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. 18, 2011
Filed:
Nov. 05, 2007
Applicants:
Jiro Watanabe, Nagano, JP;
Toshiya Nishizawa, Nagano, JP;
Yasuhiro Maruyama, Nagano, JP;
Inventors:
Assignee:
Sanyo Denki Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 9/06 (2006.01); F04D 25/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A counter-rotating axial-flow fan is provided that is capable of increasing effect of cooling a stator. One or more through-holespenetrating support frame bodies () in the axial direction are formed in support frame bodiesand. One or more vent holesfor introducing air, sucked from a suction port, into a cup-like memberare formed in a bottom wall portionof a cup-like memberof a first impeller. One or more vent holesfor discharging air, introduced into an internal space of a second motor, to the outside are formed in a bottom wall portionof a cup-like memberof a second impeller