US20020134614A1 - Structure of a muffler at the rear of exhaust pipe - Google Patents

Structure of a muffler at the rear of exhaust pipe Download PDF

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Publication number
US20020134614A1
US20020134614A1 US09/816,618 US81661801A US2002134614A1 US 20020134614 A1 US20020134614 A1 US 20020134614A1 US 81661801 A US81661801 A US 81661801A US 2002134614 A1 US2002134614 A1 US 2002134614A1
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United States
Prior art keywords
pipe
external
rear end
inner pipe
muffler
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.)
Abandoned
Application number
US09/816,618
Inventor
Shun-Lai Chen
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Individual
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Individual
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Priority to US09/816,618 priority Critical patent/US20020134614A1/en
Publication of US20020134614A1 publication Critical patent/US20020134614A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • F01N13/00Exhaust 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
    • F01N13/20Exhaust 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
    • 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
    • F01N1/003Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages
    • F01N1/006Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages comprising at least one perforated tube extending from inlet to outlet of the silencer
    • 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
    • F01N1/24Silencing apparatus characterised by method of silencing by using sound-absorbing materials
    • 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
    • F01N2450/00Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/24Methods or apparatus for fitting, inserting or repairing different elements by bolts, screws, rivets or the like
    • 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
    • F01N2470/00Structure or shape of gas passages, pipes or tubes
    • F01N2470/30Tubes with restrictions, i.e. venturi or the like, e.g. for sucking air or measuring mass flow

Definitions

  • the present invention relates to an improved structure of a muffler at the rear end of an exhaust pipe, more particularly to a muffler comprising a tapered inner pipe inside a tapered conical outer pipe, and further having a tapered sleeve being disposed in the inner pipe proximate to the rear end of the inner pipe to increase the output torque of the engine and reduce the noise, and by the design of a gas-receiving pipe with a French connector being soldered to the front end of the external pipe, and an n-shaped fixing bracket being soldered to the external pipe to provide an easy installation for all sorts of vehicles.
  • the conventional muffler used for the exhaust pipe of vehicles has existing shortcomings or inferior designs. Please refer to FIG. 1 for the prior art mufflers.
  • the inner pipe having silencing holes is disposed inside the outer pipe, and the silencing cotton is being wrapped around the wall of the inner pipe.
  • the shortcoming of this design is not able to enhance the torque of the engine, and since the airflow directly collides on the pipe wall to generate a larger noise.
  • it needs to preinstall by soldering a connecting pipe and positioning bar according to the specification of a specific vehicle model at the front end and external surface of the external pipe. It makes the installation difficult, time-consuming, and waste of labor.
  • the main objective of this invention is to provide an improved structure of a muffler at the rear of the exhaust pipe, which utilizes the coupling of the tapered conical shape of the external pipe and the tapered inner tape and the densely distributed silencing holes on the wall of the inner pipe, in addition to the silencing cotton wrapped around the external side, and a tapered sleeve being installed to the internal rim at the rear end of the inner pipe to form an appropriate backpressure in order to enhance the torque output of the engine.
  • the secondary objective of the present invention is to provide an improved structure of a muffler at the rear of the exhaust pipe, which utilizes a tapered inner pipe and a tapered sleeve at the internal rim proximate to the rear end of the inner pipe to accelerate the airflow.
  • the distance between the inner pipe and the external pipe gradually increases thereby reduce the noise generated by airflow collision on the external pipe.
  • Another objective of the present invention is to provide an improved structure of a muffler at the rear of the exhaust pipe, which uses a design of a gas-receiving pipe with a French connector and an n-shaped bracket located at an appropriate position on the external side at the rear end of the external pipe to facilitate the installation for different types of vehicles.
  • FIG. 1 illustrates the cross-section of the conventional muffler at the rear of the exhaust pipe.
  • FIG. 2 illustrates the three-dimensional appearance of the conventional muffler at the rear of the exhaust pipe.
  • FIG. 3 illustrates the three-dimensional appearance of the muffler at the rear of the exhaust pipe according to the present invention.
