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. 10, 2012
Filed:
May. 02, 2008
Applicants:
Kiyonori Koga, Chiyoda-ku, JP;
Shoji Yamada, Chiyoda-ku, JP;
Inventors:
Kiyonori Koga, Chiyoda-ku, JP;
Shoji Yamada, Chiyoda-ku, JP;
Assignee:
Mitsubishi Electric Corporation, Chiyoda-Ku, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D 5/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
The axial flow fan includes a plurality of blades disposed around and rotating together with the rotation shaft, the blades each including a leading edge, a trailing edge, a leading edge portion proximate the leading edge, a trailing edge portion proximate the trailing edge, a suction surface, a pressure surface, the suction surface having a curved shape; wherein the blade trailing edge portion has a constant thickness; and the trailing edge is formed in a semi-circle which is bi-sected by a mean camber line of the air foil.