Patents
Sitemap › F01 - Machines or engines in general; Engine plants in general; Steam engines › F01N - Gas-flow silencers or exhaust apparatus for machines or engines in general; Gas-flow silencers or exhaust apparatus for internal-combustion engines › F01N 1 - Silencing apparatus characterised by method of silencing
Patents for F01N 1 - Silencing apparatus characterised by method of silencing (8,998)
04/1982
04/20/1982US4325459 Muffler diffuser
04/20/1982US4325458 Apparatus for reducing the exhaust noise of internal combustion engines or the like
04/13/1982US4324314 Muffler
04/13/1982CA1121784A2 Porous acoustic element and a method of controlling aerodynamic noise in a flowing gas
03/1982
03/23/1982US4320815 Noise reduction in engine exhaust
03/23/1982CA1120406A1 Mufflers for percussive pneumatic machines
03/18/1982WO1982000854A1 Lightweight muffler and method for muffling noise
03/17/1982EP0047678A1 Exhaust silencer with internal resonance chamber for combustion engines
03/02/1982US4317502 Engine exhaust muffler
02/1982
02/23/1982US4316523 Silencer for gas discharge devices
02/23/1982US4316522 Acoustic filter silencer
02/23/1982CA1118691A1 Silencer device
02/16/1982US4315971 Sound deadening
02/16/1982US4315560 Silencer for aircraft piston engine
02/16/1982US4315559 Muffler for internal combustion engine
02/04/1982WO1982000275A1 Resilient mounting for engine enclosures
01/1982
01/27/1982EP0044398A1 Exhaust filter for combustion engine
01/26/1982US4312422 Exhaust silencer for outboard engine with a reflection chamber
01/26/1982CA1117027A1 Exhaust system for a two-stroke engine
01/08/1982EP0029043A4 Packless silencer.
12/1981
12/16/1981EP0041831A1 Device for admitting air to the exhaust manifold of an internal combustion engine
12/15/1981US4305477 Exhaust tuning means for internal combustion engines
12/02/1981EP0040657A1 Acoustic energy absorbing device and method, and exhaust systems and air-conditioning or heating ducts containing said device
11/1981
11/24/1981CA1113012A1 Combination spark arrestor and aspirating muffler
11/10/1981US4299305 Apparatus for damping noise from exhaust air outlets
10/1981
10/27/1981US4296832 Exhaust muffler
10/27/1981US4296831 Acoustic liner for attenuating noise
10/13/1981US4294330 Mufflers for percussive pneumatic machines
10/06/1981CA1110175A1 Muffler for internal combustion engine
09/1981
09/22/1981US4290501 Exhaust silencer, especially for small vehicles
09/16/1981EP0035877A2 Centrifugal casting machine
09/08/1981US4287962 Packless silencer
09/02/1981EP0034603A1 Silencer for a combustion apparatus
09/02/1981EP0034592A1 A method of reducing the adaption time in the cancellation of repetitive vibration.
09/01/1981US4286976 Combined sound damper and oil trap for a compressed air apparatus
09/01/1981US4286689 Exhaust gas muffler
09/01/1981CA1108061A1 Absorption of acoustic energy from a fluid
08/1981
08/25/1981US4285916 Accelerating particles for ejection through aperatures in an open contour donut-shaped purification element; catalytic conversion of waste gases; muffling
08/25/1981CA1107655A1 Device for removing lead particles from the exhaust gases of an internal combustion engine
08/18/1981US4284162 Exhaust system of automotive vehicle
08/11/1981US4282950 Muffler
08/04/1981US4281742 Silencer for exhaust gases
08/04/1981US4281741 Compact exhaust silencer for diesel locomotives
07/1981
07/28/1981US4280588 Anti-pollution manifold for I.C.E.
07/14/1981US4278147 Muffler for engine, particularly motorcycle engine
07/07/1981CA1104360A1 Anti-icing noise-suppressing vortex tube assembly
06/1981
06/30/1981US4276012 Mold isolator mechanism for centrifugal casting machine
06/09/1981CA1102708A1 Complete louver flow muffler
06/03/1981EP0029506A1 Device for reducing the noise of exhaust or of waste gas
05/1981
05/27/1981EP0029043A1 Packless silencer.
