Patents by Inventor Roger Henry Therrien

Roger Henry Therrien 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).

  • System and method for thermal limit control
    Patent number: 7969177
    Abstract: This disclosure relates to a system and method for pulse generation. A system in accordance with the present disclosure may include a power dissipating element configured to receive power from a power source. At least one of the power source and the power dissipating element may be configured to generate a first signal. The system may further include a measuring instrument in communication with the power source. The measuring instrument may be configured to measure the first signal and to provide an input corresponding to a measured signal to a duty cycle limiter. The system may also include a pulse controller operatively connected to the power source. The pulse controller may be configured to control a duty cycle of the first signal and to receive a second signal from the duty cycle limiter. The pulse controller may be configured to disable at least one of the power source and the power dissipating element if the duty cycle limiter has determined that a maximum condition has been exceeded.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: June 28, 2011
    Assignee: LTX—Credence Corporation
    Inventors: Philip Earle Perkins, Stephen Frederick Limoges, Jr., Xiaomin Yan, James William McGinley, Roger Henry Therrien
  • SYSTEM AND METHOD FOR THERMAL LIMIT CONTROL
    Publication number: 20100156492
    Abstract: This disclosure relates to a system and method for pulse generation. A system in accordance with the present disclosure may include a power dissipating element configured to receive power from a power source. At least one of the power source and the power dissipating element may be configured to generate a first signal. The system may further include a measuring instrument in communication with the power source. The measuring instrument may be configured to measure the first signal and to provide an input corresponding to a measured signal to a duty cycle limiter. The system may also include a pulse controller operatively connected to the power source. The pulse controller may be configured to control a duty cycle of the first signal and to receive a second signal from the duty cycle limiter. The pulse controller may be configured to disable at least one of the power source and the power dissipating element if the duty cycle limiter has determined that a maximum condition has been exceeded.
    Type: Application
    Filed: December 22, 2008
    Publication date: June 24, 2010
    Inventors: Philip Earle Perkins, Stephen Frederick Limoges, JR., Xiaomin Yan, James William McGinley, Roger Henry Therrien