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:
Dec. 11, 2007
Filed:
Feb. 10, 2005
Alex Horng, Kaohsiung, TW;
Yin-rong Hong, Kaohsiung, TW;
Alex Horng, Kaohsiung, TW;
Yin-Rong Hong, Kaohsiung, TW;
Sunonwealth Electric Machine Industry Co., Ltd., Kaohsiung, TW;
Abstract
An axial-flow heat-dissipating fan includes an impeller and a casing. The impeller includes a hub and a plurality of blades formed on the hub. The casing includes an air inlet, an air outlet, a base in the air outlet, and guiding ribs mounted between the casing and the base. Each guiding rib includes an airflow-encountering line adjacent to a trailing edge of one of the blades that is closest to the guiding rib. Two of the blades adjacent to each other overlap with each other as viewed from the longitudinal direction such that each blade has a first overlapped area and a second overlapped area, thereby increasing an air inlet amount and reducing blowing noise in the air inlet. An angle between the trailing edge of the blade and the airflow-encountering line of the guiding rib is 10°-70°, thereby reducing blowing noise in the air outlet.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile