US2732026A - Muffler with flashing and spark - Google Patents

Muffler with flashing and spark Download PDF

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Publication number
US2732026A
US2732026A US2732026DA US2732026A US 2732026 A US2732026 A US 2732026A US 2732026D A US2732026D A US 2732026DA US 2732026 A US2732026 A US 2732026A
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chamber
wall
outlet
muffler
flashing
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00Silencing apparatus characterised by method of silencing
    • F01N1/08Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00Silencing apparatus characterised by method of silencing
    • F01N1/06Silencing apparatus characterised by method of silencing by using interference effect
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/06Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for extinguishing sparks
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00Gas separation
    • Y10S55/30Exhaust treatment

Definitions

  • This invention relates to a muffler for internal combustion engines and has particular reference to a muffler which is constructed and arranged to attenuate the sound waves and to eliminate flashing of the exhaust gases and the discharge of sparks.
  • exhaust gases from internal combustion engines are discharged at high pressure and high velocity, high pressure pulses are produced which result in peaks in the sound waves unless the sound waves are attenuated. Furthermore, the exhaust gases include unconsumed gases of combustion which frequently ignite producing a flashing and an explosive sound and the discharge of sparks.
  • An object of the present invention is to provide a muffler which attenuates the peaks of the sound waves so as to dampen the explosive sounds and which prevents the flashing through the mufller of unconsumed gases as well as eliminating the discharge of sparks.
  • Another object of the invention is to provide a muffler having spaced expansion chambers formed with perforated walls for directing the flow of the exhaust gases in the form of streams into attenuating chambers and having a chamber located adjacent the outlet thereof which is separated from a surrounding attenuating chamber by an inner wall and an overlying screen providing a flashing and spark eliminating means.
  • Another object of the invention is to provide a mufiler of said character having an outlet chamber adjacent the outlet opening which is closed at the inner end and provided with a foraminous peripheral wall and an overlying screen which separates the outlet chamber from a surrounding chamber.
  • Fig. l is a longitudinal sectional view of a muffler constructed in accordance with the invention.
  • Fig. 2 is a cross-sectional view taken approximately on line 2-2 of Fig. 1.
  • Fig. 3 is a cross-sectional view taken approximately on line 3-3 of Fig. 2.
  • the muffler includes a tubular shell 11 which is closed at its ends by heads 12 and 13.
  • the head 12 has a tubular extension 14 forming an inlet 15 and providing means for connecting the mufiler with the exhaust manifold of an internal combustion engine, and the head 13 has a tubular extension 16 forming a discharge outlet 17.
  • the mufller is provided with means for attenuating the sound waves produced by the exhaust gases admitted through the inlet 15 and with means for preventing the flashing of unconsumed gases through the outlet 17 as well as arresting sparks within the mutfler and preventing the discharge thereof.
  • the muffler is provided with partitioning walls 18, 19, and which are secured to the inner face of the shell in longitudinally spaced relation.
  • the walls 18 and 19 are centrally apertured and secured thereto about the apertures therein is an apertured shell 21 disposed in alignment with the inlet 15.
  • the wall 18 being spaced from the head 12 provides an expansion chamber 22 adjacent the inlet 15 and the walls 19 and 20 provide an expansion chamber 23 at the outlet of the apertured shell 21.
  • the shell 21 is provided with a plurality of longitudinally and radially arranged rows of inwardly offset louvers 25 having forwardly disposed openings 26 for directing a portion of the exhaust gases flowing through the shell 21 into the surrounding chamber 27 in the form of streams or whirls to thereby produce a turbulence 0f the gases in the surrounding chamber 27 and attenuate the peaks of the sound waves.
  • the wall 19 is formed with concentric rows of outwardly directed louvers 29 providing inwardly directed openings 30 through which the exhaust gases are discharged from the chamber 27 into the expansion chamber 23.
  • the exhaust gases admitted through the inlet 15 expand in the chambers 22 and 23 with a consequent reduction in the velocity of the flow so as to diminish the peaks of the sound waves while the turbulence in the gases produced in the chamber 27 and in the chamber 23 by the arrangement of the louvers 25 and 29 effects a further attenuation of the peaks of the sound waves.
  • the mufller Adjacent the outlet 17, the mufller is provided with an outlet chamber 32 disposed in alignment with the outlet 17 and which is closed at its inner end by the partition wall 20.
