US3232374A - Ceramic coated muffler with liquid flow gaps between partitions and shell - Google Patents

Ceramic coated muffler with liquid flow gaps between partitions and shell Download PDF

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Publication number
US3232374A
US3232374A US301944A US30194463A US3232374A US 3232374 A US3232374 A US 3232374A US 301944 A US301944 A US 301944A US 30194463 A US30194463 A US 30194463A US 3232374 A US3232374 A US 3232374A
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United States
Prior art keywords
shell
partitions
housing member
muffler
liquid flow
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
Application number
US301944A
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English (en)
Inventor
Walter H Powers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Walker Manufacturing Co
Original Assignee
Walker Manufacturing Co
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Filing date
Publication date
Application filed by Walker Manufacturing Co filed Critical Walker Manufacturing Co
Priority to US301944A priority Critical patent/US3232374A/en
Priority to BE645312A priority patent/BE645312A/xx
Application granted granted Critical
Publication of US3232374A publication Critical patent/US3232374A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • 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
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F01N1/026—Annular resonance chambers arranged concentrically to an exhaust passage and communicating with it, e.g. via at least one opening in the exhaust passage
    • 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
    • F01N1/084—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases flowing through the silencer two or more times longitudinally in opposite directions, e.g. using parallel or concentric tubes
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/16—Selection of particular 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/18—Exhaust treating devices having provisions not otherwise provided for for improving rigidity, e.g. by wings, ribs
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/20—Methods or apparatus for fitting, inserting or repairing different elements by mechanical joints, e.g. by deforming housing, tube, baffle plate or parts thereof
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing
    • 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
    • F01N2470/02—Tubes being perforated
    • 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
    • F01N2470/10—Tubes having non-circular cross section
    • 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
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/02—Two or more expansion chambers in series connected by means of tubes
    • F01N2490/06—Two or more expansion chambers in series connected by means of tubes the gases flowing longitudinally from inlet to outlet in opposite directions
    • 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
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/15—Plurality of resonance or dead chambers
    • 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
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/15—Plurality of resonance or dead chambers
    • F01N2490/155—Plurality of resonance or dead chambers being disposed one after the other in flow direction
    • 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
    • F01N2510/00—Surface coverings
    • F01N2510/08—Surface coverings for corrosion prevention
    • 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
    • F01N2530/00—Selection of materials for tubes, chambers or housings
    • F01N2530/26—Multi-layered walls

