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:
Feb. 24, 2015
Filed:
Apr. 21, 2011
Applicants:
Takako Fukuda, Nagano, JP;
Masaki Ogushi, Nagano, JP;
Yoichi Kawai, Tokyo, JP;
Naoya Ohki, Tokyo, JP;
Inventors:
Takako Fukuda, Nagano, JP;
Masaki Ogushi, Nagano, JP;
Yoichi Kawai, Tokyo, JP;
Naoya Ohki, Tokyo, JP;
Assignee:
Minebea Co., Ltd., Nagano, JP;
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/38 (2006.01); F04D 29/54 (2006.01);
U.S. Cl.
CPC ...
F04D 29/384 (2013.01); Y10S 416/02 (2013.01);
Abstract
An axial fan is provided. The axial fan includes a hub, an impeller having a plurality of blades mounted on an outer peripheral surface of the hub, and a housing surrounding the impeller. Each of the blades has a front edge angle (α) within a range of −8° to −20°, a mounting angle (β) within a range of 36° to 50°, and a twisted angle (θ) within a range of 10°±2°.