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:
Aug. 14, 2012
Filed:
Dec. 07, 2007
Applicants:
Seiji Shirahama, Aichi, JP;
Hitoshi Yoshikawa, Gifu, JP;
Inventors:
Seiji Shirahama, Aichi, JP;
Hitoshi Yoshikawa, Gifu, JP;
Assignee:
Panasonic Corporation, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
Centrifugal impeller () of centrifugal air blower () has main plate (); a plurality of blades (); ring-shaped plate (); and a cylindrical wall (). The blades () are circumferentially disposed on the side of the outer periphery of front side () of main plate (). Ring-shaped plate () is attached to tip sections () of blades (). Cylindrical wall () is disposed on the back side () of the main plate () so as to be concentric therewith. The structure above provides centrifugal impeller () and centrifugal air blower () with improved air-blow efficiency and noise-reduced operations.