  • FIG. 4 is a three-dimensional diagram illustrating a part of the cross-section of the muffler at the rear of the exhaust pipe according to the present invention.
  • FIG. 5 is a three-dimensional diagram illustrating the cross-section of the muffler at the rear of the exhaust pipe according to the present invention.
  • FIG. 6 is a three-dimensional diagram illustrating the installation of a preferred embodiment according to the present invention.
  • FIGS. 4 and 5 Please refer to FIGS. 4 and 5 for an improved structure of a muffle at the rear of the exhaust pipe according to the present invention.
  • the muffler at the rear of the exhaust pipe comprises an external pipe 1 , an inner pipe 2 , a sleeve 3 , a gas-receiving pipe 4 , a decorative lid 5 , and an n-shaped fixing bracket 6 .
  • the detailed structure is described below:
  • the external pipe 1 is a hollow ascending tapered pipe, having a gas-receiving pipe 4 with a French connector 41 soldered to the front end of the external pipe 1 .
  • the internal rim of the external pipe 1 has an opening equal in internal diameter with that of the tapered inner pipe 2 .
  • the wall of the inner pipe 2 has a plurality of densely distributed silencing holes 21 , and a silencing cotton 7 being wrapped around the external edge of the inner pipe 2 .
  • a sleeve 3 having a conical pipe opening 31 is disposed at the internal edge proximate to the rear end of the inner pipe 2 , and the diameter of the opening of the sleeve 3 exactly fits into wall hole at the inner edge surface of the inner pipe 2 .
  • the end of the sleeve 3 slightly passes through the edge surface 11 at the rear end of the external pipe 1 , and a decorative lid 5 covers the rear edge surface 11 of the external pipe 1 .
  • the center of such decorative lid 5 forms a diverging conical hole 51 that exactly fits the rear end of the sleeve 3 into the central conical hole 51 , and an appropriate part of the decorative lid 5 being latched into a ringed groove 52 .
  • the ringed groove 52 has penetrating holes 520 for mounting the rear edge surface 11 of the external pipe 1 to the corresponding position of the soldered nuts 110 by the screws 53 .
  • FIG. 5 Please refer to FIG. 5 for the structural function of the present invention.
  • the airflow will slow down to fill up and then accelerate according to the tapered shape of the inner pipe 2 .
  • the airflow is affected by the tapered end of the sleeve 3 proximate to its rear end opening; it produces an appropriate backpressure to increase the torque output of the engine.
  • the airflow in the inner pipe 2 accelerating in the external pipe 1 with opposite tapered direction can reduce the noise produced by the airflow collision on the external pipe 1 .
  • the assembly of the present invention as shown in FIG. 6 has an n-shaped fixing bracket 6 being soldered to an appropriate position at the rear section proximate to the external side of the external pipe 1 .
  • Such n-shape fixing bracket 6 has a plurality of fixing holes 61 to mount the bar 8 onto the fixing bracket 6 .
  • the gas-receiving pipe 4 having a French connector 41 at the front end of the external pipe can be coupled to different types of connecting pipes 9 . It makes the installation of the present invention much easier, and is unlike the inconvenient prior art technology that needs to solder the fixing bar and connecting pipe 9 to the muffler.
  • the present invention herein overcomes the shortcomings of the conventional mufflers and further complies with the patent application requirements and is submitted to the Patent and Trademark Office for review and granting of the commensurate patent rights.

