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. 10, 1984
Filed:
Sep. 25, 1981
Applicant:
Inventors:
John E Jackson, Brownsburg, IN (US);
William G Doherty, Lebanon, IN (US);
Assignee:
Union Carbide Corporation, Danbury, CT (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D / ;
U.S. Cl.
CPC ...
4152 / ; 4162 / ; 416224 ; 4162 / ;
Abstract
In a centrifugal fan having radially directed fan blades, each having, in combination, a serrated surface forming in longitudinal cross-section a sawtooth configuration in the radial direction of the rotating blade with a wear resistant coating over a substantial area of the serrated surface.