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. 05, 2011
Filed:
Feb. 07, 2007
Applicants:
Chen-mo Jiang, Taoyuan Hsien, TW;
Chung-kai Lan, Taoyuan Hsien, TW;
Hung-chi Chen, Taoyuan Hsien, TW;
Inventors:
Chen-Mo Jiang, Taoyuan Hsien, TW;
Chung-Kai Lan, Taoyuan Hsien, TW;
Hung-Chi Chen, Taoyuan Hsien, TW;
Assignee:
Delta Electronics, Inc., Taoyuan Hsien, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 29/24 (2006.01); F01D 5/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
An impeller includes a hub, a plurality of first blades, and a plurality of second blades. The first blades are disposed around the hub. The second blades are disposed between the first blades. The lengths of the second blades are shorter than those of the first blades. The impeller can avoid the airflow reflux and have good airflow efficiency.