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:
Sep. 22, 2020
Filed:
Oct. 24, 2017
Applicant:
Nidec Corporation, Kyoto, JP;
Inventors:
Ryosuke Ishida, Kyoto, JP;
Jun Nagasawa, Kyoto, JP;
Assignee:
NIDEC CORPORATION, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/52 (2006.01); F04D 29/54 (2006.01); F04D 19/00 (2006.01); F04D 25/08 (2006.01);
U.S. Cl.
CPC ...
F04D 29/522 (2013.01); F04D 19/002 (2013.01); F04D 25/08 (2013.01); F04D 29/526 (2013.01); F04D 29/545 (2013.01);
Abstract
An axial fan includes an impeller, a motor, and a housing. The impeller is configured to rotate about a rotation axis extending in a vertical direction; a motor configured to rotationally drive the impeller. The housing is disposed radially outside the impeller and the motor. An inner wall surface of the housing includes a groove recessed radially outward and extending in the vertical direction. At least a first end of the groove in the vertical direction extends to one end of the housing in the vertical direction.