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. 25, 2012
Filed:
Mar. 03, 2008
Applicants:
John Decker, Cypress, TX (US);
Chellappa Balan, Niskayuna, NY (US);
Inventors:
John Decker, Cypress, TX (US);
Chellappa Balan, Niskayuna, NY (US);
Assignee:
Xcelaero Corporation, San Luis Obispo, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 29/44 (2006.01); F04D 29/54 (2006.01); F03B 1/00 (2006.01); F03D 5/00 (2006.01); B63H 1/26 (2006.01); B64C 11/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A cooling fan includes an impeller which comprises a plurality of radially extending blades, each of which includes a blade hub, a blade tip and a blade midspan approximately midway between the hub and the tip. In addition, each blade includes a camber of between about 60° and 90° at the blade hub, between about 15° and 40° at the blade midspan and between about 15° and 40° at the blade tip.