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. 30, 2001
Filed:
Nov. 12, 1999
Applicant:
Inventors:
Haran K. Periyathamby, Toronto, CA;
Marek Horski, London, CA;
Assignee:
Siemens Automotive Inc., Mississauga, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 5/10 ; F01D 5/16 ;
U.S. Cl.
CPC ...
F01D 5/10 ; F01D 5/16 ;
Abstract
A cooling structure,for cooling an engine includes an axial flow fan,having a plurality of blades,. A shroud,is spaced from and is generally adjacent to the blades,. A plurality of Helmholtz resonators,and,is carried by the shroud,. Each of the resonators,and,has an opening disposed substantially perpendicular with respect to a direction of air flow resulting from rotation of the fan,. The resonators,and,are disposed at locations on the shroud,which are generally adjacent to tips,of the blades,. The resonators,and,are tuned to reduce blade passing tone of the fan