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:
Jul. 28, 1981
Filed:
May. 08, 1979
Waman V Bhat, Redmond, WA (US);
The Boeing Company, Seattle, WA (US);
Abstract
A discharge nozzle of a jet engine has lobes, tubes or deflectors for promoting mixing of the engine discharge flow with ambient air to reduce jet noise. By providing the lobes, tubes or deflectors at only the upper portion of the discharge nozzle, jet noise perceived below the engine is reduced substantially without shifting the noise spectrum to include a higher proportion of piercing and irritating high frequency noise components. Additionally, in a turbofan, the fan or secondary flow is discharged below the primary exhaust flow to further reduce noise perceived below the turbofan.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile