The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 24, 2023
Filed:
Jul. 16, 2021
The Boeing Company, Chicago, IL (US);
Frederic Lacaux, Woodinville, WA (US);
Kamiar J. Karimi, Kirkland, WA (US);
Eugene V. Solodovnik, Lake Stevens, WA (US);
Aaron J. Kutzmann, Long Beach, CA (US);
Patrick R. Darmstadt, Claymont, DE (US);
Mary E. Beckman, West Chester, PA (US);
Alejandro Silva, Rancho Santa Margarita, CA (US);
Nicholas J. Silveri, Long Beach, CA (US);
Esther S. Zidovetzki, Venice, CA (US);
The Boeing Company, Arlington, VA (US);
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.