  • a foraminous shell 33 Secured in fixed position between the partition wall 20 and the head 13 is a foraminous shell 33 in which the openings 34 are spaced apart substantially a distance corresponding to the cross-sectional dimension of the openings.
  • the said shell forms the peripheral wall of the chamber 32 and separates the same from a surrounding chamber 35 located between the partition wall 20 and the head 13.
  • a fine mesh screen 36 Overlying the foraminous shell 33 is a fine mesh screen 36 which is in contact with the outer periphery thereof and overlies the openings 34 as well as the intervening portions thereof.
  • the partition wall 20 is formed with concentric rows of openings 37 for the flow of exhaust gases from the chamber 23 into the chamber 35 surrounding the outlet chamber 32.
  • the partition wall 20 thus functions to eliminate practically all possibility of ignition of unconsumed gases in the chamber 35 and the foraminous shell 33 and overlying screen 36 function to eliminate flashing of the gases in the outlet chamber 32 and the discharge of sparks therethrough. While finely divided glowing carbon particles frequently pass with the exhaust gases into the inuflfler, such particles will be arrested in the chamber 35 by means of the peripheral wall 33 and screen 36.
  • the screen 36 is of sufliciently fine mesh to prevent the discharge of ordinary size carbon particles from falling therethrough and retains the same in the chamber 35. A 40 mesh screen has been found to be satisfactory but the same is not limited to such mesh screen.
  • the screen is of corrosive-proof material which will withstand the corrosive action of fumes and gases in the exhaust gases and given off by the carbon particles.
  • the head 13 is made up of a removable section 38 and a fixed section 39 having a peripheral flange 40 secured to the inner face of the tubular shell 11.
  • the removable section 38 has the tubular extension 16 formed as an integral part thereof and this section is removably secured to the fixed section 39 by means of a plurality of radially arranged bolts 41 extending through aligned openings in the said sections.
  • the section 38 may be readily removed by removing the bolts 41 so as to gain access to the chamber 32 within the peripheral wall 33 as well as the chamber 35.
  • the partition wall 20 is formed with an offset central portion providing an annular shoulder 43 and the removable section, 33 ofthe end wall 13 is formed with an offset central portion forming an annular shoulder 44.
  • the shoulders 43 and 44 extend toward each other and the foraminous shell 33 and screen 36 fittingly engage about said shoulders at their ends for securing the same in fixed position between the partition wall 20 and end wall 13.
  • a metal casing having inner and outer end walls provided with inlet and outlet openings respectively, a partition, wall disposed intermediate said end walls, a foraminous tubular wall secured in fixed position between said partition Wall and said outer end wall with the outer end of said tubular wall surrounding the outlet opening to thereby provide an outlet chamber in communication with the outlet opening and a chamber surrounding said tubular wall and located between the same and said casing, said partition wall closing the inner end of said outlet chamber and having apertures opening into said surrounding chamber for the flow of exhaust gases into said surrounding chamber and through said tubular wall into the outlet chamber, and a wire screen surrounding and closely fitting said tubular wall for arresting sparks passing with the exhaust gases and for preventing flashing of unconsumed gases in the outlet chamber.
  • a metal casing having inner and outer end walls provided with inlet and outlet openings respectively, a partition wall secured to said casing intermediate said end walls, a roramineustubular wall secured in fixed position between said partition wall and said outer end wall with the outer end of said tubular wall surrounding said outlet opening to thereby provide an outlet chamber in communication with the outlet opening and a chamber surrounding said tubular wall and located between the same and said casing, said partition Wall closing the inner end of said outlet chamber, a wire screen surrounding and closely fitting said tubular wall for arresting sparks passing with the exhaust gases, and said outer end wall including; a section fixed to said casing and a section removably secured to said fixed section for cleaning out particles deposited in said surrounding chamber when the removable section is removed.

Description

B. C. FOLTS Jan. 24, 1956 MUFFLER WITH FLASHING AND SPARK EILIMINATING MEANS Filed Aug. 6, 1952 INVENTOR. 501?? 6 FZL r;
KMM
a'rfamwF/s United States Patent MUFFLER WITH FLASHING AND SPARK ELIMINATING MEANS Burr C. Folts, Herkimer, N. Y. Application August 6, 1952, Serial No. 302,946
2 Claims. (Cl. 18157) This invention relates to a muffler for internal combustion engines and has particular reference to a muffler which is constructed and arranged to attenuate the sound waves and to eliminate flashing of the exhaust gases and the discharge of sparks.
Since exhaust gases from internal combustion engines are discharged at high pressure and high velocity, high pressure pulses are produced which result in peaks in the sound waves unless the sound waves are attenuated. Furthermore, the exhaust gases include unconsumed gases of combustion which frequently ignite producing a flashing and an explosive sound and the discharge of sparks.
An object of the present invention is to provide a muffler which attenuates the peaks of the sound waves so as to dampen the explosive sounds and which prevents the flashing through the mufller of unconsumed gases as well as eliminating the discharge of sparks.
Another object of the invention is to provide a muffler having spaced expansion chambers formed with perforated walls for directing the flow of the exhaust gases in the form of streams into attenuating chambers and having a chamber located adjacent the outlet thereof which is separated from a surrounding attenuating chamber by an inner wall and an overlying screen providing a flashing and spark eliminating means.
Another object of the invention is to provide a mufiler of said character having an outlet chamber adjacent the outlet opening which is closed at the inner end and provided with a foraminous peripheral wall and an overlying screen which separates the outlet chamber from a surrounding chamber.
With the foregoing and other objects in view, reference is now made to the following specification and accompanying drawings in which the prevailing embodiment of the invention is illustrated.
In the drawings:
Fig. l is a longitudinal sectional view of a muffler constructed in accordance with the invention.
Fig. 2 is a cross-sectional view taken approximately on line 2-2 of Fig. 1.
Fig. 3 is a cross-sectional view taken approximately on line 3-3 of Fig. 2.
Referring to the drawings by characters of reference, the muffler includes a tubular shell 11 which is closed at its ends by heads 12 and 13. The head 12 has a tubular extension 14 forming an inlet 15 and providing means for connecting the mufiler with the exhaust manifold of an internal combustion engine, and the head 13 has a tubular extension 16 forming a discharge outlet 17.
The mufller is provided with means for attenuating the sound waves produced by the exhaust gases admitted through the inlet 15 and with means for preventing the flashing of unconsumed gases through the outlet 17 as well as arresting sparks within the mutfler and preventing the discharge thereof. For this purpose, the muffler is provided with partitioning walls 18, 19, and which are secured to the inner face of the shell in longitudinally spaced relation. The walls 18 and 19 are centrally apertured and secured thereto about the apertures therein is an apertured shell 21 disposed in alignment with the inlet 15. The wall 18 being spaced from the head 12 provides an expansion chamber 22 adjacent the inlet 15 and the walls 19 and 20 provide an expansion chamber 23 at the outlet of the apertured shell 21. The shell 21 is provided with a plurality of longitudinally and radially arranged rows of inwardly offset louvers 25 having forwardly disposed openings 26 for directing a portion of the exhaust gases flowing through the shell 21 into the surrounding chamber 27 in the form of streams or whirls to thereby produce a turbulence 0f the gases in the surrounding chamber 27 and attenuate the peaks of the sound waves.
The wall 19 is formed with concentric rows of outwardly directed louvers 29 providing inwardly directed openings 30 through which the exhaust gases are discharged from the chamber 27 into the expansion chamber 23. The exhaust gases admitted through the inlet 15 expand in the chambers 22 and 23 with a consequent reduction in the velocity of the flow so as to diminish the peaks of the sound waves while the turbulence in the gases produced in the chamber 27 and in the chamber 23 by the arrangement of the louvers 25 and 29 effects a further attenuation of the peaks of the sound waves.
Adjacent the outlet 17, the mufller is provided with an outlet chamber 32 disposed in alignment with the outlet 17 and which is closed at its inner end by the partition wall 20. Secured in fixed position between the partition wall 20 and the head 13 is a foraminous shell 33 in which the openings 34 are spaced apart substantially a distance corresponding to the cross-sectional dimension of the openings. The said shell forms the peripheral wall of the chamber 32 and separates the same from a surrounding chamber 35 located between the partition wall 20 and the head 13. Overlying the foraminous shell 33 is a fine mesh screen 36 which is in contact with the outer periphery thereof and overlies the openings 34 as well as the intervening portions thereof.
The partition wall 20 is formed with concentric rows of openings 37 for the flow of exhaust gases from the chamber 23 into the chamber 35 surrounding the outlet chamber 32. The partition wall 20 thus functions to eliminate practically all possibility of ignition of unconsumed gases in the chamber 35 and the foraminous shell 33 and overlying screen 36 function to eliminate flashing of the gases in the outlet chamber 32 and the discharge of sparks therethrough. While finely divided glowing carbon particles frequently pass with the exhaust gases into the inuflfler, such particles will be arrested in the chamber 35 by means of the peripheral wall 33 and screen 36. The screen 36 is of sufliciently fine mesh to prevent the discharge of ordinary size carbon particles from falling therethrough and retains the same in the chamber 35. A 40 mesh screen has been found to be satisfactory but the same is not limited to such mesh screen. The screen is of corrosive-proof material which will withstand the corrosive action of fumes and gases in the exhaust gases and given off by the carbon particles.
In order to clean out the chamber 35 and to remove the deposit of carbon particles, the head 13 is made up of a removable section 38 and a fixed section 39 having a peripheral flange 40 secured to the inner face of the tubular shell 11. The removable section 38 has the tubular extension 16 formed as an integral part thereof and this section is removably secured to the fixed section 39 by means of a plurality of radially arranged bolts 41 extending through aligned openings in the said sections. The section 38 may be readily removed by removing the bolts 41 so as to gain access to the chamber 32 within the peripheral wall 33 as well as the chamber 35.
The partition wall 20 is formed with an offset central portion providing an annular shoulder 43 and the removable section, 33 ofthe end wall 13 is formed with an offset central portion forming an annular shoulder 44. The shoulders 43 and 44 extend toward each other and the foraminous shell 33 and screen 36 fittingly engage about said shoulders at their ends for securing the same in fixed position between the partition wall 20 and end wall 13.
What is claimed is:
,1. In a mufiier, a metal casing having inner and outer end walls provided with inlet and outlet openings respectively, a partition, wall disposed intermediate said end walls, a foraminous tubular wall secured in fixed position between said partition Wall and said outer end wall with the outer end of said tubular wall surrounding the outlet opening to thereby provide an outlet chamber in communication with the outlet opening and a chamber surrounding said tubular wall and located between the same and said casing, said partition wall closing the inner end of said outlet chamber and having apertures opening into said surrounding chamber for the flow of exhaust gases into said surrounding chamber and through said tubular wall into the outlet chamber, and a wire screen surrounding and closely fitting said tubular wall for arresting sparks passing with the exhaust gases and for preventing flashing of unconsumed gases in the outlet chamber.
2. In a mufiler, a metal casing having inner and outer end walls provided with inlet and outlet openings respectively, a partition wall secured to said casing intermediate said end walls, a roramineustubular wall secured in fixed position between said partition wall and said outer end wall with the outer end of said tubular wall surrounding said outlet opening to thereby provide an outlet chamber in communication with the outlet opening and a chamber surrounding said tubular wall and located between the same and said casing, said partition Wall closing the inner end of said outlet chamber, a wire screen surrounding and closely fitting said tubular wall for arresting sparks passing with the exhaust gases, and said outer end wall including; a section fixed to said casing and a section removably secured to said fixed section for cleaning out particles deposited in said surrounding chamber when the removable section is removed.
