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Class Information
Number: 181/225
Name: Acoustics > Sound-modifying means > Muffler, fluid conducting type > With fan to assist fluid flow
Description: Subject matter wherein there is provided rotating fan means to assist in the movement of fluid through the sound modifying means.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8702379 Quiet blower apparatus and system and method for reducing blower noise Apr. 22, 2014
8701821 Acoustic dampening sleeve for electronic equipment and method of making the same Apr. 22, 2014
8678131 Acoustic baffle for centrifugal blowers Mar. 25, 2014
8511427 Blower arrangement Aug. 20, 2013
8485310 Silencing equipment for electric devices Jul. 16, 2013
8453790 Fan coil ceiling unit with closely coupled silencers Jun. 4, 2013
8434589 Obstruction device for reducing noise emitted from a blower May. 7, 2013
8365861 Muffler unit for fume extractor hood Feb. 5, 2013
8336672 Air treatment and sound reduction system Dec. 25, 2012
8240429 System method and devices for windage noise damping in induction motor Aug. 14, 2012
8210308 Sound attentuator Jul. 3, 2012
8151931 Acoustic noise control in heating or cooling systems Apr. 10, 2012
8146707 Air conditioner Apr. 3, 2012
8144465 Fan assembly and electronic device incorporating the same Mar. 27, 2012
8127886 Noise suppressor, electronic apparatus, and noise suppression characteristic control method Mar. 6, 2012
8091682 Sound absorbing system for electronic device Jan. 10, 2012
8087492 Methods and systems for integrating sound attenuation into a filter bank Jan. 3, 2012
8074765 Sound absorbing structure of electronic equipment Dec. 13, 2011
8069947 Sound attenuation canopy Dec. 6, 2011
7992674 Dipole flow driven resonators for fan noise mitigation Aug. 9, 2011
7990701 Computer device with low acoustic noise Aug. 2, 2011
7948755 Cooling system and electronic device using the same May. 24, 2011
7942234 Noise suppressor, electronic apparatus, and noise suppression characteristic control method May. 17, 2011
7921962 Silencing arrangement Apr. 12, 2011
7891464 System and method for noise suppression Feb. 22, 2011
7815012 Noise optimized air distributor Oct. 19, 2010
7806229 Fan powered silencing terminal unit Oct. 5, 2010
7788763 Fan motor noise reduction device and vacuum cleaner with the same Sep. 7, 2010
7789194 Acoustic attenuation chamber Sep. 7, 2010
7779960 System and method for noise suppression Aug. 24, 2010
7762373 Fan noise control apparatus Jul. 27, 2010
7724515 Disk array apparatus May. 25, 2010
7717135 Energy attenuation device May. 18, 2010
7712576 Sound absorbing structure of electronic equipment May. 11, 2010
7644803 Silencing device Jan. 12, 2010
7581619 Movable baffle columns for use with air handling units Sep. 1, 2009
7546898 Noise reduction with resonatance chamber Jun. 16, 2009
7527484 Muffler of scroll compressor May. 5, 2009
7383919 Rotatable propeller driven engine exhaust system Jun. 10, 2008
7379299 Noiseproofed and ventilated enclosure for electronics equipment May. 27, 2008
7379298 Noise proofed ventilated air intake chamber for electronics equipment enclosure May. 27, 2008
7347222 Energy attenuation device Mar. 25, 2008
7337876 Suction apparatus with noise reduction means Mar. 4, 2008
7314113 Acoustic absorbers for use with computer cabinet fans and other cooling systems Jan. 1, 2008
7249613 Energy attenuation device Jul. 31, 2007
7112038 Blower muffler and vibration isolation Sep. 26, 2006
7017706 Turbine noise absorber Mar. 28, 2006
6974376 Air conditioner for vehicle with noise-reduction means Dec. 13, 2005
6953104 Muffin fan hush hood Oct. 11, 2005
6920959 Inlet and outlet duct units for air supply fan Jul. 26, 2005

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