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:
Jan. 01, 2013
Filed:
Dec. 18, 2007
Ching-bai Hwang, Taipei Hsien, TW;
Zhi-hui Zhao, Shenzhen, CN;
Wen-jie Zhang, Shenzhen, CN;
Fu Zhun Precision Industry (Shen Zhen) Co., Ltd, Shenzhen, CN;
Foxconn Technology Co., Ltd., New Taipei, TW;
Abstract
A centrifugal fan includes a fan frame (), and a stator () and a rotor () received in the fan frame. The fan frame includes a bottom base (), an opposite top cover () and a side wall () interconnecting the bottom base and the top cover. A first air inlet () is defined in the top cover and a second air inlet () is defined in the bottom base. The rotor includes a hub () and a plurality of blades () extending from an outer periphery of the hub. An air flow channel () is formed between an outer periphery of the blades and the side wall of the fan frame. A cylindrical wall () is formed around one of the first air inlet and the second air inlet to guide airflow from the first and second air inlets into the air flow channel and block the airflow in the air flow channel from flowing back towards the first and second air inlets.