Patents by Inventor Thomas J. Kostrzewa

Thomas J. Kostrzewa 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).

  • Pulse width modulation control of solenoid motor
    Patent number: 9448462
    Abstract: A drive mechanism configured to drive a thermally isolated actuator between two positions. The drive mechanism includes a rotary actuated motor configured to rotatably drive a motor member, and a drive member coupled to the motor member and having a drive arm configured to responsively move from a first position to a second position upon rotation of the motor member. An actuator is responsive to movement of the drive arm moved from the first position to the second position. A drive circuit is configured to generate a pulse width modulated (PWM) drive signal configured to controllably drive the motor, the PWM drive signal having a first duty cycle configured to advance the drive arm from the first position, and having a second duty cycle different than the first duty cycle as the drive arm approaches the second position. The drive signal may be removed before the drive arm engages a hard stop.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: September 20, 2016
    Assignee: Raytheon Company
    Inventors: Amy M. Yoshida, Thomas J. Kostrzewa, Eric T. Hughes, Michael L. Brest, Eric J. Griffin, Jerry Hershberg
  • PULSE WIDTH MODULATION CONTROL OF SOLENOID MOTOR
    Publication number: 20140361713
    Abstract: A drive mechanism configured to drive a thermally isolated actuator between two positions. The drive mechanism includes a rotary actuated motor configured to rotatably drive a motor member, and a drive member coupled to the motor member and having a drive arm configured to responsively move from a first position to a second position upon rotation of the motor member. An actuator is responsive to movement of the drive arm moved from the first position to the second position. A drive circuit is configured to generate a pulse width modulated (PWM) drive signal configured to controllably drive the motor, the PWM drive signal having a first duty cycle configured to advance the drive arm from the first position, and having a second duty cycle different than the first duty cycle as the drive arm approaches the second position. The drive signal may be removed before the drive arm engages a hard stop.
    Type: Application
    Filed: January 31, 2014
    Publication date: December 11, 2014
    Applicant: Raytheon Company
    Inventors: Amy M. Yoshida, Thomas J. Kostrzewa, Eric T. Hughes, Michael L. Brest, Eric J. Griffin, Jerry Hershberg