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:
Jan. 26, 1999
Filed:
Jun. 09, 1997
Applicant:
Inventors:
D Lee Hill, Olathe, KS (US);
Jimmy D Vanfossan, Gladstone, MO (US);
Hamid Massali, Leawood, KS (US);
Assignee:
Emerson Electric Co., St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D / ;
U.S. Cl.
CPC ...
416237 ; 416 62 ; 4162 / ;
Abstract
An attachment for improving the efficiency of a fluid circulation device such as a fan comprises a back connector portion for connecting to a fan blade and a lobe which protrudes from a leading edge of the fan blade. An impeller has a plurality of fan blades extending from a central hub, and the impeller is rotated by an electrical motor. The impeller is housed within a fan guard. As the impeller is rotated, the lobes operate to pick up air passing around the preceding blade and continue accelerating the air to increase efficiency and flow.