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Class Information
Number: 181/213
Name: Acoustics > Sound-modifying means > Muffler, fluid conducting type > Reaction engine type
Description: Subject matter comprising fluid conducting device which muffles or dampens noise emanating from a reaction type engine.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7621371 |
Method for attenuating the noise of a turbofan |
Nov. 24, 2009 |
| 7600384 |
Gas exhaust nozzle for a bypass turbomachine having an exhaust or throat section that can be varied by moving the secondary cowl |
Oct. 13, 2009 |
| 7578369 |
Mixed-flow exhaust silencer assembly |
Aug. 25, 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 |
| 7517380 |
Serviceable aligned exhaust aftertreatment assembly |
Apr. 14, 2009 |
| 7510052 |
Acoustic septum cap honeycomb |
Mar. 31, 2009 |
| 7503164 |
Ducted fan with containment structure |
Mar. 17, 2009 |
| 7503425 |
Integrated inlet attachment |
Mar. 17, 2009 |
| 7475550 |
Method and device for reducing engine noise |
Jan. 13, 2009 |
| 7461719 |
Resonator performance by local reduction of component thickness |
Dec. 9, 2008 |
| 7458221 |
Variable area nozzle including a plurality of convexly vanes with a crowned contour, in a vane to vane sealing arrangement and with nonuniform lengths |
Dec. 2, 2008 |
| 7418813 |
Gas turbine engine exhaust nozzle including an infrared suppression system having a plurality of U-shaped blocking fins and method of assembling said exhaut nozzle |
Sep. 2, 2008 |
| 7413053 |
Acoustic resonator with impingement cooling tubes |
Aug. 19, 2008 |
| 7392651 |
Turbomachine nozzle cover for reducing jet noise |
Jul. 1, 2008 |
| 7384609 |
Pre-converter device for cleaning exhaust gas for an internal combustion engine |
Jun. 10, 2008 |
| 7337875 |
High admittance acoustic liner |
Mar. 4, 2008 |
| 7334408 |
Combustion chamber for a gas turbine with at least two resonator devices |
Feb. 26, 2008 |
| 7331182 |
Combustion chamber for a gas turbine |
Feb. 19, 2008 |
| 7328771 |
Zero acoustic splice fan case liner |
Feb. 12, 2008 |
| 7322195 |
Acoustic dampers |
Jan. 29, 2008 |
| 7293401 |
Jet engine noise suppressor |
Nov. 13, 2007 |
| 7246481 |
Methods and apparatus for operating gas turbine engines |
Jul. 24, 2007 |
| 7114323 |
Jet exhaust noise reduction system and method |
Oct. 3, 2006 |
| 7080514 |
High frequency dynamics resonator assembly |
Jul. 25, 2006 |
| 6973790 |
Gas turbine combustor, gas turbine, and jet engine |
Dec. 13, 2005 |
| 6966172 |
Gas turbine exhaust passage and damper system for same |
Nov. 22, 2005 |
| 6938727 |
Integrated engine compartment component and air intake system |
Sep. 6, 2005 |
| 6935098 |
Turbomachine nozzle with noise reduction |
Aug. 30, 2005 |
| 6920958 |
Annular acoustic panel |
Jul. 26, 2005 |
| 6896099 |
Aircraft engine pod with acoustic attenuation |
May. 24, 2005 |
| 6896100 |
Noise reducing apparatus and exhaust nozzle for jet engine |
May. 24, 2005 |
| 6854260 |
Jet nozzle mixer |
Feb. 15, 2005 |
| 6845607 |
Variable area plug nozzle |
Jan. 25, 2005 |
| 6826901 |
Convergent/divergent segmented exhaust nozzle |
Dec. 7, 2004 |
| 6786038 |
Duplex mixer exhaust nozzle |
Sep. 7, 2004 |
| 6761245 |
Tubular acoustic attenuation piece for an aircraft jet engine air intake |
Jul. 13, 2004 |
| 6668540 |
Gas turbine exhaust passage and damper system for same |
Dec. 30, 2003 |
| 6658839 |
Convergent/divergent segmented exhaust nozzle |
Dec. 9, 2003 |
| 6640544 |
Gas turbine combustor, gas turbine, and jet engine |
Nov. 4, 2003 |
| 6615576 |
Tortuous path quiet exhaust eductor system |
Sep. 9, 2003 |
| 6606854 |
Exhaust mixer and apparatus using same |
Aug. 19, 2003 |
| 6601672 |
Double layer acoustic liner and a fluid pressurizing device and method utilizing same |
Aug. 5, 2003 |
| 6571549 |
Jet noise suppressor |
Jun. 3, 2003 |
| 6550574 |
Acoustic liner and a fluid pressurizing device and method utilizing same |
Apr. 22, 2003 |
| 6539702 |
Gas turbine exhaust passage and damper system for same having a non-enclosed porous peripheral wall |
Apr. 1, 2003 |
| 6531091 |
Muffler made of a titanium alloy |
Mar. 11, 2003 |
| 6530221 |
Modular resonators for suppressing combustion instabilities in gas turbine power plants |
Mar. 11, 2003 |
| 6505706 |
Exhaust flow guide for jet noise reduction |
Jan. 14, 2003 |
| 6502383 |
Stub airfoil exhaust nozzle |
Jan. 7, 2003 |
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