Definitions

  • either the surface of the shell or the flange is rnodied so that the area of contact is materially reduced and the remaining areas of she-ll and flange in the joint are lopen and capable of being ceramic coated.
  • the metal Contact areas can be used for spotweld connections between ilange and shell.
  • FIGURE 1 is a longitudinal cross section through an automotive mutiler embodying the invention
  • FIG. 2 is a cross sectional along .the line 2--2 of FIG. 1;
  • FIG. 3 is an enlarged view of the structure within the circle 3 of FIG. 2;
  • FIG. 4 is a side elevation taken from the left of FIG. 3;
  • FIG. 5 is a longitudinal cross section through another embodiment ofthe invention.
  • FIG. 6 is a cross sectional along the line 6--6 of FIG. 5;
  • FIG. 7 is an enlarged view of the structure shown in licircle 7 of FIG. 6;
  • FIG. 8 is a longitudinal cross section to still another kembodiment of the invention.
  • FIG. 9 is a cross sectional Ion the line 99 ⁇ of FIG. 8;
  • FIG. 10 is an enlarged View of the structureshown in the circle 10 of FIG. 9;
  • FIG. 14 is a front elevational View of thevembossments shown in FIG. 1'3.
  • FIGS. l4 there is a muler 1 of the type currently used in automotive exhaust systems.
  • 'It comprises an outer shell or housing 3 which is closed at opposite ends by an inlet header S and an outlet header 7. These may be attached to the ends of the shell 3 'by 4suitable means such as the spot welded connections illustrated.
  • spot welded connections illustrated.
  • spot- 3,232,374 Patented Feb. I, 1966 ICC weld connections throughout the dr-awings are indicated by the small xs.
  • the space inside of the shell 3 is divided into a series of chambers by means of three interior transverse partitions 9, 11, and 13. Each of these partitions has an annular peripheral flange which is spot Welded to the shell 3.
  • the partitions divide the casing into chambers 15, 17, 19, and 21.
  • the partitions 9 and 11 have three pairs of aligned flanged openings in which three gas passage tubes are mounted and spot welded, these tubes being the tubes 23, 25, and 27. All of the tubes are perforated, preferably Iouvered, so that pressure (sound) waves in the gas passing through them can expand outwardly into the space surrounding the tubes. In the case of the tubes 23 and 25, such expansion will occur into the lchamber 17 which will act as a high and medium frequency resonator and sound attenuator. In the case of the tube 27, a shell 29 surrounds the louvers and provides two spit chambers 31 and 33 which are of relatively small volume and act to attenuate high frequency sounds and roughness.
  • the inlet header 5 has an inlet bushing 35 mounted in outwardly exending neck 37 and this fits over the inlet end of the tube 27 and inside of the langed opening in partition ⁇ 9.
  • 'Ihe middle tube 25 extends through a flanged opening in partition 13 that is aligned therewith and ts inside of a second tube 41 that is in alignment with it and extends through the neck 43 in the outlet header 7.
  • a short tuning tube 44 ismounted in a hanged opening in the partition 13 and this may be in alignment with the tube 23.
  • the bushing 35 and the outlet tube and bushing 41 each have a pair of D-shaped openings 45 and ⁇ 47 of relatively large size located in them as close as possible to the inside ⁇ face of lthe outlet ⁇ header 5 and the outlet header 7.
  • exhaust gas will enter the inlet bushing 35 and flow -along the tube 27 to the cross-over charnber 19.
  • High frequencies and roughness are silenced in the spit chambers 31 and 33.
  • the gas in chamber 19 can then reverse its direction of ow and pass through the tube 23 to the cross-over chamber 15.
  • the tuning tube 44 and the chamber 21 act las a tuning means to attenuate relatively low ⁇ frequencies .in the gas, being in communication with the gas in chamber 19 and tube 23.
  • the anges 53, 55, and 57 of the partitions 9, 11, and 13, respectively are held in a spaced relationship with respect to the inside Wall of the shell 3 so that there is only a minimum of .actual contact between the anges and shell 3.
  • this is accomplished by providing kuur-led sections or a series of small bumps or dimples in the wall of the shell B in patterns located in alignment with the respective anges. These patterns are shown a 59, 61, and 63.
  • An illustrative size and shape of the small bumps 65 is indicated in FIGS. 2, 3, and 4. They preferably space the partition flanges from the shell by about .080 inch.
  • FIG. 2 In F-IG. 2, six internal drainage openings l69 and '71 are shown in phantom in partition ⁇ 13 since the section line 2 2 was taken to the right of the opening.
  • the openings ⁇ 69 and 71 correspond to the internal drainage openy ings disclosed ink my aforementioned copending applicaltion to provide for drainage and venting of each of the internal chambers during immersion of the muffler ⁇ 1 in coating fluids.
  • the openings are preferably about 1A inch in diameter and may be -located at the positions indicated.
  • the muffler In dip coating, the muffler will be suspended from one end or the other so that the partitions extend ⁇ at a slight angle to the horizontal, whereby the openings of one side will be slightly higher than the openings on the other side, thus permitting proper venting and draining. Since internal drainage and venting will occur to some degree through gaps 67, it is possible to reduce the size and number of holes 69, as shown 'in FIG. 2, and described above, if required for acoustic purposes. In some instances it may be possible to get suiiicient internal venting and drainage Ithrough gaps 6-'7 and eliminate holes 169.
