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US2929462A - Muffler for internal combustion engines - Google Patents

Muffler for internal combustion engines Download PDF

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Publication number
US2929462A
US2929462A US745503A US74550358A US2929462A US 2929462 A US2929462 A US 2929462A US 745503 A US745503 A US 745503A US 74550358 A US74550358 A US 74550358A US 2929462 A US2929462 A US 2929462A
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US
United States
Prior art keywords
shell
muffler
inner shell
outer shell
internal combustion
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
US745503A
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English (en)
Inventor
Nowak Klaus Frederick
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US745503A priority Critical patent/US2929462A/en
Priority to DEN10616U priority patent/DE1884804U/de
Application granted granted Critical
Publication of US2929462A publication Critical patent/US2929462A/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
    • F01N13/20—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 having flared outlets, e.g. of fish-tail shape
    • 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
    • F01N1/24—Silencing apparatus characterised by method of silencing by using sound-absorbing materials

Definitions

  • the objects of the invention are to provide an improved mufiler for internal combustion engines, improved in that it creates less back pressure than known mufilers at any given orifice at the same time it reduces the exhaust noise considerably, is inexpensive to manufacture and can be easily installed and removed.
  • a specific object of the invention is to provide a mufiler wherein the fumes-discharging duct is formed with a portion of abruptly-decreasing diameter, followed (preferably immediately) by a gradually-diverging portion, better to attenuate or reduce noise.
  • Another specific object of the invention is to provide a mufiler wherein sound-absorbing fibrous material is interposed between an inner fumes-discharging duct and an outer spaced shell, the inner duct having perforations to expose the sound-absorbing material.
  • Another specific object of the invention is to provide a muffler made of two telescoped shells which interlock in operative assembled position, without the use of rivets, soldering, welding or other similar means, but which can be disassembled easily when required; the inner shell being formed to define with the outer shell when so assembled, a space in which is received a sleeve of sound-absorbing material of desired thickness.
  • Figure 1 is a part-sectional, part-elevation view of one form of the device
  • Figure 2 is an end view, as seen from right to left in Figure 1;
  • Figure 3 is a fragmentary view of a modified form.
  • the mufiler M is adapted to be operatively connected to the rear end of the tail pipe P leading from the exhaust manifold (not shown).
  • the muffler may be clamped to (or into) the tail pipe in an approved manner.
  • the mufiier comprises an outer shell 10, an inner shell 11, and a sleeve of suitable noise-absorbing material 12 disposed between co-facing portions of the shells.
  • the outer shell is formed with a forward portion 14 of uniform diameter, and a rear portion 15 of gradually-increasing diameter, the rear end of the portion 15 being formed with an inwardly curved flange or rim 16.
  • the forward end of the outer shell is preferably formed with pressed-out protuburances 17 located close to the forward end of the shell.
  • the inner shell 11 is formed with a forward portion 18 of uniform diameter slightly less than the inside diameter of the outer shell 10, followed by a relatively-narrow portion 19 of decreasing diameter to define a throat 20, and then followed by a rear portion 23 of gradually-increasing diameter.
  • the rear end of the inner shell is preferably 2 formed with an outwardly-curved portion forming a lip 33 adapted to engage the inwardly-curved rim 16 of the outer shellwhen both shells are in operative assembled relationship,gas shown in Figure 1. The two shells are in such assembled relationship when the forward edge of the inner shell bears against the protuburances 17.
  • the inner shell is slit longitudinally from its rear end, at least partially, toward the forward end.
  • the inner shell is formed with a number of apertures 21.
  • the noise-absorbing material may be preformed as a sleeve, slit lengthwise so that it can be inserted over the inner shell from right to left as seen in Figure l.
  • the mufiler is easily assembled from its three component parts.
  • the inner shell with sleeve of noise-absorbing material is inserted into the outer shell from left to right, the inner shell being slightly deformed so that it will pass freely through the rear end of the outer shell, until the flange 33 clears the rim 16; then the inner shell is pushed slightly rearwardly to bring the flange 33 in engagement with the inside of the rim 16, and the metal of the outer sleeve pressed in to form the protuburances 17.
  • the outer shell is formed with a rear portion 15A parallel with the forward portion 14A but of increased diameter.
  • the rear end of the portion 23A of the inner sleeve or shell 11A is formed with a lip or rim 33A adapted to engage with the inner face of the portion 15A when both shells are assembled into the mufiler.
  • the inner and outer shells are so held in engagement, as aforesaid, by a rim 16A fitting over the outer shell and under the lip 33A.
  • the rim 16A may be held to the outer shell by any suitable means.
  • a mufiler comprising: telescoped inner and outer shells, said inner shell having, a straight portion adapted at its forward end to be operatively attached to an exhaust pipe from an internal combustion engine, a restricted portion forming a throat rearwardly of said straight portion, and an apertured outwardly-tapered portion rearwardly of said restricted portion; said outer shell having, a straight portion telescoped on the straight portion of said first shell and a portion rearwardly of its straight portion and spaced from said inner shell to provide an annular space; and a sleeve of noise-absorbing material substantially filling the annular space.
  • a mufiier comprising: telescoped inner and outer shells, said inner shell having, a straight portion adapted at its forward end to fit on an exhaust pipe from an in ternal combustion engine, a restricted portion forming a throat immediately rearwardly of said straight portion, and an apertured outwardly-tapered portion immediately rearwardly of said restricted portion; said outer shell having, a straight portion telescoped on the straight portion of said first shell and an outwardly-tapered portion immediately rearwardly of its straight portion and substantially parallel with the rear portion of said inner shell to provide an annular space; and a sleeve of noise-absorbing material substantially filling the annular space.
  • said outer shell being formed with a downwardly-turned rim on its rearward end, engaged by the rear end of said inner shell and determining the rearward displacement of said inner shell within said outer shell.
  • said outer shell being formed with a downwardly-turned rim on its rearward end and formed with inwardly-extending protuburances 7 adjacent to the forward end, and said inner shell engaging 'and said inner shell being formed with an outwardlycuwed lip engaging said rim to determine rearwardly displacement of said inner tube within said outer shell.
  • said outer shell being formed with a curved rim on the rear end and formed aeaama V 4 with inwardly-extending protuburances adjacent its forward end
  • said inner shell being formed with an outwardly-curved lip on its rear end engaging said rim and having its forward end closely adjacent said protuburances so that said inner shell may be retained in assembled operative position within said outer shell.

