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Class Information
Number: 181/214
Name: Acoustics > Sound-modifying means > Muffler, fluid conducting type > Reaction engine type > Upstream (e.g., intake silencer)
Description: Subject matter wherein the attenuating device is at the air intake side of the engine shroud.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7621370 |
Sound increase apparatus |
Nov. 24, 2009 |
| 7552796 |
Turbine engine tailcone resonator |
Jun. 30, 2009 |
| 7549506 |
Method of suppressing combustion instabilities using a resonator adopting counter-bored holes |
Jun. 23, 2009 |
| 7516815 |
Arrangement for the generation of sonic fields of a specific modal composition |
Apr. 14, 2009 |
| 7503425 |
Integrated inlet attachment |
Mar. 17, 2009 |
| 7461719 |
Resonator performance by local reduction of component thickness |
Dec. 9, 2008 |
| 7431126 |
Support means for an acoustic liner used in an auxiliary power unit exhaust muffler |
Oct. 7, 2008 |
| 7431125 |
Composite muffler for use with airborne auxiliary power unit |
Oct. 7, 2008 |
| 7401682 |
Architecture for an acoustic liner |
Jul. 22, 2008 |
| 7350619 |
Auxiliary power unit exhaust duct with muffler incorporating an externally replaceable acoustic liner |
Apr. 1, 2008 |
| 7337875 |
High admittance acoustic liner |
Mar. 4, 2008 |
| 7331421 |
Flow restrictors for aircraft inlet acoustic treatments, and associated systems and methods |
Feb. 19, 2008 |
| 7328771 |
Zero acoustic splice fan case liner |
Feb. 12, 2008 |
| 7311175 |
Acoustic liner with bypass cooling |
Dec. 25, 2007 |
| 7296655 |
Duct liner acoustic splice |
Nov. 20, 2007 |
| 7296656 |
Acoustic mechanical retainer |
Nov. 20, 2007 |
| 7104749 |
Intake silencer for gas turbines |
Sep. 12, 2006 |
| 7104750 |
Fogging device for gas turbines |
Sep. 12, 2006 |
| 7055484 |
Multiple frequency Helmholtz resonator |
Jun. 6, 2006 |
| 7047725 |
Assembly and method for aircraft engine noise reduction |
May. 23, 2006 |
| 6920958 |
Annular acoustic panel |
Jul. 26, 2005 |
| 6896099 |
Aircraft engine pod with acoustic attenuation |
May. 24, 2005 |
| 6772857 |
Acoustically resistive layer for an acoustical attenuation panel, panel using such a layer |
Aug. 10, 2004 |
| 6766639 |
Acoustic-structural LPC splitter |
Jul. 27, 2004 |
| 6761245 |
Tubular acoustic attenuation piece for an aircraft jet engine air intake |
Jul. 13, 2004 |
| 6758304 |
Tuned Helmholtz resonator using cavity forcing |
Jul. 6, 2004 |
| 6659221 |
Engine intake silencer |
Dec. 9, 2003 |
| 6644436 |
Device for noise configuration in a motor vehicle |
Nov. 11, 2003 |
| 6641374 |
Cylinder head cover structure of hermetic motor-driving type compressor |
Nov. 4, 2003 |
| 6553953 |
Suction duct |
Apr. 29, 2003 |
| 6520284 |
Air intake device comprising a duct section provided with openings |
Feb. 18, 2003 |
| 6494290 |
Noise suppressor with a bypass resonator |
Dec. 17, 2002 |
| 6321870 |
Air intake means with water separator |
Nov. 27, 2001 |
| 6248423 |
Acoustical and structural microporous sheet |
Jun. 19, 2001 |
| 6216443 |
Gas turbine, combined cycle plant and compressor |
Apr. 17, 2001 |
| 6193011 |
Fan inlet flow controller |
Feb. 27, 2001 |
| 6123170 |
Noise reducing connection assembly for aircraft turbine housings |
Sep. 26, 2000 |
| 5979595 |
Fan inlet flow controller |
Nov. 9, 1999 |
| 5952621 |
Sound attenuation system and related method |
Sep. 14, 1999 |
| 5934611 |
Low drag inlet design using injected duct flow |
Aug. 10, 1999 |
| 5923003 |
Extended reaction acoustic liner for jet engines and the like |
Jul. 13, 1999 |
| 5915403 |
Biplanar scarfed nacelle inlet |
Jun. 29, 1999 |
| 5841079 |
Combined acoustic and anti-ice engine inlet liner |
Nov. 24, 1998 |
| 5809770 |
Silencer for a gas flow |
Sep. 22, 1998 |
| 5768778 |
One-piece engine inlet acoustic barrel |
Jun. 23, 1998 |
| 5743488 |
Aerodynamic low drag structure |
Apr. 28, 1998 |
| 5730946 |
Combined catalytic converter and muffler |
Mar. 24, 1998 |
| 5721402 |
Noise suppression system for a jet engine |
Feb. 24, 1998 |
| 5709529 |
Optimization of turbomachinery harmonics |
Jan. 20, 1998 |
| 5649419 |
Rotating acoustically lined inlet splitter for a turbo-fan engine |
Jul. 22, 1997 |
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