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. 05, 1992
Filed:
Aug. 02, 1990
Applicant:
Inventors:
Ken Morinushi, Amagasaki, JP;
Hideharu Tanaka, Amagasaki, JP;
Yoshihiro Noguchi, Hanazono, JP;
Toshihisa Imai, Hanazono, JP;
Yutaka Takahashi, Hanazono, JP;
Assignees:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Mitsubishi Electric Home Appliance Co., Ltd., Saitama, JP;
Primary Examiner:
Int. Cl.
CPC ...
F01D / ;
U.S. Cl.
CPC ...
415119 ; 181224 ; 181225 ;
Abstract
A blower comprises an impeller which can function to raise the pressure of a fluid and delivers it; a driving device for driving the impeller; and a fan casing which includes a fluid path to inspire the fluid from the outside and deliver it to the outside through the impeller; wherein the fan casing is at least partly formed by a hard porous structural unit whose specific gravity is continuously changed in at least one of the direction of thickness and a direction of surface.