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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)
US745503A 1958-06-30 1958-06-30 Muffler for internal combustion engines Expired - Lifetime US2929462A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US745503A US2929462A (en) 1958-06-30 1958-06-30 Muffler for internal combustion engines
DEN10616U DE1884804U (de) 1958-06-30 1959-06-24 Schalldaempfer fuer verbrennungsmotore.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US745503A US2929462A (en) 1958-06-30 1958-06-30 Muffler for internal combustion engines

Publications (1)

Publication Number Publication Date
US2929462A true US2929462A (en) 1960-03-22

Family

ID=24996950

Family Applications (1)

Application Number Title Priority Date Filing Date
US745503A Expired - Lifetime US2929462A (en) 1958-06-30 1958-06-30 Muffler for internal combustion engines

Country Status (2)

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US (1) US2929462A (de)
DE (1) DE1884804U (de)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3204723A (en) * 1962-05-08 1965-09-07 Natalie Payne Exhaust muffler with filling of porous ceramic cinders and method of making same
US3328826A (en) * 1965-06-25 1967-07-04 Paul E Amos Combination vacuum cleaner and hassock
US3520270A (en) * 1968-05-29 1970-07-14 Outboard Marine Corp Tuned exhaust gas system for outboard motor
US3792722A (en) * 1972-01-12 1974-02-19 Waterloo Foundry Co Inc Exhaust pipe attachment
US4228868A (en) * 1979-01-08 1980-10-21 Raczuk Richard C Muffler apparatus
US4252212A (en) * 1978-03-08 1981-02-24 Josef Meier Muffler for combustion engines
FR2695430A1 (fr) * 1992-09-08 1994-03-11 Devil Sortie d'échappement à dispositif de post-absorption.
US5471707A (en) * 1993-05-29 1995-12-05 Daewoo Electronics Co., Ltd. Assembly for a vacuum cleaner having a sound-absorbing system
US5499423A (en) * 1993-05-19 1996-03-19 Samsung Electronics Co., Ltd. Noise control apparatus for vacuum cleaner
US5574264A (en) * 1993-08-12 1996-11-12 Calsonic Corporation Active exhaust-noise attenuation muffler
DE29706320U1 (de) * 1997-04-09 1997-06-05 Papcke, Birgit, 81927 München Vorrichtung zur Reduzierung von Geräuschen an Austritten von Druckstrahlströmungen
US6023830A (en) * 1998-06-18 2000-02-15 Dana Corporation Apparatus and method for installing a noise reduction structure within a vehicle driveshaft tube
US6158082A (en) * 1998-03-10 2000-12-12 The Toro Company Portable blower with blower tube noise reduction
EP0968644A3 (de) * 1998-03-10 2001-08-01 The Toro Company Tragbare Blaseinrichtung mit Rauschverminderung
US20030213643A1 (en) * 2002-04-05 2003-11-20 Martin Hirschorn Attenuating power booster
US20050061579A1 (en) * 2003-09-22 2005-03-24 Barth Randolph S. Exhaust gas muffler and flow director
US20050161283A1 (en) * 2004-01-27 2005-07-28 Emler Don R. Vehicle exhaust systems
DE102004030214A1 (de) * 2004-06-22 2006-02-23 Dr.Ing.H.C. F. Porsche Ag Abgasanlage
US20060037811A1 (en) * 2004-08-20 2006-02-23 S & S Cycle, Inc. Muffler assembly
US7472774B1 (en) * 2006-01-27 2009-01-06 Lockheed Martin Corporation Versatile engine muffling system
US20110186379A1 (en) * 2010-02-03 2011-08-04 Rinehart Gerald L Muffler baffle
US11377988B2 (en) * 2019-02-04 2022-07-05 Futaba Industrial Co., Ltd. Tail pipe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1941222A (en) * 1929-12-14 1933-12-26 Sun Oil Co Tube cleaning noise-silencer
US1995071A (en) * 1929-12-02 1935-03-19 Buffalo Pressed Steel Company Silencer
US2342905A (en) * 1934-05-24 1944-02-29 Hoover Co Suction cleaner
US2485392A (en) * 1944-12-13 1949-10-18 Burgess Manning Co Silencer with cloth gas-conducting conduit
FR988370A (fr) * 1949-04-08 1951-08-27 Pot d'échappement
US2613758A (en) * 1948-10-14 1952-10-14 Cullum Douglas Jack Wayth Baffle type muffler with sound absorbing material