References Cited in the tile of this patent UNITED STATES PATENTS 227,341 Zellner May 4, 1880 1,376,957 MacKenzie May 3, 1921 1,838,645 Voigt Dec. 29, 1931 2,083,840 Haas June 15, 1937 2,185,584 Boyce Ian. 2, 1940 2,213,614 Scarritt Sept. 3, 1940 2,233,804 Bourne Mar. 4, 1941 2,583,366 Engels Jan. 22, 1952
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Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2788078A (en) * 1954-12-02 1957-04-09 Reindl Joseph Exhaust muffler
US2928491A (en) * 1955-02-21 1960-03-15 John M Crouch Sound and gas-flow control unit
US3530649A (en) * 1968-06-28 1970-09-29 Fred W Porsch Air pollution control device for engines
US3724670A (en) * 1971-02-12 1973-04-03 Fram Corp Separating fluids
US3863733A (en) * 1972-04-03 1975-02-04 Skyway Machine Inc Exhaust silencer for internal combustion engine
US3898064A (en) * 1974-05-09 1975-08-05 Rockwell International Corp Apparatus for filtering engine exhaust
US3918549A (en) * 1973-10-23 1975-11-11 Murphy Muffler Inc Sound damping apparatus
US4004649A (en) * 1974-05-23 1977-01-25 Nissan Motor Co., Ltd. Muffler
US4011922A (en) * 1975-07-18 1977-03-15 Nelson Industries, Inc. Muffler construction
US4032310A (en) * 1974-05-15 1977-06-28 Ignoffo Vincent E Muffler and exhaust gas purifier for internal combustion engines
US4212657A (en) * 1978-01-16 1980-07-15 Fiat Societa Per Azioni Device for the removal of particles of lead from the exhaust gases of an internal combustion engine
US4218228A (en) * 1978-04-27 1980-08-19 Hoei Industry Co., Ltd. Exhaust gas purifying device
US4234054A (en) * 1978-04-18 1980-11-18 Chapin John S Multi-duct muffler
JPS5676113U (en) * 1979-11-15 1981-06-22
GB2197026A (en) * 1986-09-29 1988-05-11 Truscott John Henry Peycke Exhaust silencers for i.c. engines
US5177962A (en) * 1992-01-14 1993-01-12 Tecumseh Products Company External spark arrestor
US5246472A (en) * 1990-03-22 1993-09-21 Donaldson Company, Inc. Apparatus for filtering engine exhaust
FR2761404A1 (en) * 1997-03-25 1998-10-02 Honda Motor Co Ltd Vehicle exhaust system
US6010549A (en) * 1997-06-23 2000-01-04 Honda Giken Kogyo Kabushiki Kaisha Spark arrester of muffler
US6431311B1 (en) * 2000-06-21 2002-08-13 Scambia Industrial Developments Ag Muffler with interchangeable outlet tips
US20050103567A1 (en) * 2003-11-13 2005-05-19 Petracek Ronald J. Exhaust muffler for internal combustion engines
US20050155820A1 (en) * 2004-01-16 2005-07-21 Flugger Ray T. One-piece end cap for a muffler and method of forming same
US20080121456A1 (en) * 2006-09-22 2008-05-29 Roger George Lee Davis Motorcycle Exhaust Assembly and Method of Using Same
US20090283358A1 (en) * 2008-05-15 2009-11-19 Hughey Christopher Sound-reducing baffle
US20100084220A1 (en) * 2008-10-06 2010-04-08 Zvi Shaya Sound-attenuating muffler having reduced back pressure
US8523974B2 (en) * 2011-08-18 2013-09-03 General Electric Company Filter core for use with pleated filter cartridges
US11220949B2 (en) * 2017-11-08 2022-01-11 Toyota Jidosha Kabushiki Kaisha Exhaust silencer device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US227341A (en) * 1880-05-04 Noise-quieting steam-nozzle
US1376957A (en) * 1917-03-16 1921-05-03 Buffalo Pressed Steel Co Exhaust-muffler
US1838645A (en) * 1929-01-07 1931-12-29 Albert P J Voigt Muffler
US2083840A (en) * 1935-01-18 1937-06-15 Buffalo Pressed Steel Company Muffler
US2185584A (en) * 1940-01-02 Muffler
US2213614A (en) * 1939-05-18 1940-09-03 Winthrop T Scarritt Muffler
US2233804A (en) * 1938-07-18 1941-03-04 Maxim Silencer Co Fluid silencer
US2583366A (en) * 1948-02-09 1952-01-22 Willard H Engels Muffler with perforated cylinder containing inwardly and rearwardly inclined holes

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US227341A (en) * 1880-05-04 Noise-quieting steam-nozzle
US2185584A (en) * 1940-01-02 Muffler