05/26/1981US4269800 Process for the preparation of a composite mat consisting of a layer of mineral wool and a layer of steel wool
05/19/1981US4267899 Muffler assembly
05/19/1981CA1101151A1 Noise and fouling reducer for powder actuated tool
05/14/1981WO1981001306A1 Acoustic filter silencer
04/1981
04/28/1981US4264344 Diesel engine exhaust particulate trap
04/28/1981US4263982 Muffler for internal combustion engines and method of manufacturing same
04/28/1981US4263981 Vacuum pump exhaust muffler
04/22/1981EP0027311A1 Gas compressor with a muffler
04/21/1981US4262770 Porous acoustic element and a method of controlling aerodynamic noise in a flowing gas
03/1981
03/31/1981CA1098449A1 Exhaust muffler
03/18/1981EP0025033A1 Hydraulic noise attenuator.
03/17/1981CA1097570A1 Bubble noise reduction
03/05/1981WO1981000638A1 A method of reducing the adaption time in the cancellation of repetitive vibration
03/05/1981WO1981000591A1 Silencer for a combustion apparatus
03/03/1981US4253542 Exhaust silencer for earth moving machines
02/1981
02/24/1981US4252212 Muffler for combustion engines
02/24/1981CA1096312A1 Marine vessel noise attenuating structure
02/10/1981US4249922 Extractor tube arrangement for internal combustion engine air cleaner system
02/03/1981CA1094955A1 Exhaust device for internal combustion engines
01/1981
01/28/1981EP0023041A1 External housing for an internal combustion engine silencer
01/13/1981US4244442 Method and apparatus for treating exhaust gases particularly for air-operated tools
01/13/1981US4244441 Broad band acoustic attenuator
01/13/1981US4244440 Apparatus for suppressing internally generated gas turbine engine low frequency noise
01/07/1981EP0022063A1 Exhaust gas outlet device for internal combustion engines and method for its manufacture
01/07/1981EP0020823A1 Engine exhaust silencer
01/06/1981CA1092985A1 Muffler assembly
01/06/1981CA1092984A1 Spark arrester and engine muffler
12/1980
12/30/1980US4241805 High pressure gas vent noise control apparatus and method
12/16/1980US4239461 Compressor induction system
12/16/1980US4239091 Glass fiber-reinforced synthetic resin, aluminum tube, glass fibers as sound absorbers
12/16/1980CA1091511A1 Engine exhaust means for motor propelled boats
12/10/1980EP0020016A1 Acoustic liner for attenuating noise
12/10/1980EP0020015A1 Acoustic liner for attenuating noise
12/02/1980US4236598 Rotating self-cleaning sound absorber for ducts
11/1980
11/26/1980EP0019568A1 Silencer for pneumatic hammer
11/25/1980US4235304 Muffler
11/18/1980US4234054 Multi-duct muffler
11/18/1980US4233812 Gas discharge apparatus
11/18/1980CA1089774A1 Porous acoustic element and a method of controlling aerodynamic noise in a flowing gas
11/04/1980US4231763 Exhaust gas pollution control system
11/04/1980US4231447 Multi-layer acoustic linings
11/04/1980US4231221 Exhaust silencer for exhaust systems of internal combustion engines, particularly internal combustion engine-operated manual appliances
10/1980
10/30/1980WO1980002304A1 Packless silencer
10/21/1980US4228868 Muffler apparatus
10/14/1980US4227651 Nozzle for use on the exhaust of internal combustion engines
10/07/1980US4226298 Exhaust device for internal combustion engines
10/01/1980EP0016116A1 Exhaust system
09/1980
09/30/1980US4225561 Catalytic converter for transforming polluting gases into non-polluting gases
09/30/1980US4225011 Method and device for silencing the exhaust noise of internal combustion engines
09/18/1980WO1980001933A1 Fluidborne noise attenuator
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