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:
Dec. 30, 2025
Filed:
Oct. 26, 2022
Applicant:
Carrier Japan Corporation, Tokyo, JP;
Inventors:
Yuki Furutani, Hiratsuka, JP;
Yoshihiro Komiyama, Fuji, JP;
Assignee:
Carrier Japan Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 29/52 (2006.01); F04D 19/00 (2006.01);
U.S. Cl.
CPC ...
F04D 29/522 (2013.01); F04D 19/002 (2013.01);
Abstract
A fan of which the blowing efficiency can be increased, the fan including a blade and a bell mouth. The blade rotates around a rotation axis that is along a first direction. The bell mouth includes a staircase structure positioned around the blade along a first plane perpendicular to the first direction. The staircase structure surrounds an opening that spreads toward a blowing direction of the blade.