US1376957A (en) * 1917-03-16 1921-05-03 Buffalo Pressed Steel Co Exhaust-muffler
US1838645A (en) * 1929-01-07 1931-12-29 Albert P J Voigt Muffler
US2083840A (en) * 1935-01-18 1937-06-15 Buffalo Pressed Steel Company Muffler
US2233804A (en) * 1938-07-18 1941-03-04 Maxim Silencer Co Fluid silencer
US2213614A (en) * 1939-05-18 1940-09-03 Winthrop T Scarritt Muffler
US2583366A (en) * 1948-02-09 1952-01-22 Willard H Engels Muffler with perforated cylinder containing inwardly and rearwardly inclined holes

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2788078A (en) * 1954-12-02 1957-04-09 Reindl Joseph Exhaust muffler
US2928491A (en) * 1955-02-21 1960-03-15 John M Crouch Sound and gas-flow control unit
US3530649A (en) * 1968-06-28 1970-09-29 Fred W Porsch Air pollution control device for engines
US3724670A (en) * 1971-02-12 1973-04-03 Fram Corp Separating fluids
US3863733A (en) * 1972-04-03 1975-02-04 Skyway Machine Inc Exhaust silencer for internal combustion engine
US3918549A (en) * 1973-10-23 1975-11-11 Murphy Muffler Inc Sound damping apparatus
US3898064A (en) * 1974-05-09 1975-08-05 Rockwell International Corp Apparatus for filtering engine exhaust
US4032310A (en) * 1974-05-15 1977-06-28 Ignoffo Vincent E Muffler and exhaust gas purifier for internal combustion engines
US4004649A (en) * 1974-05-23 1977-01-25 Nissan Motor Co., Ltd. Muffler
US4011922A (en) * 1975-07-18 1977-03-15 Nelson Industries, Inc. Muffler construction
US4212657A (en) * 1978-01-16 1980-07-15 Fiat Societa Per Azioni Device for the removal of particles of lead from the exhaust gases of an internal combustion engine
US4234054A (en) * 1978-04-18 1980-11-18 Chapin John S Multi-duct muffler
US4218228A (en) * 1978-04-27 1980-08-19 Hoei Industry Co., Ltd. Exhaust gas purifying device
JPS5676113U (en) * 1979-11-15 1981-06-22
JPS618178Y2 (en) * 1979-11-15 1986-03-13
GB2197026A (en) * 1986-09-29 1988-05-11 Truscott John Henry Peycke Exhaust silencers for i.c. engines
US5246472A (en) * 1990-03-22 1993-09-21 Donaldson Company, Inc. Apparatus for filtering engine exhaust
US5177962A (en) * 1992-01-14 1993-01-12 Tecumseh Products Company External spark arrestor
FR2761404A1 (en) * 1997-03-25 1998-10-02 Honda Motor Co Ltd Vehicle exhaust system
US6010549A (en) * 1997-06-23 2000-01-04 Honda Giken Kogyo Kabushiki Kaisha Spark arrester of muffler
US6431311B1 (en) * 2000-06-21 2002-08-13 Scambia Industrial Developments Ag Muffler with interchangeable outlet tips
US20050103567A1 (en) * 2003-11-13 2005-05-19 Petracek Ronald J. Exhaust muffler for internal combustion engines
US7044266B2 (en) * 2003-11-13 2006-05-16 Ronald James Petracek Exhaust muffler for internal combustion engines
WO2005074437A3 (en) * 2004-01-16 2006-01-19 Flowmaster Inc One-piece end cap for a muffler and method of forming same
WO2005074437A2 (en) * 2004-01-16 2005-08-18 Flowmaster, Inc. One-piece end cap for a muffler and method of forming same
US20050155820A1 (en) * 2004-01-16 2005-07-21 Flugger Ray T. One-piece end cap for a muffler and method of forming same
US20080121456A1 (en) * 2006-09-22 2008-05-29 Roger George Lee Davis Motorcycle Exhaust Assembly and Method of Using Same
US7464787B2 (en) * 2006-09-22 2008-12-16 Davis Jr Roger George Lee Motorcycle exhaust assembly and method of using same
US20090283358A1 (en) * 2008-05-15 2009-11-19 Hughey Christopher Sound-reducing baffle
US20100084220A1 (en) * 2008-10-06 2010-04-08 Zvi Shaya Sound-attenuating muffler having reduced back pressure
US7708115B2 (en) * 2008-10-06 2010-05-04 Zvi Shaya Sound-attenuating muffler having reduced back pressure
US8523974B2 (en) * 2011-08-18 2013-09-03 General Electric Company Filter core for use with pleated filter cartridges
US11220949B2 (en) * 2017-11-08 2022-01-11 Toyota Jidosha Kabushiki Kaisha Exhaust silencer device

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