  • FIGS. to 7 show a muffler 101 embodying a modified form of the invention.
  • the various parts of the muffler 101 are substantially identical to those disclosed. in FIGS. 1 to 4 and hence they are identified by the same reference numerals plus 100. A further description of the functional structure and operation of the muffler 101 is therefore not necessary.
  • the knurls are replaced by patterns of longitudinal ribs 173 that are pressed in metal of the shell 103.
  • the ribs are preferably about .080 inch in height and will therefore provide a relatively large cross sectional area of opening in the joint between the anges of the partitions and the shell.
  • the ceramic material will coat the bare metal exposed between the flanges and the shell.
  • FIGS. 8-10 Still another embodiment is shown in FIGS. 8-10 in a mutier 201 which structurally is substantially identical ⁇ to muffler 1 and 101 so that the parts thereof are identified by the same reference numerals in the 200 series.
  • the actual engagement or contact area between the flanges of the partitions and the shell is held to a minimum by means of a series of holes 275 that are pierced in the partition tianges and provided with small necks around the openings which are preferably about l .080 inch in length.
  • the butt ends of the necks will be in contact with the shell and some or all of them can be spot welded to it.
  • the holes 275 are preferably about 1/2 inch in diameter.
  • FIGURES 1l to 13 show a muffler 301 embodying another modied form of the invention.
  • the various parts of the muffler 301 are substantially identical to those disclosed in FIGURES 1 to 4 and hence they are identitied by the same reference numerals plus 300. A further description of the functional structure and operation of the muffler 301 is therefore not necessary.
  • the knurls are replaced by patterns of substantially pyramid shaped embossments 363 that are pressed in the metal of the shell 303. These embossments are preferably about .080 inch in height and will therefore provide a relatively large cross sectional area of opening in the joint between the flanges of the partitions and the shell.
  • the ceramic material will coat the bare metal exposed between the flanges and the shell.
  • the apices 363m of the pyramid shaped embossments 363 are preferably blunted by forming the same of fiat curves to provide areas for spot welding to the flanges of the partitions.
  • each partition tlange engages the shell at circumferentially spaced points. Between these points the partition lianges and shell are spaced so that bare metal on each in the joint is exposed, whereby the ceramic can -coat them to minimize the possibility of subsequent cracking and corrosion.
  • the drainage openings 69 and 71 may also be used in each of the partitions in the mutilers 101, 201 and 301. It is preferable that the two drainage openings 71 at opposite ends of the minor axis be retained in all the partitions of each of the mufers as they will provide a means whereby condensate inside the mufer can slosh back and forth from one chamber to another to be vaporized and carried off in the hotter charnber, su-ch as 15, 17, and 19.
  • a layer of asbestos 375 and a layer of sheet steel 376 around the asbestos be wrapped around the shell 303 to serve as additional insulation and as a means to protect the relatively brittle ceramic coating on the outside of the shell 3.
  • This structure may be employed to advantage in all forms of construction.
  • a protectively coated muffler or the like comprising a lhollow elongated housing member, a transverse partition member inside the housing member dividing it into a plurality of interior chambers, said partition member having a peripheral section for connection to the housing member, first parts of said section being in contact with the housing member and the remaining parts of said section being spaced about 0.080 inch from the housing member to provide for liquid flow between such remaining parts and the housing member, a protective coating upon the spaced facing surfaces of such remaining parts and housing member, and means for rigidly connecting at least some of said first parts to said housing member.
  • one of the members has projections extending toward and engaging the other member to provide said first parts, and the means for afxing the members together comprises spot- Welds formed at the base of at least some of the projections.
  • An automotive exhaust mufller or the like comprising an elongated outer shell, end headers closing the ends of the shell, a transverse partition inside the shell, said transverse partition having an annular flange around its outer periphery in juxtaposition to said shell, means formed at spaced locations around the periphery of said outer shell engaging said flange at spaced locations around its periphery for spacing the remaining portions of said flange from the adjacent surface of said outer shell, said last named means having a height of about 0.080 inch, means rigidly aixing said outer shell to said flange at at least some of the points of engagement between said last named means and said flange, and a protective -coating upon said outer shell, said end header and said transverse partition including the spaced surfaces of said flange and said outer shell.
  • a device as described in claim 2 in which said projections are in the form of substantially pyramid shaped embossrnents with the apices of said embossments being spotwelded to the other member.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
US301944A 1963-08-09 1963-08-09 Ceramic coated muffler with liquid flow gaps between partitions and shell Expired - Lifetime US3232374A (en)

