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:
Aug. 12, 2022
Applicant:
Fujifilm Corporation, Tokyo, JP;
Inventors:
Shinya Hakuta, Ashigarakami-gun, JP;
Shogo Yamazoe, Ashigarakami-gun, JP;
Yoshihiro Sugawara, Ashigarakami-gun, JP;
Akihiko Ohtsu, Ashigarakami-gun, JP;
Assignee:
FUJIFILM Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/66 (2006.01); B64C 39/02 (2023.01); F04D 19/00 (2006.01); F04D 29/54 (2006.01); B64U 30/20 (2023.01);
U.S. Cl.
CPC ...
F04D 29/665 (2013.01); B64C 39/024 (2013.01); F04D 19/002 (2013.01); F04D 29/542 (2013.01); B64U 30/20 (2023.01);
Abstract
A fan, and a silencer that silences a sound generated by the fan are provided, in which the silencer has a resonance characteristic, the silencer is disposed at a position connected to a sound field space of the sound generated by the fan, and a sum of an absorbance and a reflectivity of the silencer at a resonance frequency is 10% to 43% and a standardized half-width of the silencer is more than 0.05 and 0.25 or less.