Patents by Inventor Patrick R. Darmstadt

Patrick R. Darmstadt 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).

  • Integrated electric propulsion unit
    Patent number: 11794913
    Abstract: An electric propulsion unit comprising a housing, an AC motor, a beta rod, a propeller, a governor, an inverter, and a controller. The AC motor is disposed within the housing and includes bearings supported inside the housing, a hollow motor shaft rotatably coupled to the housing by the bearings, a stator which is supported by the housing, and a rotor which is mounted to the hollow motor shaft. The beta rod is axially translatable inside the hollow motor shaft. The propeller is mechanically coupled to the hollow motor shaft. The propeller includes propeller blades having an adjustable pitch angle which depends on an axial position of the beta rod. The governor is configured to adjust a pitch angle of the propeller blades by actuating axial translation of the beta rod. The controller is disposed inside the housing and configured to control the pitch angle of the propeller blades.
    Type: Grant
    Filed: July 16, 2021
    Date of Patent: October 24, 2023
    Assignee: The Boeing Company
    Inventors: Frederic Lacaux, Kamiar J. Karimi, Eugene V. Solodovnik, Aaron J. Kutzmann, Patrick R. Darmstadt, Mary E. Beckman, Alejandro Silva, Nicholas J. Silveri, Esther S. Zidovetzki
  • Integrated Electric Propulsion Unit
    Publication number: 20220119121
    Abstract: An electric propulsion unit comprising a housing, an AC motor, a beta rod, a propeller, a governor, an inverter, and a controller. The AC motor is disposed within the housing and includes a plurality of bearings supported inside the housing, a hollow motor shaft rotatably coupled to the housing by the plurality of bearings, a stator which is supported by the housing, and a rotor which is mounted to the hollow motor shaft. The beta rod is axially translatable inside the hollow motor shaft. The propeller is mechanically coupled to the hollow motor shaft. The propeller includes propeller blades having an adjustable pitch angle which depends on an axial position of the beta rod. The governor is configured to adjust a pitch angle of the propeller blades by actuating axial translation of the beta rod. The inverter is disposed within the housing and connected to receive DC power for conversion into AC power.
    Type: Application
    Filed: July 16, 2021
    Publication date: April 21, 2022
    Applicant: The Boeing Company
    Inventors: Frederic Lacaux, Kamiar J. Karimi, Eugene V. Solodovnik, Aaron J. Kutzmann, Patrick R. Darmstadt, Mary E. Beckman, Alejandro Silva, Nicholas J. Silveri, Esther S. Zidovetzki
  • METHODS OF ASSEMBLING A THERMOELECTRIC GENERATOR
    Publication number: 20180219149
    Abstract: A thermoelectric generator for powering a load includes a first mounting plate, a second mounting plate, and a plurality of semiconductors positioned between the first and the second mounting plates. The plurality of semiconductors includes one of positive-type or negative-type semiconductor material.
    Type: Application
    Filed: March 27, 2018
    Publication date: August 2, 2018
    Inventors: Shawn M. Smith, Patrick R. Darmstadt
  • THERMOELECTRIC GENERATOR
    Publication number: 20160197260
    Abstract: A thermoelectric generator for powering a load includes a first mounting plate, a second mounting plate, and a plurality of semiconductors positioned between the first and the second mounting plates. The plurality of semiconductors includes one of positive-type or negative-type semiconductor material.
    Type: Application
    Filed: January 5, 2015
    Publication date: July 7, 2016
    Inventors: Shawn M. Smith, Patrick R. Darmstadt