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SPACE PATENTS BY
Aerospace Assignees
Aerospace Inventors
Time Lines

Acoustic apparatus

Invented by: Graeme Clive Hunt
Nottingham, GB

Zahid Muhammed Hussain
Derby, GB

Brian Alex Handley
Derby, GB

Originally Assigned to: Rolls-Royce PLC
London, GB
[Now assigned to . . .]

Issued:2010-06-08
Filed:2007-10-22
Application No:11876001
Examined by:Donels; Jeffrey

Acoustic noise from relatively high pressure gas flows as a result of opening for example a bypass valve in a gas turbine engine can cause problems. By provision of an acoustic apparatus incorporating an inner chamber where there is a pressure reduction and then a chamber divider surface incorporating small apertures with a wide spacing distribution an upward shift in acoustic frequency of the gas flow is achieved beyond normal human comprehension. An outer chamber is provided to receive the fine gas flow jets from the apertures in the chamber divider surface for further pressure reduction and low pressure release through wider apertures in an exit surface.

[pdf] U.S. Pat. No. 7,730,995

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This information is part of a study by Oasis Global, Inc. of all space inventions filed at the United States Patent and Trademark Office, and is provided for informational purposes only. It is not an endorsement of any particular assignee, inventor or invention. Although Peter A. Koziol represents inventors and assignees of space inventions he does not represent all of the inventors and assignees listed. The prosecuting attorney agent or firm for each patent is identified by the United States Patent and Trademark Office in the patent specfication, which can be viewed by clicking on the patent image or downloading the patent document. For more information regarding Mr. Koziol's background and experience, or to learn more about space inventions, please contact Mr. Koziol.

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