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1995071A (en) * 1929-12-02 1935-03-19 Buffalo Pressed Steel Company Silencer
US1941222A (en) * 1929-12-14 1933-12-26 Sun Oil Co Tube cleaning noise-silencer
US2342905A (en) * 1934-05-24 1944-02-29 Hoover Co Suction cleaner
US2485392A (en) * 1944-12-13 1949-10-18 Burgess Manning Co Silencer with cloth gas-conducting conduit
US2613758A (en) * 1948-10-14 1952-10-14 Cullum Douglas Jack Wayth Baffle type muffler with sound absorbing material
FR988370A (fr) * 1949-04-08 1951-08-27 Pot d'échappement

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3204723A (en) * 1962-05-08 1965-09-07 Natalie Payne Exhaust muffler with filling of porous ceramic cinders and method of making same
US3328826A (en) * 1965-06-25 1967-07-04 Paul E Amos Combination vacuum cleaner and hassock
US3520270A (en) * 1968-05-29 1970-07-14 Outboard Marine Corp Tuned exhaust gas system for outboard motor
US3792722A (en) * 1972-01-12 1974-02-19 Waterloo Foundry Co Inc Exhaust pipe attachment
US4252212A (en) * 1978-03-08 1981-02-24 Josef Meier Muffler for combustion engines
US4228868A (en) * 1979-01-08 1980-10-21 Raczuk Richard C Muffler apparatus
FR2695430A1 (fr) * 1992-09-08 1994-03-11 Devil Sortie d'échappement à dispositif de post-absorption.
US5499423A (en) * 1993-05-19 1996-03-19 Samsung Electronics Co., Ltd. Noise control apparatus for vacuum cleaner
US5471707A (en) * 1993-05-29 1995-12-05 Daewoo Electronics Co., Ltd. Assembly for a vacuum cleaner having a sound-absorbing system
US5574264A (en) * 1993-08-12 1996-11-12 Calsonic Corporation Active exhaust-noise attenuation muffler
DE29706320U1 (de) * 1997-04-09 1997-06-05 Papcke, Birgit, 81927 München Vorrichtung zur Reduzierung von Geräuschen an Austritten von Druckstrahlströmungen
US6158082A (en) * 1998-03-10 2000-12-12 The Toro Company Portable blower with blower tube noise reduction
EP0968644A3 (de) * 1998-03-10 2001-08-01 The Toro Company Tragbare Blaseinrichtung mit Rauschverminderung
US6324720B1 (en) 1998-03-10 2001-12-04 The Toro Company Portable blower tube noise reduction
US6023830A (en) * 1998-06-18 2000-02-15 Dana Corporation Apparatus and method for installing a noise reduction structure within a vehicle driveshaft tube
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
US20050061579A1 (en) * 2003-09-22 2005-03-24 Barth Randolph S. Exhaust gas muffler and flow director
US7073625B2 (en) * 2003-09-22 2006-07-11 Barth Randolph S Exhaust gas muffler and flow director
US20050161283A1 (en) * 2004-01-27 2005-07-28 Emler Don R. Vehicle exhaust systems
US7510050B2 (en) * 2004-01-27 2009-03-31 Emler Don R Vehicle exhaust systems
DE102004030214A1 (de) * 2004-06-22 2006-02-23 Dr.Ing.H.C. F. Porsche Ag Abgasanlage
US20060037811A1 (en) * 2004-08-20 2006-02-23 S & S Cycle, Inc. Muffler assembly
US7472774B1 (en) * 2006-01-27 2009-01-06 Lockheed Martin Corporation Versatile engine muffling system
US20110186379A1 (en) * 2010-02-03 2011-08-04 Rinehart Gerald L Muffler baffle
US11377988B2 (en) * 2019-02-04 2022-07-05 Futaba Industrial Co., Ltd. Tail pipe

Also Published As

Publication number Publication date
DE1884804U (de) 1963-12-19

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