Patents by Inventor Stephen J. Bukowinski

Stephen J. Bukowinski 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).

  • Propeller blade angle closed loop control by solenoid modulation
    Patent number: 11827336
    Abstract: A system for controlling a propeller having a plurality of blades having a primary control system and a backup control system. The primary control system including a sensor responsive to a propeller state, and a controller connected to the sensor and to an electrohydraulic control actuator. The electrohydraulic control actuator is connected via a bypass valve to a hydraulic actuator that controls at least a blade angle of a blade of the propeller. The controller generating commands to the electrohydraulic control actuator based on at least the propeller state. The backup control system including a second controller, an electrohydraulic solenoid operably connected to the bypass valve. The backup control system is operable to hydraulically disable the primary control system via the bypass valve upon the occurrence of a selected condition, the second controller modulates the operation of the electrohydraulic solenoid to control the bypass actuator based on the propeller state.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: November 28, 2023
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Timothy Maver, Julien Lassalle, Thibaut Marger, Gregory Giddings, Charles L. DeGeorge, Stephen J. Bukowinski, Romain Bouloc
  • PROPELLER BLADE ANGLE CLOSED LOOP CONTROL BY SOLENOID MODULATION
    Publication number: 20200189721
    Abstract: A system for controlling a propeller having a plurality of blades having a primary control system and a backup control system. The primary control system including a sensor responsive to a propeller state, and a controller connected to the sensor and to an electrohydraulic control actuator. The electrohydraulic control actuator connected via a bypass valve to a hydraulic actuator that controls at least a blade angle of a blade of the propeller. The controller generating commands to the electrohydraulic control actuator based on at least the propeller state. The backup control system including a second controller, an electrohydraulic solenoid operably connected to the bypass valve. The backup control system operable to hydraulically disable the primary control system via the bypass valve upon the occurrence of a selected condition, the second controller modulates the operation of the electrohydraulic solenoid to control the bypass actuator based on the propeller state.
    Type: Application
    Filed: December 17, 2019
    Publication date: June 18, 2020
    Inventors: Timothy Maver, Julien Lassalle, Thibaut Marger, Gregory Giddings, Charles L. DeGeorge, Stephen J. Bukowinski, Romain Bouloc