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:
Jun. 09, 2015
Filed:
Dec. 26, 2012
Applicant:
Daikin Industries, Ltd., Osaka-shi, Osaka, JP;
Inventors:
Azumi Kojima, Sakai, JP;
Yuuta Yokoyama, Kyoto, JP;
Assignee:
Daikin Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 19/00 (2006.01); F04D 29/38 (2006.01);
U.S. Cl.
CPC ...
F04D 29/384 (2013.01); F04D 19/002 (2013.01);
Abstract
An axial-flow fan has a blade with a recessed part that is recessed toward a front edge formed in a rear edge of the blade. A rounded stress-relieving part is formed in a positive pressure surface side and a negative pressure surface side of a front-edge-side edge part of the recessed part as seen in a cross-sectional view of the blade.