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US301944A US3232374A (en) 1963-08-09 1963-08-09 Ceramic coated muffler with liquid flow gaps between partitions and shell
BE645312A BE645312A (fi) 1963-08-09 1964-03-17

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3388769A (en) * 1966-08-04 1968-06-18 Walker Mfg Co Dual inlet and outlet muffler
US6427802B1 (en) * 1998-05-26 2002-08-06 Sango Co., Ltd. Muffler
US20030150669A1 (en) * 2001-12-21 2003-08-14 Craig Jonathan R. Combined silencer and spark arrester
US20100000821A1 (en) * 2006-08-10 2010-01-07 Woodrow Woods Marine muffler with angularly disposed internal baffle
US20100116585A1 (en) * 2006-08-10 2010-05-13 Woodrow Woods Marine muffler with angularly disposed internal baffle
US20100115964A1 (en) * 2008-11-11 2010-05-13 Rolls-Royce Plc Noise reduction device
US11187135B2 (en) * 2019-06-17 2021-11-30 Tenneco Automotive Operating Company Inc. Vehicle exhaust system

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1608245A (en) * 1924-11-22 1926-11-23 Henry A Schwager Muffler for internal-combustion engines
US2151084A (en) * 1937-04-07 1939-03-21 Floyd E Deremer Silencer
US2251369A (en) * 1939-05-03 1941-08-05 Walker Mfg Co Silencer
US2392989A (en) * 1943-12-17 1946-01-15 Sr Edward Albert Kliewer Engine exhaust muffler
US2825421A (en) * 1953-10-02 1958-03-04 Nelson Muffler Corp Muffler
US2835336A (en) * 1953-07-15 1958-05-20 Oldberg Mfg Company Silencer or muffler
US2950777A (en) * 1956-08-01 1960-08-30 Oldberg Mfg Company Silencer or muffler
US3082841A (en) * 1960-10-28 1963-03-26 Walker Mfg Co Muffler
US3104732A (en) * 1963-09-24 Acoustically treated gas pipe

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3104732A (en) * 1963-09-24 Acoustically treated gas pipe
US1608245A (en) * 1924-11-22 1926-11-23 Henry A Schwager Muffler for internal-combustion engines
US2151084A (en) * 1937-04-07 1939-03-21 Floyd E Deremer Silencer
US2251369A (en) * 1939-05-03 1941-08-05 Walker Mfg Co Silencer
US2392989A (en) * 1943-12-17 1946-01-15 Sr Edward Albert Kliewer Engine exhaust muffler
US2835336A (en) * 1953-07-15 1958-05-20 Oldberg Mfg Company Silencer or muffler
US2825421A (en) * 1953-10-02 1958-03-04 Nelson Muffler Corp Muffler
US2950777A (en) * 1956-08-01 1960-08-30 Oldberg Mfg Company Silencer or muffler
US3082841A (en) * 1960-10-28 1963-03-26 Walker Mfg Co Muffler

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3388769A (en) * 1966-08-04 1968-06-18 Walker Mfg Co Dual inlet and outlet muffler
US6427802B1 (en) * 1998-05-26 2002-08-06 Sango Co., Ltd. Muffler
US20030150669A1 (en) * 2001-12-21 2003-08-14 Craig Jonathan R. Combined silencer and spark arrester
US7191868B2 (en) * 2001-12-27 2007-03-20 F.G. Wilson (Engineering) Ltd Combined silencer and spark arrester
US20100000821A1 (en) * 2006-08-10 2010-01-07 Woodrow Woods Marine muffler with angularly disposed internal baffle
US20100116585A1 (en) * 2006-08-10 2010-05-13 Woodrow Woods Marine muffler with angularly disposed internal baffle
US7905322B2 (en) * 2006-08-10 2011-03-15 Woodrow Woods Marine muffler with angularly disposed internal baffle
US7942238B2 (en) * 2006-08-10 2011-05-17 Woodrow Woods Marine muffler with angularly disposed internal baffle
US20100115964A1 (en) * 2008-11-11 2010-05-13 Rolls-Royce Plc Noise reduction device
US8336316B2 (en) * 2008-11-11 2012-12-25 Rolls-Royce Plc Noise reduction device
US11187135B2 (en) * 2019-06-17 2021-11-30 Tenneco Automotive Operating Company Inc. Vehicle exhaust system
US11725567B2 (en) 2019-06-17 2023-08-15 Tenneco Automotive Operating Company Inc. Vehicle exhaust system

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Publication number Publication date
BE645312A (fi) 1964-07-16

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