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:
Mar. 26, 2002
Filed:
Apr. 20, 2001
Applicant:
Inventors:
Satish Narayanan, Ellington, CT (US);
Bernd R. Noack, Berlin, DE;
Andrzej Banaszuk, Manchester, CT (US);
Alexander I. Khibnik, Glastonbury, CT (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15C 1/04 ;
U.S. Cl.
CPC ...
F15C 1/04 ;
Abstract
A diffuser ( ) has a step ( ) in the surface ( ) just upstream of a point where boundary layer separation might occur. An acoustic jet ( ) has a nozzle ( ) immediately downstream of the step ( ); the acoustic jet is driven ( ) by a plurality of frequencies, one or more of which are subharmonics of another of them, and having different phases.