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:
Oct. 01, 1991
Filed:
Jan. 29, 1990
Julian B Fasano, Englewood, OH (US);
Chemineer, Inc., Dayton, OH (US);
Abstract
A high efficiency impeller has blades which are formed of plate material. Each blade has a first span-wise bend which extends generally parallel to the trailing edge and through about the center of the blade measured cord-wise and extending the length of the blade from the root end to the tip end. The first bend divides the blade into a back portion and a front portion. The front portion is further divided by a second bend line which extends from the intersection of the first bend line with the tip of the blade diagonally to the leading edge of the blade at a point about one-fifth to one-third the span-wise length outwardly from the blade root. The material of the blade is bent about each of the bend lines, in the same direction, to provide camber and concavity for the blade. The leading and trailing edges of the blade are chamfered.