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:
Oct. 29, 1996
Filed:
Aug. 11, 1994
Applicant:
Inventors:
Fumiaki Ishida, Narashino, JP;
Masayuki Fujio, Sakura, JP;
Kazuo Kobayashi, Chiba, JP;
Kengo Hasegawa, Sakura, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417326 ; 4174231 ; 41742312 ; 41742315 ; 415 551 ;
Abstract
A vortex blower includes an induction motor and a blower portion driven by the motor. The blower portion includes an impeller and a casing. The impeller is so mounted on a rotary output shaft of the induction motor that the impeller is disposed near the induction motor. The casing is so disposed that the impeller is interposed between the induction motor and the casing. An inlet port and an outlet port are provided on an end of the casing opposite to the induction motor. The blower portion has approximately the same diameter as that of the induction motor.