Abstract

The present invention discloses an improved structure of a muffler at the rear end of an exhaust pipe, mainly comprising a tapered inner pipe inside a tapered conical outer pipe, and a plurality of silencing holes being disposed on the wall of the inner pipe, and a silencing cotton wrappers around and covers the external rim of the inner pipe, and a sleeve being disposed in the inner pipe proximate to the rear end of the inner pipe. The front end of such sleeve is a tapered conical pipe, and the rear end slight extends to the outside of the rear end of the external pipe. A decorative lid covers the rear end surface of the external pipe, and a gas-receiving pipe having a French connector being soldered to the front end of the external pipe, and an n-shaped fixing bracket having a fixing hole on it being soldered to an appropriate position on the external surface of the external pipe proximate to the rear end. The assembly of the foregoing components enables the muffler to increase the output torque of the engine, reduce the noise, and provides an easy installation for all sorts of vehicles.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention [0001]
  • The present invention relates to an improved structure of a muffler at the rear end of an exhaust pipe, more particularly to a muffler comprising a tapered inner pipe inside a tapered conical outer pipe, and further having a tapered sleeve being disposed in the inner pipe proximate to the rear end of the inner pipe to increase the output torque of the engine and reduce the noise, and by the design of a gas-receiving pipe with a French connector being soldered to the front end of the external pipe, and an n-shaped fixing bracket being soldered to the external pipe to provide an easy installation for all sorts of vehicles. [0002]
  • 2. Description of the Related Art [0003]
  • The conventional muffler used for the exhaust pipe of vehicles has existing shortcomings or inferior designs. Please refer to FIG. 1 for the prior art mufflers. The inner pipe having silencing holes is disposed inside the outer pipe, and the silencing cotton is being wrapped around the wall of the inner pipe. However, the shortcoming of this design is not able to enhance the torque of the engine, and since the airflow directly collides on the pipe wall to generate a larger noise. Furthermore, it needs to preinstall by soldering a connecting pipe and positioning bar according to the specification of a specific vehicle model at the front end and external surface of the external pipe. It makes the installation difficult, time-consuming, and waste of labor. [0004]
  • In summation of the above description about the prior art waiting for a breakthrough, the present inventor herein enhances the performance of the conventional structure by performing research and development to increase the torque output of the engine, reduce the noise, and provides easy installation for all sorts of vehicles. [0005]
  • SUMMARY OF THE INVENTION
  • The main objective of this invention is to provide an improved structure of a muffler at the rear of the exhaust pipe, which utilizes the coupling of the tapered conical shape of the external pipe and the tapered inner tape and the densely distributed silencing holes on the wall of the inner pipe, in addition to the silencing cotton wrapped around the external side, and a tapered sleeve being installed to the internal rim at the rear end of the inner pipe to form an appropriate backpressure in order to enhance the torque output of the engine. [0006]
  • The secondary objective of the present invention is to provide an improved structure of a muffler at the rear of the exhaust pipe, which utilizes a tapered inner pipe and a tapered sleeve at the internal rim proximate to the rear end of the inner pipe to accelerate the airflow. The distance between the inner pipe and the external pipe gradually increases thereby reduce the noise generated by airflow collision on the external pipe. [0007]
  • Another objective of the present invention is to provide an improved structure of a muffler at the rear of the exhaust pipe, which uses a design of a gas-receiving pipe with a French connector and an n-shaped bracket located at an appropriate position on the external side at the rear end of the external pipe to facilitate the installation for different types of vehicles. [0008]
  • To make it easier for our examiner to understand the objective of the invention, its structure, innovative features, and its performance, we use a preferred embodiment together with the attached drawings for the detailed description of the invention. [0009]
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • Other objects, features, and advantages of the invention will become apparent from the following detailed description of the preferred but non-limiting embodiment. The description is made with reference to the accompanying drawings, in which: [0010]
  • FIG. 1 illustrates the cross-section of the conventional muffler at the rear of the exhaust pipe. [0011]
  • FIG. 2 illustrates the three-dimensional appearance of the conventional muffler at the rear of the exhaust pipe. [0012]
  • FIG. 3 illustrates the three-dimensional appearance of the muffler at the rear of the exhaust pipe according to the present invention. [0013]
  • FIG. 4 is a three-dimensional diagram illustrating a part of the cross-section of the muffler at the rear of the exhaust pipe according to the present invention. [0014]
