US3710891A - Automotive muffler - Google Patents
Automotive muffler Download PDFInfo
- Publication number
- US3710891A US3710891A US00174829A US3710891DA US3710891A US 3710891 A US3710891 A US 3710891A US 00174829 A US00174829 A US 00174829A US 3710891D A US3710891D A US 3710891DA US 3710891 A US3710891 A US 3710891A
- Authority
- US
- United States
- Prior art keywords
- tube
- muffler
- throat
- casing
- fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/30—Tubes with restrictions, i.e. venturi or the like, e.g. for sucking air or measuring mass flow
Definitions
- ABSTRACT A muffler having a fluid inlet tube defining a Venturi throat and a perforate fluid outlet tube provided with an abutment at its inner end aligned with and spaced from the throat.
- the inlet tube terminates at the throat and, in another form, the throat is connected by a perforate tube of relatively small diameter with said abutment.
- a sound absorber surrounds the inlet and outlet tubes.
- This invention relates to mufflers for reducing the noise caused by discharge of gas such as, for example, from the exhaust of an internal combustion engine. More particularly, the invention relates to an automotive muffler having a Venturi throat.
- Automotive mufflers are of two general classifications depending upon the mode by which sound energy is removed from the gas stream passing therethrough. Those devices which attenuate by reflecting sound back to the source are called non-dissipative (reactive). Devices which absorb sound energy as the gas passes through them are called dissipative devices. Reactive mufflers are predominantly used in the exhaust of automobiles and other reciprocating engines and compressors. Among the methods for providing the necessary reflection are the change in direction caused by bends in the pipe confining the gas stream. Other configurations involve a straight-through gas path with side branch resonators to produce attenuation. Other known mufflers utilize combinations of resonators, filters and flow-reversing bends to provide adequate noise control. The muffler of the present invention utilizes characteristics of both the reactive and dissipative classification to accomplish the end result desired.
- the muffler of the present invention utilizes an inlet tube having a Venturi portion defining a Venturi throat by means of which the pressure of combustion gases can be increased progressively as the gases enter the muffler. This increase in pressure thereby reduces any tendency for back pressures to develop in the exhaust manifold itself, thus assuring proper exhausting of the combustion gases without affecting the operation of the exhaust valves.
- After the gases pass the throat of the Venturi portion they are caused to move laterally, thus conveying the sound energy associated with the gases laterally also.
- the soun d energy continues laterally and passes through a sound absorbing medium, is reflected by the internal surface of the outer casing of the muffler, then is returned back toward and through the sound absorbing medium. In this way, the sound energy is dissipated and, at the same time, the gases themselves pass outwardly of the muffler through a perforated exhaust or outlet tube which is generally of a relatively large cross section with respect to the throat of the Venturi.
- One form of the muffler utilizes an inlet tube which terminates at the Venturi throat so that a space is formed between the throat and an abutment aligned with and spaced from the throat and secured to the inner end of the exhaust tube.
- the incoming gases whose pressure is increased by the Venturi portion, can expand after passing through the throat and the abutment will prevent the gases from moving into the exhaust tube.
- the gases must move laterally and toward the sound absorbing medium, thereby directing the sound energy toward and into the medi-
- Another form of the muffler utilizes a perforate,
- the inner tube interconnecting the throat of the Venturi portion with the abutment on the inner end of the exhaust tube, the inner tube having a diameter of approximately the same size as the throat.
- the inner tube operates to cause a progressive decrease in the pressure of the gases while allowing the gases to move laterally and outwardly of the inner tube and toward the sound absorbing medium, thereby directing the sound energy toward and into the medium itself.
- the sound absorbing medium may be of a material, such as fiberglass or the like, which presents a plurality of paths through which the sound energy must pass.
- a portion of the combustion gases can be directed into the region immediately within the outer casing of the muffler to provide a buffer medium for absorbing the sound energy of the combustion gases as they move laterally after passing through the Venturi throat.
