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. 16, 2007
Filed:
Dec. 10, 2003
Applicant:
Steven W. Kegg, Uniontown, OH (US);
Inventor:
Steven W. Kegg, Uniontown, OH (US);
Assignee:
The Hoover Company, North Canton, OH (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 29/44 (2006.01); F04D 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A floor care appliance is provided with a motor-fan assembly that includes a diffuser to improve efficiency but also reduces any resultant noise generated. The diffuser is disc shaped and has a plurality of equi-distant spaced vanes around the periphery. The vanes improve performance by converting air velocity into static pressure rise. The vanes also reduce noise by making the flow more uniform. A periphery of radially extending return vanes are arranged circumferentially on one side of the disc. The return vanes remove swirl and improve performance before directing the air through the interior of the motor for cooling.