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:
Jun. 30, 2020
Filed:
Jan. 12, 2018
Applicant:
Nidec Corporation, Kyoto, JP;
Inventors:
Shogo Hakozaki, Kyoto, JP;
Ryota Yamagata, Kyoto, JP;
Assignee:
NIDEC CORPORATION, Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 29/38 (2006.01); F04D 19/00 (2006.01); F04D 29/66 (2006.01); F04D 29/68 (2006.01); F04D 29/16 (2006.01); F04D 29/64 (2006.01); F04D 29/52 (2006.01); F04D 29/18 (2006.01);
U.S. Cl.
CPC ...
F04D 29/384 (2013.01); F04D 19/002 (2013.01); F04D 19/007 (2013.01); F04D 29/164 (2013.01); F04D 29/646 (2013.01); F04D 29/666 (2013.01); F04D 29/681 (2013.01); F04D 29/181 (2013.01); F04D 29/52 (2013.01);
Abstract
A serial axial flow fan in which an end portion of a first axial flow fan on an exhaust side, and an end portion of a second axial flow fan on an intake side are connected to each other. At least either of a plurality of first blades of a first impeller of the first axial flow fan, and a plurality of second blades of a second impeller of the second axial flow fan are provided with auxiliary blade portions.