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:
May. 08, 2012
Filed:
Nov. 07, 2007
Applicants:
Hideaki Uchise, Kyoto, JP;
Hidenobu Takeshita, Kyoto, JP;
Inventors:
Hideaki Uchise, Kyoto, JP;
Hidenobu Takeshita, Kyoto, JP;
Assignee:
Nidec Corporation, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/54 (2006.01);
U.S. Cl.
CPC ...
Abstract
A fan includes an impeller rotatable about a rotation axis and having a plurality of rotating vanes, and a plurality of stationary vanes connecting an outer casing to a supporting body which supports a motor rotating the impeller. At least in a portion of each stationary vane in a radial direction, an axial distance between that stationary vane and one of the rotating vanes closest thereto and a slant angle of that stationary vane with respect to an axial direction increase as that stationary vane moves outwardly in the radial direction.