Patents by Inventor Alan Lee Wooldridge

Alan Lee Wooldridge 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).

  • Patent number: 11204001
    Abstract: A rocket engine pintle injector with optimized spray pattern and with integrated igniter design for providing construction simplicity, throttleable thrust, stop/start/restart capability, optimized operational combustion, and improved ignition combustion stability. A user can start, throttle, and stop the engine by moving the internal concentric injector sleeve forward and backward to cause the fuel/oxidizer to spray out of the pintle head at different flow rates. The concentric igniter can be deployed so that the hot gasses or spark produced are radially projected into the spray of fuel/oxidizer surrounding the igniter. Once the fuel/oxidizer spray has been ignited, the igniter is stopped and retracted to protect the device from the heat of the combustion chamber and is ready for redeployment and restart of the engine as needed.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: December 21, 2021
    Inventor: Alan Lee Wooldridge
  • Publication number: 20200332744
    Abstract: A rocket engine pintle injector with optimized spray pattern and with integrated ignitor design for providing construction simplicity, throttleable thrust, stop/start/restart capability, optimized operational combustion, and improved ignition combustion stability. A user can start, throttle, and stop the engine by moving the internal concentric injector sleeve forward and backward to cause the fuel/oxidizer to spray out of the pintle head at different flow rates. The concentric ignitor can be deployed so that the hot gasses or spark produced are radially projected into the spray of fuel/oxidizer surrounding the ignitor. Once the fuel/oxidizer spray has been ignited, the ignitor is stopped and retracted to protect the device from the heat of the combustion chamber and is ready for redeployment and restart of the engine as needed.
    Type: Application
    Filed: April 16, 2019
    Publication date: October 22, 2020
    Inventor: Alan Lee Wooldridge