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Class Information
Number: 181/238
Name: Acoustics > Sound-modifying means > Muffler, fluid conducting type > Multiple distinct inlets and/or outlets
Description: Subject matter wherein the moving fluid is introduced in the muffler via at least two inlets or expelled through at least two outlets.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7426980 |
Internal combustion engine exhaust system |
Sep. 23, 2008 |
| 7377359 |
Device for modulating noise in a motor vehicle |
May. 27, 2008 |
| 7104359 |
Muffler having a baffle with angled plates |
Sep. 12, 2006 |
| 6959782 |
Tuned exhaust system for small engines |
Nov. 1, 2005 |
| 6955043 |
Muffler assembly |
Oct. 18, 2005 |
| 6938727 |
Integrated engine compartment component and air intake system |
Sep. 6, 2005 |
| 6932189 |
Device for noise structuring in a motor vehicle |
Aug. 23, 2005 |
| 6926117 |
Muffler for pneumatic hand tool |
Aug. 9, 2005 |
| 6796402 |
Muffler having isolated dual flow baffle structure |
Sep. 28, 2004 |
| 6779628 |
Device for producing an overtone-rich sporty exhaust sound |
Aug. 24, 2004 |
| 6702062 |
Exhaust system for automobile engine |
Mar. 9, 2004 |
| 6622819 |
Sound attenuator for pneumatic exhaust |
Sep. 23, 2003 |
| 6588203 |
Exhaust device of internal combustion engine |
Jul. 8, 2003 |
| 6520287 |
Methods and systems for low temperature cleaning of diesel exhaust and other incomplete combustion products of carbon-containing fuels |
Feb. 18, 2003 |
| 6470998 |
Modular muffler with end plate adaptors and spark arresters |
Oct. 29, 2002 |
| 6467260 |
Gas flow headers for internal combustion engines |
Oct. 22, 2002 |
| 6457552 |
Methods and apparatus for low back pressure muffling of internal combustion engines |
Oct. 1, 2002 |
| 6431311 |
Muffler with interchangeable outlet tips |
Aug. 13, 2002 |
| 6382347 |
Exhaust muffler for an internal combustion engine |
May. 7, 2002 |
| 6161646 |
Turbo-generator exhaust noise silencer |
Dec. 19, 2000 |
| 6131696 |
Multiple inlet muffler |
Oct. 17, 2000 |
| 6045422 |
Wedge with angularly adjustable positions |
Apr. 4, 2000 |
| 6042437 |
Exhaust knock down spray |
Mar. 28, 2000 |
| 5979583 |
Muffler for motorcycle |
Nov. 9, 1999 |
| 5929398 |
Muffler device |
Jul. 27, 1999 |
| 5846107 |
Marine engine noise suppressor |
Dec. 8, 1998 |
| 5775100 |
Dual inlet muffler connection |
Jul. 7, 1998 |
| 5712455 |
Dual entry plug muffler |
Jan. 27, 1998 |
| 5608194 |
Exhaust pipe structure for a motorcycle |
Mar. 4, 1997 |
| 5594217 |
Exhaust muffler for small marine craft |
Jan. 14, 1997 |
| 5588888 |
Wet marine exhaust muffler |
Dec. 31, 1996 |
| 5519994 |
Muffler with inlet pipe equalizer |
May. 28, 1996 |
| 5473891 |
Three-piece stamp formed connector for achieving equal length exhaust pipes |
Dec. 12, 1995 |
| 5351481 |
Muffler assembly with balanced chamber and method |
Oct. 4, 1994 |
| 5329074 |
Marine engine exhaust muffler |
Jul. 12, 1994 |
| 5293744 |
Exhaust manifold muffler for an internal combustion engine |
Mar. 15, 1994 |
| 5248859 |
Collector/muffler/catalytic converter exhaust systems for evacuating internal combustion engine cylinders |
Sep. 28, 1993 |
| 5214253 |
Automotive exhaust system |
May. 25, 1993 |
| 5211144 |
Portable hand-held blower unit |
May. 18, 1993 |
| 5164551 |
Stamp formed muffler with compound reinforcement pattern for preventing shell ring |
Nov. 17, 1992 |
| 5164550 |
Intake muffler |
Nov. 17, 1992 |
| 5050520 |
Fume exhaustion safety device |
Sep. 24, 1991 |
| 5046935 |
Compressor with reduced vibrations |
Sep. 10, 1991 |
| 5046663 |
Heater |
Sep. 10, 1991 |
| 5046977 |
Exhaust muffler for marine engines |
Sep. 10, 1991 |
| 4977977 |
Marine engine external exhaust noise suppressor with swim platform |
Dec. 18, 1990 |
| 4953659 |
Fluid blow-off muffler |
Sep. 4, 1990 |
| 4949807 |
Engine exhaust muffler apparatus |
Aug. 21, 1990 |
| 4938309 |
Built-in vacuum cleaning system with improved acoustic damping design |
Jul. 3, 1990 |
| 4909348 |
Stamp formed exhaust muffler with conformal outer shell |
Mar. 20, 1990 |
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