- FIG. 1 is a longitudinal cross-sectional view through one form of muffler embodying the invention
- FIG. 2 is a cross-section view taken along the line 2- 2 of FIG. 1;
- FIG. 3 is a perspective view of the muffler of FIGS. 1 and 2 with a portion thereof cut away to reveal certain components thereof;
- FIG. 4 is a view similar to FIG. 1 but showing a second form of the muffler
- FIG. 5 is a view similar to FIG. 4 but showing still I another form of the muffler.
- FIG. 6 is a cross-sectional view taken along line 6-6 of FIG. 5
- muffler 10 includes a generally cylindrical outer casing 12 necked down at opposite ends and having at one end an imperforate, cylindrical tube 14 coupled to an inlet tube 18 defining a Venturi portion with a throat.
- a perforate, cylindrical exhaust or outlet tube 16 is connected to and passes through the outer end of casing 12.
- Tube 16 is adapted for attachment to the tailpipe of an exhaust system of a motor vehicle.
- an imperforate, cylindrical sleeve segment 20 In fluid impervious engagement with a portion of exhaust tube 16 is an imperforate, cylindrical sleeve segment 20.
- Exhaust tube 16 has a perforate, cylindrical inner portion 22 having holes 24 therethrough.
- Inner portion 22 extends substantially between the inlet and outlet opening of casing 12 although it is shown slightly spaced from the inlet opening in FIG. 1.
- Tube 22 has an inner diameter approximately one-half that of casing 12, although diameter ratios of about 1:15 to 1:4 are also satisfactory.
- Holes 24 communicate with a space 32 between the Venturi throat and an imperforate abutment 26 to provide a total cross-section .inwardly of the throat about 10 to 20 percent greater than the cross-section of the throat opening itself. It is also preferred that the capacity (total open area) of the perforations 24 of tube 22 opening out of chamber 36 in tube 22 be equal to or up to 20 percent greater than the inlet capacity (cross-section) of the inlet opening in inlet tube 18.
- Abutment 26 has a flange that is secured such as by welding to tube 22. Abutment 26 is slightly convex relative to the inwardly tapering tube 18, so as to enhance dispersion of the exhaust stream impinging thereon from tube 18.
- the interior of outer casing 12 is lined with a sound absorbing material, such as a layer 28 of fiber glass, maintained in a generally cylindrical configuration adjacent to casing 12 by wire mesh 30 or other similarly perforated supporting member.
- the foregoing elements of muffler l define entry space or chamber 32, intermediate chamber 34 and egress chamber 36, each of which comprises a sound attenuating zone.
- exhaust gases entering tube 14 are increased in velocity and working pressure as they pass through the restricted opening created by inwardly tapering tube 18.
- tube 18 By forming tube 18 so that its respective larger and smaller ends have a diameter ratio of about 2 to l, the velocity of the exhaust gas can be increased by a factor in excess of 3 without significantly increasing the exhaust back pressure entering tube 14.
- the Venturi aspect of tube 18 provides for expansion of the gases into chamber 32 wherein a decrease in the intensity of sound wave energy, in a reversed megaphone effect, is obtained.
- Muffler can be fabricated with an outer casing having a diameter as small as 3 inches for automobiles or even smaller for other types of reciprocating or air engines, thereby enabling the device to be fitted into positions underneath many automobiles not presently capable of utilizing conventional mufflers.
- muffler 10 can be fabricated in a conventional manner such as by welding with standard materials such as steel, aluminum, and the like and alloys thereof.
- FIG. 4 A second embodiment of the muffler of this invention is shown in FIG. 4 and is broadly denoted by the numeral 50.
- Muffler 50 includes an outer, generally cylindrical casing 52, a tubular, wire mesh inner casing 54 spaced inwardly from casing 52.
- a tubular layer of a sound absorbing material, such as fiber glass, is disposed in the space 56 between casings 52 and 54.
- Casing 52 has a fluid entrance end and a fluid exit end.
- a conical tube 62 is in fluid communication with and extends inwardly from the entrance end of casing-52.
- Tube 62 defines a V enturi section having a throat 63.
- a perforate, cylindrical, inner tube 58 is connected to and extends inwardly from the throat of tube 62.
- Tube 58 has across section which is substantially the same as that of throat 63 and has a number of spaced holes 60 therethrough.
- the inner end of tube 64 is connected to an imperforate or plate 68 secured to and closing the inner end of a perforate, cylindrical exhaust tube 64 extending through the exit end of casing 52.
- Tube 64 has holes 66 therethrough and has a cross-section greater than that of inner tube 58 but less than that of inner casing 54.
- a cylindrical inlet tube is coupled at one end thereof to the inlet end of conical tube 62 and is adapted to be secured at its opposite end to a source of fluid under pressure, such as the exhaust manifold of an internal combustion engine. 7
- tube 70 is, for instance, coupled to the exhaust manifold of an internal combustion engine and combustion gases enter muffler 10 through tube 62.
- the pressure of the incoming gases is increased and, at throat 63, the pressure and velocity of the gases are at maximum valves due to the Venturi effect.
- the gases enter tube 58, they expand through holes 60 and move laterally and outwardly of tube 58 into the space surrounded byinner casing 54.
- the sound energy associated with these gases is in the form of pressure waves. These waves'also pass through holes 60 and travel toward and through inner casing 54 and into space 56.
- Tube 58 is also able to direct the sound energy associated with the gases laterally along with the gases through holes 60; thus, the sound energy can enter the fiber glass material and thereby be effectively trapped and dissipated by the many paths it must travel therethrough. By the time the gases exit from the muffler, the sound energy will, for the most part, have been adequately dissipated to avoid noise pollution due to the exhausting of the gases.
- a further embodiment of the muffler of this invention is broadly denoted by the numeral 80 (FIGS. 5 and 6) and includes an outer, cylindrical imperforate casing 82 having front and rear walls 83 and 85, respectively, each of these walls having an opening therethrough.
- An inner, perforate casing 84 is disposed within and spaced from outer casing 82.
- a conical inlet tube 86 having a throat 87 is coupled at its apex end to one end of a cylindrical, perforate inner tube 88 of relatively small cross section.
- the opposite end of inner tube 88 is coupled to an abutment wall or plate 90 secured to one end of a cylindrical, perforate tube 92 whose cross-section is greater than that of tube 88.
- Tube 92 extends through the opening of rear wall 85 and a cylindrical tube 98 is secured to and extends outwardly from the outer end of conical tube 86 in fluid communication with the opening of front wall 83.
- Tube 86 has an annular row of holes 102 therein near the entrance end of tube 86. Holes 102 communicate with the space 104 formed between casings 82 and 84, tube 84 having holes 106 therethrough, tube 88 having holes 108, and tube 92 having holes 110.
- muffler 80 is coupled to the exhaust manifold of an internal combustion engine.
- a major portion of the combustion gases entering tube 86 from tube 98 will flow toward and into tube 88 while a minor portion of the gases will enter space 104 through holes 102 and serve as a cushioning material for gases entering this space from tube 88.
- the Venturi effect of tube 86 causes an increase in pressure of the gases at throat 86 at which the pressure is a maximum.
- the pressure progressively decreases in tube 88 and passes laterally outwardly thereof through holes 108.
- the sound energy also passes laterally with the gases through holes 108 and the energy in the form of pressure waves passes through holes 106 in inner casing 84 and into space 104 at which the energy is dissipated by the pressurized gases within space 104.
- the sound energy is reflected off the inner surface of outer casing 82 and back into cushioning engagement with the gases in the space 104.
- the energy is effectively dissipated in this way.
- FIGS. 4 and 5 allow the respective exhaust tubes 64 and 92 to be uniform in cross section throughout their entire lengths and permit a Venturi ratio between the entrance and exit ends of respective conical tubes 58 and 88 to be as much as a 3 to 1. Moreover, inner 58 and 88 are of the same cross section as respective Venturi throats 63 and 87 to permit the build-up of greater pressures yet allow such pressures to progressively decrease as respective abutment walls 68 and 90 are approached.
- a muffler comprising: an outer, imperforate casing having a fluid entrance end and a fluid exit end; an inner, perforate casing within and spaced from the outer casing, the spaced between said casings adapted to receive a sound absorbing medium therein; a fluid inlet tube coupled at the entrance end of the casings, said inlet tube having a Venturi section provided with a throat; an abutment within the inner casing in alignment with said throat; and a perforate exhaust tube extending from the abutment through the exit end of said outer casing.
- a muffler comprising: an outer casing having a fluid entrance end and a fluid exit end; an inner casing within and spaced from the outer casing; a tubular space; a layer of sound absorbing material in the space between said casings; a fluid inlet tube extending inwardly from and in fluid communication with the entrance end of the outer casing, said inlet tube adapted to be coupled with a source of fluid under pressure and having a Venturi section provided with a throat; and a perforate exhaust tube extending through the exit end of the outer casing, the inner end of the exhaust tube having an imperforate abutment thereon in alignment with and spaced from said throat, the space adjacent to the throat and spanning the distance between the latter and the abutment being of a cross section greater than said throat.
- a muffler comprising: an outer casing having a fluid entrance end and a fluid exit end; an inner casing within and spaced from the outer casing and presenting therewith a sound absorbing space; a fluid inlet tube extending inwardly from and in fluid communication with the entrance end of the outer casing, said inlet tube having a Venturi section provided with a throat; a perforate exhaust tube extending through the exit end of the outer casing and into the inner casing, the exhaust tube having an imperforate abutment thereon at the inner end thereof, for closing; and a perforate, inner tube in fluid communication with the inlet tube at said throat and spanning the distance between the throat and said abutment, said inner tube having a cross section less than the cross section of the exhaust tube.
- a muffler for silencing sound in a flowing gas stream comprising: a tubular casing having ends defining substantially aligned inlet and outlet openings; a layer of sound I absorbing material concentrically disposed along the inner surface of said casing; a generally cylindrical perforated tube extending substantially from said inlet opening to said outlet opening and being spaced inwardly from said layer; means communicating with and extending inwardly from said inlet opening and having an open throat downstream of said inlet opening'for forming a fluid path which progressively decreases in cross-section as the throat is approached; means blocking direct gas flow from said inlet'opening to the outlet opening of said casing, whereby when gas is directed through said inlet opening, into said forming means, and against said blocking means, it will be accelerated, expanded and reversed in its direction of flow to pass outwardly of said tube through the perforations thereof, into and out of said layer and back into the tube through the perforations thereof located between said blocking means and said outlet opening, and finally out of the-casing through
Abstract
Description
Claims (18)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17482971A | 1971-08-25 | 1971-08-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3710891A true US3710891A (en) | 1973-01-16 |
Family
ID=22637698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00174829A Expired - Lifetime US3710891A (en) | 1971-08-25 | 1971-08-25 | Automotive muffler |
Country Status (3)
Country | Link |
---|---|
US (1) | US3710891A (en) |
BE (1) | BE799207A (en) |
DE (1) | DE2308360A1 (en) |
Cited By (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4109753A (en) * | 1976-11-19 | 1978-08-29 | Midas-International Corporation | Muffler assembly |
FR2392228A1 (en) * | 1977-05-27 | 1978-12-22 | Honda Motor Co Ltd | MUFFLER FOR INTERNAL COMBUSTION ENGINES |
US4137993A (en) * | 1977-09-21 | 1979-02-06 | Tenneco, Inc. | Insulated exhaust system component |
US4220219A (en) * | 1978-09-14 | 1980-09-02 | Flugger Ray T | Lightweight muffler and method for muffling noise |
US4372421A (en) * | 1975-07-18 | 1983-02-08 | Otis Jackson | Vehicle exhaust system |
EP0127550A2 (en) * | 1983-05-31 | 1984-12-05 | Mareau née Gayton, Betty | Silencer for a compressed-air system |
US4487290A (en) * | 1983-04-29 | 1984-12-11 | Mustang Units Co. | Light aircraft engine muffler |
US4550799A (en) * | 1983-02-22 | 1985-11-05 | Wayne King | Muffler for exhaust gases |
EP0380394A1 (en) * | 1989-01-27 | 1990-08-01 | Glaenzer Spicer | Exhaust gas silencer and exhaust section including such a silencer |
US5036585A (en) * | 1988-08-05 | 1991-08-06 | Grunzweig & Hartmann Ag | Process for the manufacture of an exhaust silencer |
US5934959A (en) * | 1997-11-10 | 1999-08-10 | Inman Marine Corporation | Marine muffler |
EP0959302A3 (en) * | 1998-05-20 | 2000-02-23 | Eberhard Reitz | Fluegas exhaust duct silencer |
US6082488A (en) * | 1999-09-22 | 2000-07-04 | Lin; Min-Chyr | Muffler for vehicles |
EP1029162A1 (en) * | 1997-11-03 | 2000-08-23 | Flowmaster, Inc. | Muffler with gas-dispersing shell and sound-absorption layers |
EP1099829A2 (en) * | 1999-11-11 | 2001-05-16 | Roland Kess | Insert for silencer |
US20030213643A1 (en) * | 2002-04-05 | 2003-11-20 | Martin Hirschorn | Attenuating power booster |
US20040079582A1 (en) * | 2002-10-29 | 2004-04-29 | Dondi Beda Charles | Muffler for suction system exhaust air used with an automatic cutting machine |
US20040178016A1 (en) * | 2003-03-10 | 2004-09-16 | Kazuo Yamamoto | Exhaust silencer for internal combustion engine |
US20040262077A1 (en) * | 2003-05-02 | 2004-12-30 | Huff Norman T. | Mufflers with enhanced acoustic performance at low and moderate frequencies |
US20050103566A1 (en) * | 1998-01-13 | 2005-05-19 | Exhaust Technologies, Inc. | Muffler for pneumatic hand tool |
US20060081416A1 (en) * | 2004-10-14 | 2006-04-20 | Nentrup Trent L | Exhaust silencer with acoustic damping mat |
US20070151798A1 (en) * | 2005-12-29 | 2007-07-05 | Harley-Davidson Motor Company Group, Inc. | Muffler for a motorcycle |
US20070158136A1 (en) * | 2006-01-06 | 2007-07-12 | Yamaha Hatsudoki Kabushiki Kaisha | Muffler and Vehicle Equipped with Muffler |
US20070158135A1 (en) * | 2006-01-06 | 2007-07-12 | Yamaha Hatsudoki Kabushiki Kaisha | Muffler and Vehicle Equipped with Muffler |
US20070169990A1 (en) * | 2006-01-26 | 2007-07-26 | National Institute Of Advanced Industrial Science And Technology | Jet engine |
EP1840344A1 (en) * | 2006-03-29 | 2007-10-03 | Yamaha Hatsudoki Kabushiki Kaisha | Exhaust apparatus for straddle-type vehicles and straddle-type vehicle |
US20070227811A1 (en) * | 2006-03-29 | 2007-10-04 | Yamaha Hatsudoki Kabushiki Kaisha | Vehicle exhaust system |
US20070227809A1 (en) * | 2006-03-29 | 2007-10-04 | Yamaha Hatsudoki Kabushiki Kaisha | Vehicle exhaust system |
US20070227810A1 (en) * | 2006-03-29 | 2007-10-04 | Yamaha Hatsudoki Kabushiki Kaisha | Vehicle exhaust system |
US20080308347A1 (en) * | 2007-06-15 | 2008-12-18 | Don Emler | Vehicular exhaust system |
US20090078498A1 (en) * | 2007-09-26 | 2009-03-26 | Darrin Woods | Seamless in-line airboat muffler |
US20110024228A1 (en) * | 2009-07-31 | 2011-02-03 | Honda Motor Co., Ltd. | Silencer provided on exhaust pipe of vehicle engine |
US20110186378A1 (en) * | 2008-09-22 | 2011-08-04 | Stebro Psd Ltd. | Open chamber exhaust mufflers and related methods of manufacture and use |
ES2388023A1 (en) * | 2009-03-16 | 2012-10-05 | Honda Motor Co. Ltd | Exhaust device for engine |
US20130125535A1 (en) * | 2011-11-22 | 2013-05-23 | Stephen B. SCHULTZ | Exhaust system for two-stroke internal combustion engine |
US8671671B1 (en) * | 2011-07-14 | 2014-03-18 | Northern California Diagnostic Laboratories | Exhaust system for an internal combustion engine |
US8707689B1 (en) * | 2011-07-14 | 2014-04-29 | Northern California Diagnostic Laboratories, Inc. | Exhaust system for an internal combustion engine |
US20150047922A1 (en) * | 2012-04-02 | 2015-02-19 | Tenneco Gmbh | Muffler having coupling of a tailpipe by means of a coupling chamber |
US20170028544A1 (en) * | 2014-04-07 | 2017-02-02 | Robert E. Sterling | Muffler for pneumatic power tool and pneumatic power tool incorporating the same |
CN107490171A (en) * | 2017-08-01 | 2017-12-19 | 广东美的制冷设备有限公司 | Muffler and there is its air conditioner |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3202373A1 (en) * | 1982-01-26 | 1983-08-04 | Knorr-Bremse GmbH, 8000 München | MUFFLER, ESPECIALLY FOR COMPRESSED AIR UNITS |
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US1820972A (en) * | 1929-07-05 | 1931-09-01 | Buffalo Pressed Steel Company | Muffler |
US2150811A (en) * | 1937-03-10 | 1939-03-14 | Buffalo Pressed Steel Company | Muffler |
US2523260A (en) * | 1946-03-28 | 1950-09-26 | John M Campbell | Baffle type muffler with refractory lining |
FR988370A (en) * | 1949-04-08 | 1951-08-27 | Exhaust | |
US2583366A (en) * | 1948-02-09 | 1952-01-22 | Willard H Engels | Muffler with perforated cylinder containing inwardly and rearwardly inclined holes |
AT199437B (en) * | 1956-01-17 | 1958-09-10 | Auto Union Gmbh | Exhaust system for two-stroke internal combustion engines |
FR1343005A (en) * | 1962-10-06 | 1963-11-15 | Silencieux Wilman Soc D Expl D | Process for the manufacture of exhaust silencers, optionally combined with a gas cleaning device |
FR1347893A (en) * | 1962-11-23 | 1964-01-04 | Silencer for pulsating gas flow |
-
1971
- 1971-08-25 US US00174829A patent/US3710891A/en not_active Expired - Lifetime
-
1973
- 1973-02-20 DE DE19732308360 patent/DE2308360A1/en active Pending
- 1973-05-07 BE BE130841A patent/BE799207A/en unknown
Patent Citations (8)
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US1820972A (en) * | 1929-07-05 | 1931-09-01 | Buffalo Pressed Steel Company | Muffler |
US2150811A (en) * | 1937-03-10 | 1939-03-14 | Buffalo Pressed Steel Company | Muffler |
US2523260A (en) * | 1946-03-28 | 1950-09-26 | John M Campbell | Baffle type muffler with refractory lining |
US2583366A (en) * | 1948-02-09 | 1952-01-22 | Willard H Engels | Muffler with perforated cylinder containing inwardly and rearwardly inclined holes |
FR988370A (en) * | 1949-04-08 | 1951-08-27 | Exhaust | |
AT199437B (en) * | 1956-01-17 | 1958-09-10 | Auto Union Gmbh | Exhaust system for two-stroke internal combustion engines |
FR1343005A (en) * | 1962-10-06 | 1963-11-15 | Silencieux Wilman Soc D Expl D | Process for the manufacture of exhaust silencers, optionally combined with a gas cleaning device |
FR1347893A (en) * | 1962-11-23 | 1964-01-04 | Silencer for pulsating gas flow |
Cited By (62)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4372421A (en) * | 1975-07-18 | 1983-02-08 | Otis Jackson | Vehicle exhaust system |
US4109753A (en) * | 1976-11-19 | 1978-08-29 | Midas-International Corporation | Muffler assembly |
FR2392228A1 (en) * | 1977-05-27 | 1978-12-22 | Honda Motor Co Ltd | MUFFLER FOR INTERNAL COMBUSTION ENGINES |
US4137993A (en) * | 1977-09-21 | 1979-02-06 | Tenneco, Inc. | Insulated exhaust system component |
US4220219A (en) * | 1978-09-14 | 1980-09-02 | Flugger Ray T | Lightweight muffler and method for muffling noise |
US4550799A (en) * | 1983-02-22 | 1985-11-05 | Wayne King | Muffler for exhaust gases |
US4487290A (en) * | 1983-04-29 | 1984-12-11 | Mustang Units Co. | Light aircraft engine muffler |
EP0127550A2 (en) * | 1983-05-31 | 1984-12-05 | Mareau née Gayton, Betty | Silencer for a compressed-air system |
EP0127550A3 (en) * | 1983-05-31 | 1986-12-30 | Henri Gayton | Silencer for a compressed-air system |
US5036585A (en) * | 1988-08-05 | 1991-08-06 | Grunzweig & Hartmann Ag | Process for the manufacture of an exhaust silencer |
EP0380394A1 (en) * | 1989-01-27 | 1990-08-01 | Glaenzer Spicer | Exhaust gas silencer and exhaust section including such a silencer |
FR2642470A1 (en) * | 1989-01-27 | 1990-08-03 | Glaenzer Spicer Sa | SILENCER FOR EXHAUST GASES AND EXHAUST LINE PART COMPRISING SUCH SILENCER |
US5109950A (en) * | 1989-01-27 | 1992-05-05 | Glaenzer Spicer | Silencer for exhaust gases and part of an exhaust line having such a silencer |
EP1029162A1 (en) * | 1997-11-03 | 2000-08-23 | Flowmaster, Inc. | Muffler with gas-dispersing shell and sound-absorption layers |
EP1029162A4 (en) * | 1997-11-03 | 2003-06-18 | Flowmaster Inc | Muffler with gas-dispersing shell and sound-absorption layers |
US5934959A (en) * | 1997-11-10 | 1999-08-10 | Inman Marine Corporation | Marine muffler |
US7216739B2 (en) * | 1998-01-13 | 2007-05-15 | Exhaust Technologies, Inc. | Muffler for pneumatic hand tool |
US20050103566A1 (en) * | 1998-01-13 | 2005-05-19 | Exhaust Technologies, Inc. | Muffler for pneumatic hand tool |
EP0959302A3 (en) * | 1998-05-20 | 2000-02-23 | Eberhard Reitz | Fluegas exhaust duct silencer |
US6082488A (en) * | 1999-09-22 | 2000-07-04 | Lin; Min-Chyr | Muffler for vehicles |
EP1099829A2 (en) * | 1999-11-11 | 2001-05-16 | Roland Kess | Insert for silencer |
EP1099829A3 (en) * | 1999-11-11 | 2003-10-15 | Roland Kess | Insert for silencer |
US7364011B2 (en) * | 2002-04-05 | 2008-04-29 | Martin Hirschorn | Attenuating power booster |
US20030213643A1 (en) * | 2002-04-05 | 2003-11-20 | Martin Hirschorn | Attenuating power booster |
US20040079582A1 (en) * | 2002-10-29 | 2004-04-29 | Dondi Beda Charles | Muffler for suction system exhaust air used with an automatic cutting machine |
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Also Published As
Publication number | Publication date |
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BE799207A (en) | 1973-08-31 |
DE2308360A1 (en) | 1974-08-22 |
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