Patents by Inventor Charles T. French

Charles T. French 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).

  • Automatic steam generator feedwater control over full power range
    Patent number: 4777009
    Abstract: A water level control for a steam generator of a pressurized water type of nuclear steam supply system varies the water level demand as a function of power. The control also varies the water feed rate after a reactor trip initially as a function of reactor coolant average temperature.
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: October 11, 1988
    Assignee: Combustion Engineering, Inc.
    Inventors: Gurdip Singh, Charles T. French
  • Turbine trip system
    Patent number: 4123909
    Abstract: An improved high-water-level trip control for a steam turbine is disclosed. Instead of causing a trip of the turbine (or reactor) based merely on the water level in the steam generator, the present invention generates a trip command that is based on a function of more than one parameter. Such a function more accurately indicates the quantity of water droplets in the steam leaving the steam generator than a function of a single parameter does. In particular, it is disclosed to trip the turbine when the water level exceeds a variable reference that increases as steam velocity decreases; this takes into account the effect of steam velocity on the entrainment of water droplets by the steam.
    Type: Grant
    Filed: December 20, 1976
    Date of Patent: November 7, 1978
    Assignee: Combustion Engineering, Inc.
    Inventor: Charles T. French