  • FIG. 5 is a three-dimensional diagram illustrating the cross-section of the muffler at the rear of the exhaust pipe according to the present invention. [0015]
  • FIG. 6 is a three-dimensional diagram illustrating the installation of a preferred embodiment according to the present invention. [0016]
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Please refer to FIGS. 4 and 5 for an improved structure of a muffle at the rear of the exhaust pipe according to the present invention. The muffler at the rear of the exhaust pipe comprises an [0017] external pipe 1, an inner pipe 2, a sleeve 3, a gas-receiving pipe 4, a decorative lid 5, and an n-shaped fixing bracket 6. The detailed structure is described below:
  • The [0018] external pipe 1 is a hollow ascending tapered pipe, having a gas-receiving pipe 4 with a French connector 41 soldered to the front end of the external pipe 1. The internal rim of the external pipe 1 has an opening equal in internal diameter with that of the tapered inner pipe 2. The wall of the inner pipe 2 has a plurality of densely distributed silencing holes 21, and a silencing cotton 7 being wrapped around the external edge of the inner pipe 2. A sleeve 3 having a conical pipe opening 31 is disposed at the internal edge proximate to the rear end of the inner pipe 2, and the diameter of the opening of the sleeve 3 exactly fits into wall hole at the inner edge surface of the inner pipe 2. The end of the sleeve 3 slightly passes through the edge surface 11 at the rear end of the external pipe 1, and a decorative lid 5 covers the rear edge surface 11 of the external pipe 1. The center of such decorative lid 5 forms a diverging conical hole 51 that exactly fits the rear end of the sleeve 3 into the central conical hole 51, and an appropriate part of the decorative lid 5 being latched into a ringed groove 52. The ringed groove 52 has penetrating holes 520 for mounting the rear edge surface 11 of the external pipe 1 to the corresponding position of the soldered nuts 110 by the screws 53.
  • Please refer to FIG. 5 for the structural function of the present invention. When the waste gas enters the gas-receiving [0019] pipe 4 having a French connector 41 of the inner pipe 2, due to the larger cross-sectional area of the front end opening of the inner pipe 2, the airflow will slow down to fill up and then accelerate according to the tapered shape of the inner pipe 2. The airflow is affected by the tapered end of the sleeve 3 proximate to its rear end opening; it produces an appropriate backpressure to increase the torque output of the engine. Furthermore, the airflow in the inner pipe 2 accelerating in the external pipe 1 with opposite tapered direction can reduce the noise produced by the airflow collision on the external pipe 1.
  • The assembly of the present invention as shown in FIG. 6 has an n-[0020] shaped fixing bracket 6 being soldered to an appropriate position at the rear section proximate to the external side of the external pipe 1. Such n-shape fixing bracket 6 has a plurality of fixing holes 61 to mount the bar 8 onto the fixing bracket 6. The gas-receiving pipe 4 having a French connector 41 at the front end of the external pipe can be coupled to different types of connecting pipes 9. It makes the installation of the present invention much easier, and is unlike the inconvenient prior art technology that needs to solder the fixing bar and connecting pipe 9 to the muffler.
  • In summation of the above description, the present invention herein overcomes the shortcomings of the conventional mufflers and further complies with the patent application requirements and is submitted to the Patent and Trademark Office for review and granting of the commensurate patent rights. [0021]
  • While the invention has been described by way of example and in terms of a preferred embodiment, it is to be understood that the invention is not limited thereto. To the contrary, it is intended to cover various modifications and similar arrangements and procedures, and the scope of the appended claims therefore should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements and procedures. [0022]

Claims (4)

What is claimed is:
1. A muffler structure at the rear end of an exhaust pipe, mainly comprising a converging tapered external pipe disposed in a diverging tapered inner pipe; a plurality of densely distributed silencing holes being disposed on the wall of said inner pipe; a silencing cotton being wrapped around the external edge of the inner pipe; a sleeve being coupling to the internal edge proximate to the rear end of the inner pipe; and a converging tapered conical pipe opening at the front end of said sleeve; and the rear end slightly extends outside the rear edge surface of the external pipe.
2. A muffler structure at the rear end of an exhaust pipe as claimed in claim 1, wherein the front end of said external pipe being mounted to a gas-receiving pipe with a French connector, and the diameter of the opening of the gas-receiving pipe is smaller than the diameter of the opening at the front end of the inner pipe.
3. A muffler structure at the rear end of an exhaust pipe as claimed in claim 1, wherein the external wall of said external pipe proximate to an appropriate position at its rear end being soldered with an n-shaped fixing bracket.
