
    Assignee: York International Corporation
    Inventors: Dennis Lee Shaffer, Russell Mark Thompson, Stephen Michael Kachmar, Eric John Smyder, Brenda Jane Roberts, Daniel J. Petroskie, Ryan Perry Eisensmith