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:
Apr. 10, 2012
Filed:
Apr. 03, 2009
Applicants:
Ching-bai Hwang, Tu-Cheng, TW;
Zhi-hui Zhao, Shenzhen, CN;
Ran Lin, Shenzhen, CN;
Inventors:
Assignees:
Furui Precise Component (Kunshan) Co., Ltd., KunShan, Jiangsu Province, CN;
Foxconn Technology Co., Ltd., Tu-Cheng, New Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B63H 1/26 (2006.01); B63H 7/02 (2006.01); B64C 11/24 (2006.01); B64C 27/46 (2006.01);
U.S. Cl.
CPC ...
Abstract
An impeller of a centrifugal fan includes a hub and a plurality of blades arranged on and around the hub. Each of the blades includes a root portion and a tip portion. The tip portion of each of the blades has a concave surface and a convex surface in rear and front sides thereof respectively. In a rotational direction of the impeller, the tip portion of a rear blade protrudes towards a front blade.