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:
Feb. 28, 1995
Filed:
Jul. 22, 1992
Applicant:
Inventor:
Ahmad Alizadeh, Indianapolis, IN (US);
Assignee:
Valeo Thermique Moteur, Le Mesnil-Saint Denis, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D / ;
U.S. Cl.
CPC ...
416189 ; 4161 / ; 416D / ;
Abstract
A fan comprises a hub rotatable about a central axis and a plurality of blades each having a root region secured to the hub and extending radially outwardly to a tip region. Each blade is designed with particular characteristics to reduce noise without affecting the performance of the fan.