4. A muffler structure at the rear end of an exhaust pipe as claimed in claim 1, wherein the rear edge surface of said external pipe being coupled to a decorative lid, and the center of said decorative lid forming an diverging conical hole, and a ringed groove being disposed in an appropriate depressed position of the decorative lid, and the ringed groove having a penetrating hole, thereby a screw being mounted to the soldered nut at the rear edge of the external pipe.
US09/816,618 2001-03-23 2001-03-23 Structure of a muffler at the rear of exhaust pipe Abandoned US20020134614A1 (en)

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Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030213643A1 (en) * 2002-04-05 2003-11-20 Martin Hirschorn Attenuating power booster
US20060043236A1 (en) * 2004-09-02 2006-03-02 Campbell Thomas A Integrated axially varying engine muffler, and associated methods and systems
JP2007231797A (en) * 2006-02-28 2007-09-13 Matsu Shou:Kk Ornament object for exhaust muffler
US20070227808A1 (en) * 2006-03-29 2007-10-04 Yamaha Hatsudoki Kabushiki Kaisha Vehicle exhaust system
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
US20070246294A1 (en) * 2006-04-24 2007-10-25 Willey Barry A Exhaust noise control for motorcycles
US20080110693A1 (en) * 2006-10-30 2008-05-15 Yamaha Hatsudoki Kabushiki Kaisha Exhaust System for Motorcycle
US20090121101A1 (en) * 2005-05-06 2009-05-14 Emcon Technologies Germany (Augsburg) Gmbh Holder For a Component of an Exhaust Gas System
US20090313982A1 (en) * 2008-06-18 2009-12-24 Yamaha Hatsudoki Kabushiki Kaisha Exhaust system for motorcycle
US20090321181A1 (en) * 2007-02-12 2009-12-31 Ballard Iii Ebbin C Inserts for engine exhaust systems
US20100243371A1 (en) * 2009-03-31 2010-09-30 Honda Motor Co., Ltd. Muffler device for motorcycle
CN102465745A (en) * 2010-11-10 2012-05-23 无锡市胡埭兴宏气源净化设备厂 Silencer
US8256569B1 (en) * 2010-10-04 2012-09-04 Huff Dennis L Exhaust sound attenuation device and method of use
US20120267190A1 (en) * 2011-04-20 2012-10-25 Suzuki Motor Corporation Muffler of internal combustion engine
US8640821B2 (en) * 2012-01-18 2014-02-04 Honda Motor Co., Ltd. Exhaust system of engine
ES2504640R1 (en) * 2012-09-28 2015-01-22 Honda Motor Co., Ltd. Motorcycle type vehicle exhaust system
CN108039167A (en) * 2018-01-16 2018-05-15 江苏华东正大空调设备有限公司 A kind of array type silencer and its processing method
RU2752539C1 (en) * 2020-12-15 2021-07-29 Владимир Викторович Коваленко Noise muffler (nm) (options)
RU2752540C1 (en) * 2020-12-15 2021-07-29 Владимир Викторович Коваленко Noise muffler (nm)
RU208307U1 (en) * 2021-08-02 2021-12-13 федеральное государственное бюджетное образовательное учреждение высшего образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВО "НИУ "МЭИ") Plate silencer
RU211578U1 (en) * 2021-05-04 2022-06-14 Дамир Маратович Бибишев CAR MUFFLER
US11402123B2 (en) * 2017-06-28 2022-08-02 3M Innovative Properties Company Microperforated conduit

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US20060043236A1 (en) * 2004-09-02 2006-03-02 Campbell Thomas A Integrated axially varying engine muffler, and associated methods and systems
US7267297B2 (en) * 2004-09-02 2007-09-11 The Boeing Company Integrated axially varying engine muffler, and associated methods and systems
