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Class Information
Number: 181/229
Name: Acoustics > Sound-modifying means > Muffler, fluid conducting type > Carburetor, burner, or compressor intake silencer
Description: Subject matter wherein the fluid conducting attenuating device is mounted on a carburetor (air intake) of an internal-combustion engine.










Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8689934 Sound absorbing structure Apr. 8, 2014
8684132 Sound transmission system Apr. 1, 2014
8684133 Acoustically damped component Apr. 1, 2014
8634574 Sound transmitting device Jan. 21, 2014
8584795 Filter silencer Nov. 19, 2013
8579076 Splicing of curved acoustic honeycomb Nov. 12, 2013
8550209 Muffler for a turbo or piston engine Oct. 8, 2013
8540051 Silencer for a two-stroke motor of a power tool Sep. 24, 2013
8528692 Air intake duct Sep. 10, 2013
8516986 Intake system for a vehicle Aug. 27, 2013
8511428 Noise attenuator and vehicle air intake duct provided therewith Aug. 20, 2013
8500417 Motorized vacuum pump with sound absorbing unit Aug. 6, 2013
8485311 Air duct assembly for engine Jul. 16, 2013
8485153 Air intake apparatus Jul. 16, 2013
8474417 Lubricating system for air-cooled general-purpose engine Jul. 2, 2013
8443584 Inlet system for an EGR system May. 21, 2013
8408358 Morphing resonators for adaptive noise reduction Apr. 2, 2013
8408357 Air duct attenuator Apr. 2, 2013
8402737 Inlet system for an EGR system Mar. 26, 2013
8381871 Compact low frequency resonator Feb. 26, 2013
8360199 Integrated mass air flow sensor and broadband silencer Jan. 29, 2013
8348012 Resonator Jan. 8, 2013
8327975 Acoustic silencer Dec. 11, 2012
8322486 Intake sound generation apparatus for internal combustion engine Dec. 4, 2012
8316987 Muffling structure of vent pipe and muffling structure of case Nov. 27, 2012
8297404 Soundproof exhaust pipe for a turbine engine Oct. 30, 2012
8276707 Anti-noise device for the air intake conduit of a supercharged internal combustion engine Oct. 2, 2012
8246320 Muffler for compressor Aug. 21, 2012
8230968 Suction muffler for hermetic compressor Jul. 31, 2012
8215448 Sound damper for vehicle compressed air systems Jul. 10, 2012
8162101 Ram intake unit having a sound absorbing structure Apr. 24, 2012
8132552 Intake duct Mar. 13, 2012
8118568 Hermetic compressor Feb. 21, 2012
8097055 System for treating exhaust gas Jan. 17, 2012
8092563 System for treating exhaust gas Jan. 10, 2012
8087493 Sound absorber for a pipe-shaped, cavity-forming body Jan. 3, 2012
8083822 System for treating exhaust gas Dec. 27, 2011
8083026 Diffuser muffler Dec. 27, 2011
8069660 System for recovering waste heat from exhaust Dec. 6, 2011
8051948 Silencer apparatus with disposable silencer cartridge unit Nov. 8, 2011
8033359 Intake sound adjusting device Oct. 11, 2011
8021126 Compressor sound suppression Sep. 20, 2011
8011470 Compressor silencer for hyperbaric oxygen therapy system Sep. 6, 2011
8001945 Resonator for an intake system of a motor vehicle Aug. 23, 2011
7992676 Compact tuned acoustic attenuation device Aug. 9, 2011
7967106 Air induction sound modification system for internal combustion engine Jun. 28, 2011
7959416 Suction system for a refrigeration compressor Jun. 14, 2011
7950363 Air inlet system for internal combustion engine May. 31, 2011
7938225 Clean air duct noise silencing May. 10, 2011
7934582 Engine silencing and vibration reduction system and method May. 3, 2011

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