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:
Jul. 01, 2025
Filed:
Jun. 18, 2024
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventors:
Assignee:
HITACHI, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B64D 35/021 (2024.01); B64C 11/18 (2006.01); B64C 27/467 (2006.01); B64C 29/02 (2006.01); B64D 27/31 (2024.01); B64D 27/32 (2024.01); B64D 33/08 (2006.01); B64U 20/94 (2023.01); B64U 50/19 (2023.01); F04D 25/08 (2006.01); F04D 29/38 (2006.01); F04D 29/58 (2006.01); H02K 9/06 (2006.01);
U.S. Cl.
CPC ...
B64D 35/021 (2024.01); B64C 11/18 (2013.01); B64C 27/467 (2013.01); B64D 33/08 (2013.01); B64U 20/94 (2023.01); F04D 25/082 (2013.01); F04D 29/384 (2013.01); F04D 29/386 (2013.01); F04D 29/5806 (2013.01); F04D 29/5846 (2013.01); H02K 9/06 (2013.01); B64C 29/02 (2013.01); B64D 27/31 (2024.01); B64D 27/32 (2024.01); B64U 50/19 (2023.01);
Abstract
Provided is an electric propulsion deviceincluding a propellerand a motorfor rotating the propeller, wherein the propeller includes a rotary bosssecured to a rotating shaftof the motor, and bladesprotruding radially outward from the rotary boss. Further, the blades include a base end portion with an airfoil continuously changing such that a trailing edge comes to be in parallel to the rotating shaft of the motor from a radially outer side to the rotary boss, in a vicinity of the rotary boss.