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:
Jul. 19, 2016
Filed:
May. 13, 2010
Applicants:
Seiji Nakashima, Chiyoda-ku, JP;
Koji Kise, Chiyoda-ku, JP;
Hirofumi Horiuchi, Chiyoda-ku, JP;
Inventors:
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 19/00 (2006.01); F04D 29/38 (2006.01);
U.S. Cl.
CPC ...
F04D 19/002 (2013.01); F04D 29/384 (2013.01); F05D 2240/307 (2013.01);
Abstract
An axial flow fan, with which effective work of blades is ensured and blade tip vortices are suppressed, thereby reducing noise. The axial flow fan includes blades, which are each formed such that a chord centerline connecting chord center points from inner to outer peripheral ends of the blade is curved so as to protrude toward a downstream side in a whole region.