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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:
1 2 3

Patent Number Title Of Patent Date Issued
8684130 Damping system for combustor Apr. 1, 2014
8684301 Wave attenuation panel inserted between the motor and air inlet of an aircraft nacelle Apr. 1, 2014
8685302 Monolithic acoustically-treated composite structures and methods for fabricating the same Apr. 1, 2014
8650853 Noise reduction assembly for aircraft turbojet Feb. 18, 2014
8646723 Device for connecting an air inlet with an aircraft nacelle actuator assembly Feb. 11, 2014
8602156 Multi-splice acoustic liner Dec. 10, 2013
8584795 Filter silencer Nov. 19, 2013
8579074 Intake silencer for gas turbine Nov. 12, 2013
8579078 Acoustic panel for a turbojet engine nacelle, with in-built fasteners Nov. 12, 2013
8578697 Fan section Nov. 12, 2013
8550057 Integral rotor noise attenuators Oct. 8, 2013
8550208 High pressure muffling devices Oct. 8, 2013
8544598 Soundproofing panel for turbomachine and turbomachine comprising such a panel Oct. 1, 2013
8539748 Segmented inertial particle separators and methods of assembling turbine engines Sep. 24, 2013
8528318 Cambered aero-engine inlet Sep. 10, 2013
8505679 Panel for the acoustic treatment with a progressive thickness Aug. 13, 2013
8430202 Compact high-pressure exhaust muffling devices Apr. 30, 2013
8413922 Acoustic processing structure particularly adapted to the air inlet of an aircraft nacelle Apr. 9, 2013
8261530 Cambered aero-engine inlet Sep. 11, 2012
8240429 System method and devices for windage noise damping in induction motor Aug. 14, 2012
8196704 Linear acoustic liner Jun. 12, 2012
8177022 Transmitted sound control apparatus May. 15, 2012
8172037 Coating for acoustic treatment that integrates the function of hot-air treatment of frost May. 8, 2012
8146707 Air conditioner Apr. 3, 2012
8127886 Noise suppressor, electronic apparatus, and noise suppression characteristic control method Mar. 6, 2012
8066096 Inlet silencer Nov. 29, 2011
8047326 Method for making an acoustic absorption panel in particular for the nacelle of an aircraft engine Nov. 1, 2011
8033358 Noise controlled turbine engine with aircraft engine adaptive noise control tubes Oct. 11, 2011
8028797 System for joining acoustic cellular panel sections in edge-to-edge relation Oct. 4, 2011
8028802 Method and system for damped acoustic panels Oct. 4, 2011
8025122 Acoustically treated exhaust centerbody for jet engines and associated methods Sep. 27, 2011
7967105 Aero-acoustic aviation engine inlet for aggressive noise abatement Jun. 28, 2011
7967106 Air induction sound modification system for internal combustion engine Jun. 28, 2011
7967108 Acoustic liners Jun. 28, 2011
7963362 Acoustic panel having a variable acoustic characteristic Jun. 21, 2011
7942234 Noise suppressor, electronic apparatus, and noise suppression characteristic control method May. 17, 2011
7938224 Coating for acoustic treatment integrating the function of frost treatment with hot air May. 10, 2011
7934581 Broadband noise resonator May. 3, 2011
7934582 Engine silencing and vibration reduction system and method May. 3, 2011
7921962 Silencing arrangement Apr. 12, 2011
7921966 Linear acoustic liner Apr. 12, 2011
7870929 Engine assembly, acoustical liner and associated method of fabrication Jan. 18, 2011
7866440 System for joining acoustic cellular panel sections in edge-to-edge relation Jan. 11, 2011
7861823 Duct for reducing shock related noise Jan. 4, 2011
7857093 Engine inlet deep acoustic liner section Dec. 28, 2010
7798285 Acoustic barrel for aircraft engine nacelle including crack and delamination stoppers Sep. 21, 2010
7735600 Monolithic acoustically-treated engine nacelle inlet panels Jun. 15, 2010
7735601 Engine noise Jun. 15, 2010
7631483 Method and system for reduction of jet engine noise Dec. 15, 2009
7621370 Sound increase apparatus Nov. 24, 2009

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