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.

Date of Patent:
Jul. 12, 2016

Filed:

Jul. 16, 2013
Applicant:

Nidec Corporation, Kyoto, JP;

Inventors:

Takehito Tamaoka, Kyoto, JP;

Kazuhiko Fukushima, Kyoto, JP;

Kyoko Horise, Kyoto, JP;

Shinya Ishigami, Kyoto, JP;

Takahiro Nagai, Kyoto, JP;

Assignee:

NIDEC CORPORATION, Kyoto, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 25/06 (2006.01); F04D 29/42 (2006.01); F04D 17/16 (2006.01);
U.S. Cl.
CPC ...
F04D 29/4226 (2013.01); F04D 17/16 (2013.01); F04D 25/062 (2013.01); F04D 29/422 (2013.01); F04D 29/424 (2013.01); F04D 29/4213 (2013.01); F04D 25/0613 (2013.01);
Abstract

A lower plate includes a lower air inlet arranged radially outward of a bearing portion. In a plan view, a plane is divided into four regions by a first straight line which is parallel to an air outlet and crosses a central axis and a second straight line which is perpendicular to the air outlet and crosses the central axis, and one of the four regions in which a tongue portion is arranged is a first region, followed by a second region, a third region, and a fourth region in this order in a rotation direction of the blades. The air outlet is arranged to extend over both the first and fourth regions.


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