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:
Jun. 20, 2000
Filed:
Dec. 19, 1996
D Lee Hill, Olathe, KS (US);
Jimmy D Vanfossan, Gladstone, MO (US);
Hamid Massali, Leawood, KS (US);
Emerson Electric Co., St. Louis, MO (US);
Abstract
An impeller for a fan, with improved performance characteristics, has a central hub with a plurality of wings extending radially outwardly therefrom. The impeller also has a plurality of blades, such that each blade is attached in an extending manner from a corresponding one of the wings. When in combination with a fan having a motor, the motor imparts rotation to the impeller in a forward direction. Each blade is angled backwardly, at a selected angle, relative to its corresponding wing and the forward, rotational direction of the impeller. In an alternate embodiment, each wing of the hub has a first portion extending radially outward from the hub and a second, outer portion angled backwardly relative to the first portion of the wing and the forward direction of the impeller. A method of manufacture is provided.