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:
Sep. 27, 1977
Filed:
Aug. 30, 1976
Applicant:
Inventors:
Gordon R New, Chatham, CA;
William G Curry, Chatham, CA;
Assignee:
Fram Corporation, East Providence, RI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D / ;
U.S. Cl.
CPC ...
4161 / ; 4162 / ; 416D / ;
Abstract
A fan blade, secured to an arm of the fan, extends radially outwardly beyond the arm and is secured to the arm by a plurality of rivets, a continuous circular rib being formed about the radially outermost rivet, the rib comprising on one side of the blade a groove having a depth and a cross-sectional radius equal to the blade material thickness.