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:
Aug. 05, 2025
Filed:
Dec. 06, 2022
Applicant:
Nexfi Technology Inc., Suita, JP;
Inventors:
Satoshi Tanimoto, Suita, JP;
Takashi Nakamura, Suita, JP;
Assignee:
NexFi Technology Inc., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
H02K 7/02 (2006.01); F03G 3/08 (2006.01); F16F 15/30 (2006.01); H02J 15/00 (2006.01);
U.S. Cl.
CPC ...
H02K 7/025 (2013.01); F03G 3/08 (2013.01); F16F 15/30 (2013.01); H02J 15/007 (2020.01); Y02E 60/16 (2013.01);
Abstract
Provided are a hollow disk rotor for a flywheel energy storage system with a significantly improved circumferential velocity limit and stored energy limit, and a method for manufacturing the same. The rotor includes a plurality of circumferentially wound reinforcement fibers, a matrix material that fills gaps between the reinforcement fibers, and carbon nanotubes extending upward through the matrix material from surfaces of the reinforcement fibers as base points.