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. 31, 1993
Filed:
May. 03, 1991
Applicant:
Inventors:
Yoshiyuki Mita, Shizuoka, JP;
Yuichi Ono, Numazu, JP;
Assignee:
Usui Kokusai Sangyo Kaisha Ltd., Shizuoka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D / ; F04D / ;
U.S. Cl.
CPC ...
4152112 ; 123 4149 ;
Abstract
An axial-flow fan to be attached to an output shaft of an internal combustion engine is provided with a circular resistance plate disposed between the fan and the engine housing. The resistance plate extends perpendicularly to a fan driving output shaft of the engine, while surrounding the output shaft. Air flow flowing against the resistance plate is deflected in the radial directions, deviating from the output shaft. This air flow turns back toward the upstream side of the fan, turbulent flow is effectively minimized, and the absorption power of the fan is remarkably reduced.