| Patents for F01N 1 - Silencing apparatus characterised by method of silencing (8,998) |
|---|
| 09/05/1978 | US4111279 Louver flow muffler |
| 09/05/1978 | US4111278 Discharge muffler |
| 08/29/1978 | US4109756 High frequency diffusion muffler for gas jets |
| 08/29/1978 | US4109755 Noise attenuator |
| 08/29/1978 | US4109754 Noise absorber for air or gas flows |
| 08/29/1978 | US4109753 Muffler assembly |
| 08/29/1978 | US4109752 Muffler |
| 08/29/1978 | US4109751 Noise silencer |
| 08/29/1978 | US4109750 Zeno duct sound attenuating means |
| 08/29/1978 | US4109749 Muffler |
| 08/22/1978 | US4108276 Vent silencer |
| 08/22/1978 | US4108275 Muffler |
| 08/15/1978 | US4106587 Sound-suppressing structure with thermal relief |
| 08/08/1978 | US4105090 Muffler for exhaust gases |
| 08/08/1978 | US4105089 Flow distributor for gas turbine silencers |
| 07/25/1978 | US4102430 Peripheral return flow muffler |
| 07/04/1978 | US4098077 Mobile power unit housing |
| 06/13/1978 | US4094645 Combination muffler and catalytic converter having low backpressure |
| 06/13/1978 | US4094644 Catalytic exhaust muffler for motorcycles |
| 06/06/1978 | US4093406 Fluid operated hydraulic pump including noise reduction means |
| 06/06/1978 | US4093110 Noise and fouling reducer for powder-actuated tool |
| 06/06/1978 | US4093040 Silencer and cooler for pump unit |
| 05/30/1978 | US4091892 Phased treatment noise suppressor for acoustic duct applications |
| 05/23/1978 | US4090583 Streamlined monolithic internal combustion engine muffler |
| 05/16/1978 | US4089663 Pulsation and noise suppressor assembly with air filter |
| 05/09/1978 | US4088157 Hood system for covering an automatically operating machine |
| 04/18/1978 | US4084658 Tunable expansion chamber for internal combustion engines |
| 04/04/1978 | US4082160 Silencer for exhausting gas streams |
| 03/21/1978 | US4079810 Muffler |
| 03/21/1978 | US4079809 Muffler for pneumatic drill |
| 03/21/1978 | US4079808 Temperature sensitive device for causing abnormal muffler operation |
| 02/28/1978 | US4076099 Device for reducing engine exhaust noise |
| 02/21/1978 | US4074975 Combination exhaust-gas cleaner and muffler for an automobile engine |
| 02/14/1978 | US4073361 Muffler for motor vehicles |
| 01/17/1978 | US4068736 Method and device for reducing noise |
| 12/27/1977 | US4064962 Muffler method and apparatus |
| 12/20/1977 | US4063853 Noise dampening means in refrigeration motor-compressor units and method |
| 12/06/1977 | US4060985 Exhaust system of an internal combustion engine |
| 10/25/1977 | US4055231 Silencer for internal combustion engines |
| 09/27/1977 | US4050903 Combination muffler and catalytic converter |
| 09/27/1977 | US4050539 Exhaust apparatus for internal combustion engine |
| 09/20/1977 | US4049076 Sound damping apparatus |
| 09/20/1977 | US4049075 Sound damping apparatus |
| 09/06/1977 | US4046219 Exhaust silencer apparatus for internal combustion engine |
| 08/16/1977 | US4042062 Air pulse noise damper for a pneumatic tool |
| 08/02/1977 | US4038820 Two-cycle engine wave interference muffler means |
| 07/12/1977 | US4034826 Silencer for ventilation ducts |
| 07/05/1977 | US4033428 Muffler for intermittent blasts of air from pneumatic tools, valves and the like |
| 06/28/1977 | US4032310 Muffler and exhaust gas purifier for internal combustion engines |
| 06/28/1977 | US4031979 Adjustable muffler for model aircraft type engines |
| 06/07/1977 | US4027740 Multi-chamber muffler |
| 05/31/1977 | US4026381 Exhaust system cover assembly |
| 05/17/1977 | US4023645 Method and apparatus for reducing aerodynamic whistle |
| 05/10/1977 | US4022291 Exhaust muffler having an attenuater can assembly |
| 04/05/1977 | US4015683 Noise suppressor for vacuum sweeper and the like |
| 03/15/1977 | US4011922 Muffler construction |
| 02/08/1977 | US4006793 Engine muffler apparatus providing acoustic silencer |
| 01/25/1977 | US4004650 Silencers |
| 01/25/1977 | US4004649 Muffler |
| 01/18/1977 | US4003448 Jet catchers |
| 01/04/1977 | US4000786 Marine muffler |
| 01/04/1977 | US4000670 Method and apparatus for noise suppression |
| 12/28/1976 | US3999624 Acoustical attenuating device |
| 12/14/1976 | US3997020 Sound absorber |
| 12/07/1976 | US3995712 Muffler |
| 11/30/1976 | US3994364 Mufflers |
| 11/23/1976 | US3993160 Silencer for a heat engine |
| 11/02/1976 | US3989121 Pulse converting exhaust silencing system |
| 10/26/1976 | US3987868 Silencing device for internal combustion engines |
| 10/26/1976 | US3987867 Spark arresting muffler for engines |
| 10/12/1976 | US3985302 Variable two stage air nozzle |
| 09/28/1976 | US3982605 Nozzle noise silencer |
| 09/21/1976 | US3981378 Muffler for pile driving apparatus |
| 09/21/1976 | US3981377 Exhaust muffler for pneumatic tool or machine |
| 08/31/1976 | US3977493 Exhaust control method and apparatus |
| 07/20/1976 | US3970168 Muffler |
| 07/20/1976 | US3970167 Rotary flow muffler |
| 07/13/1976 | US3968854 Low noise level muffler for small engines |
| 07/06/1976 | US3967446 Exhaust relief silencing apparatus for marine propulsion systems |
| 06/29/1976 | US3966443 Exhaust gas purifier for internal combustion engine |
| 06/29/1976 | US3966015 Silencer element |
| 06/22/1976 | US3964570 Silencer for combustion engines |
| 06/15/1976 | US3963092 Exhaust muffler for competition car engines |
| 06/01/1976 | US3960509 Catalytic muffler |
| 06/01/1976 | US3960239 Noise-reducing fluid-flow devices |
| 05/25/1976 | US3958660 Muffler system |
| 05/18/1976 | US3957133 Muffler |
| 05/18/1976 | US3957132 Snowmobile muffler |
| 05/11/1976 | US3955643 Free flow sound attenuating device and method of making |
| 04/20/1976 | US3951171 Self-pressure regulating air ejector |
| 04/13/1976 | US3949830 Fan silencer |
| 04/13/1976 | US3949829 Exhaust silencer for motorcycle |
| 04/13/1976 | US3949828 Fluid exhaust silencer |
| 04/06/1976 | US3948349 Wave interference silencer |
| 04/06/1976 | US3948348 Wave interference silencer construction |
| 03/02/1976 | US3941206 Noise attenuating snubber |
| 03/02/1976 | US3941205 Method and means for controlling the air pressure in a sound-proofed hangar for testing jet engines |
| 02/10/1976 | US3937590 Acoustic duct with peripherally segmented acoustic treatment |