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:
Aug. 30, 2011
Filed:
Dec. 14, 2007
Ching-bai Hwang, Taipei Hsien, TW;
Zhi-hui Zhao, Shenzhen, CN;
Jie Zhang, Shenzhen, CN;
Fu Zhun Precision Industry (Shen Zhen) Co., Ltd., Shenzhen, Guangdong Province, CN;
Foxconn Technology Co., Ltd., Tu-Cheng, New Taipei, TW;
Abstract
A centrifugal fan includes a fan frame () and an impeller () received in the fan frame. The impeller includes a hub () having a circular top wall () and a cylindrical side wall () extending downwardly from a rim of the circular top wall, a plurality of blades () extending radially from the side wall of the hub and a blade ring (). The blade ring includes an annular top plate (), a cylindrical sidewall () extending downwardly from an outer periphery of the top plate, and a flange () extending outwardly from a bottom of the cylindrical sidewall. The blade ring is arranged on top surfaces of the blades received in an air inlet () defined in a top surface of the fan frame, and the top plate of the blade ring and the top surface of the fan frame are coplanar with each other.