| |
 |
|
Class Information
Number: 181/232
Name: Acoustics > Sound-modifying means > Muffler, fluid conducting type > Separate distinct units serially connected
Description: Subject matter provided with a plurality of sound attenuating devices, each either of duplicate or different design and connected one after the other in the down-stream direction.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7416050 |
Gas expansion silencer |
Aug. 26, 2008 |
| 7380572 |
Energy attenuation apparatus for a conduit conveying liquid under pressure, system incorporating same, and method of attenuating energy in a conduit |
Jun. 3, 2008 |
| 7325570 |
Method and apparatus for noise suppression in a fluid line |
Feb. 5, 2008 |
| 7325474 |
Silencer |
Feb. 5, 2008 |
| 7303047 |
Apparatus for filtering ultrasonic noise within a fluid flow system |
Dec. 4, 2007 |
| 7021420 |
System and method for phased noise attenuation |
Apr. 4, 2006 |
| 7011180 |
System for filtering ultrasonic noise within a fluid flow system |
Mar. 14, 2006 |
| 7007718 |
Energy attenuation apparatus for a conduit conveying liquid under pressure, system incorporating same, and method of attenuating energy in a conduit |
Mar. 7, 2006 |
| 6983820 |
Noise and vibration suppressors |
Jan. 10, 2006 |
| 6938729 |
Exhaust gas system |
Sep. 6, 2005 |
| 6926117 |
Muffler for pneumatic hand tool |
Aug. 9, 2005 |
| 6880670 |
Muffler for suction system exhaust air used with an automatic cutting machine |
Apr. 19, 2005 |
| 6802387 |
Muffler with external water trap |
Oct. 12, 2004 |
| 6755279 |
Controllable muffler system for internal combustion engine |
Jun. 29, 2004 |
| 6722467 |
Noise attenuator for an air supply system of an internal combustion engine |
Apr. 20, 2004 |
| 6675933 |
Exhaust system for motorcycle |
Jan. 13, 2004 |
| 6644436 |
Device for noise configuration in a motor vehicle |
Nov. 11, 2003 |
| 6454047 |
System and method for phases noise attenuation |
Sep. 24, 2002 |
| 6382348 |
Twin muffler |
May. 7, 2002 |
| 6338363 |
Energy attenuation device for a conduit conveying liquid under pressure, system incorporating same, and method of attenuating energy in a conduit |
Jan. 15, 2002 |
| 6290557 |
Exhaust system for jet propulsion boat |
Sep. 18, 2001 |
| 6167984 |
Device and a method for sound reduction in a transport system for gaseous medium and use of the device in an exhaust system for ships |
Jan. 2, 2001 |
| 6073656 |
Energy attenuation device for a conduit conveying liquid under pressure, system incorporating same, and method of attenuating energy in a conduit |
Jun. 13, 2000 |
| 6050362 |
Exhaust system with seamed roll joints and method for manufacture |
Apr. 18, 2000 |
| 5726397 |
Vehicle exhaust device |
Mar. 10, 1998 |
| 5679916 |
Gun silencer |
Oct. 21, 1997 |
| 5493080 |
External arrangement for damping sounds in a pipe system |
Feb. 20, 1996 |
| 5444196 |
In line insertion muffler for marine engines |
Aug. 22, 1995 |
| 5426269 |
Muffler with catalytic converter arrangement; and method |
Jun. 20, 1995 |
| 5367131 |
Apparatus for treating hydrocarbon and carbon monoxide gases |
Nov. 22, 1994 |
| 5355973 |
Muffler with catalytic converter arrangement; and method |
Oct. 18, 1994 |
| 5262600 |
In-line insertion muffler for marine engines |
Nov. 16, 1993 |
| 5245140 |
Muffler |
Sep. 14, 1993 |
| 5206467 |
Muffler with a catalyst |
Apr. 27, 1993 |
| 5137432 |
Noise-preventative aquarium pump |
Aug. 11, 1992 |
| 5101886 |
Combination power and heat unit |
Apr. 7, 1992 |
| 5045005 |
Marine engine exhaust system and method |
Sep. 3, 1991 |
| 5043147 |
Combined muffler and catalytic converter exhaust unit |
Aug. 27, 1991 |
| 4926636 |
Engine-control apparatus |
May. 22, 1990 |
| 4921040 |
Power thermo-coupling unit |
May. 1, 1990 |
| 4909348 |
Stamp formed exhaust muffler with conformal outer shell |
Mar. 20, 1990 |
| 4880078 |
Exhaust muffler |
Nov. 14, 1989 |
| 4821840 |
Stamp formed exhaust muffler with conformal outer shell |
Apr. 18, 1989 |
| 4645031 |
Exhaust system for an internal combustion engine |
Feb. 24, 1987 |
| 4616732 |
Silencing system for exhaust gases from internal combustion engines |
Oct. 14, 1986 |
| 4361423 |
Combination acoustical muffler and exhaust converter |
Nov. 30, 1982 |
| 4354349 |
Exhaust system for an internal combustion engine |
Oct. 19, 1982 |
| 4286689 |
Exhaust gas muffler |
Sep. 1, 1981 |
| 4241805 |
High pressure gas vent noise control apparatus and method |
Dec. 30, 1980 |
| 4113050 |
Fluid-flow noise reduction systems |
Sep. 12, 1978 |
|
|
|
