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:
May. 01, 2012
Filed:
Jun. 27, 2008
Applicants:
Masaharu Sakai, Obu, JP;
Yoshiki Kondo, Nishio, JP;
Toshinori Ochiai, Obu, JP;
Tomonori Akatsuka, Nishio, JP;
Inventors:
Masaharu Sakai, Obu, JP;
Yoshiki Kondo, Nishio, JP;
Toshinori Ochiai, Obu, JP;
Tomonori Akatsuka, Nishio, JP;
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F03B 3/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A centrifugal fan includes a plurality of blades, a first wall disposed at first axial ends of the blades, and a second wall disposed at second axial ends of the blades and having a shaft portion at a center. At least one of the first wall and the second wall has a cutout portion configured to control balance.