US20090121101A1 (en) * 2005-05-06 2009-05-14 Emcon Technologies Germany (Augsburg) Gmbh Holder For a Component of an Exhaust Gas System
JP2007231797A (en) * 2006-02-28 2007-09-13 Matsu Shou:Kk Ornament object for exhaust muffler
JP4711186B2 (en) * 2006-02-28 2011-06-29 株式会社マツ・ショウ Decorative body for exhaust muffler
US20070227808A1 (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
US7997383B2 (en) 2006-03-29 2011-08-16 Yamaha Hatsudoki Kabushiki Kaisha Vehicle exhaust system
US20070227809A1 (en) * 2006-03-29 2007-10-04 Yamaha Hatsudoki Kabushiki Kaisha Vehicle exhaust system
US7549510B2 (en) 2006-03-29 2009-06-23 Yamaha Hatsudoki Kabushiki Kaisha Vehicle exhaust system
US20070227811A1 (en) * 2006-03-29 2007-10-04 Yamaha Hatsudoki Kabushiki Kaisha Vehicle exhaust system
US7766123B2 (en) 2006-03-29 2010-08-03 Yamaha Hatsudoki Kabushiki Kaisha Vehicle exhaust system
US20070246294A1 (en) * 2006-04-24 2007-10-25 Willey Barry A Exhaust noise control for motorcycles
US7380638B2 (en) * 2006-04-24 2008-06-03 Willey Barry A Exhaust noise control for motorcycles
US20080110693A1 (en) * 2006-10-30 2008-05-15 Yamaha Hatsudoki Kabushiki Kaisha Exhaust System for Motorcycle
US7779963B2 (en) * 2006-10-30 2010-08-24 Yamaha Hatsudoki Kabushiki Kaisha Exhaust system for motorcycle
US20090321181A1 (en) * 2007-02-12 2009-12-31 Ballard Iii Ebbin C Inserts for engine exhaust systems
US7905321B2 (en) * 2007-02-12 2011-03-15 Ballard Iii Ebbin C Inserts for engine exhaust systems
US20090313982A1 (en) * 2008-06-18 2009-12-24 Yamaha Hatsudoki Kabushiki Kaisha Exhaust system for motorcycle
US8136628B2 (en) * 2008-06-18 2012-03-20 Yamaha Hatsudoki Kabushiki Kaisha Exhaust system for motorcycle
US20100243371A1 (en) * 2009-03-31 2010-09-30 Honda Motor Co., Ltd. Muffler device for motorcycle
AU2010200285B2 (en) * 2009-03-31 2011-09-08 Honda Motor Co., Ltd. Muffler device for motorcycle
US8151932B2 (en) * 2009-03-31 2012-04-10 Honda Motor Co., Ltd Muffler device for motorcycle
US8256569B1 (en) * 2010-10-04 2012-09-04 Huff Dennis L Exhaust sound attenuation device and method of use
CN102465745A (en) * 2010-11-10 2012-05-23 无锡市胡埭兴宏气源净化设备厂 Silencer
US8695754B2 (en) * 2011-04-20 2014-04-15 Suzuki Motor Corporation Muffler of internal combustion engine
US20120267190A1 (en) * 2011-04-20 2012-10-25 Suzuki Motor Corporation Muffler of internal combustion engine
US8640821B2 (en) * 2012-01-18 2014-02-04 Honda Motor Co., Ltd. Exhaust system of engine
ES2504640R1 (en) * 2012-09-28 2015-01-22 Honda Motor Co., Ltd. Motorcycle type vehicle exhaust system
US11402123B2 (en) * 2017-06-28 2022-08-02 3M Innovative Properties Company Microperforated conduit
CN108039167A (en) * 2018-01-16 2018-05-15 江苏华东正大空调设备有限公司 A kind of array type silencer and its processing method
RU2752539C1 (en) * 2020-12-15 2021-07-29 Владимир Викторович Коваленко Noise muffler (nm) (options)
RU2752540C1 (en) * 2020-12-15 2021-07-29 Владимир Викторович Коваленко Noise muffler (nm)
RU211578U1 (en) * 2021-05-04 2022-06-14 Дамир Маратович Бибишев CAR MUFFLER
RU208307U1 (en) * 2021-08-02 2021-12-13 федеральное государственное бюджетное образовательное учреждение высшего образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВО "НИУ "МЭИ") Plate silencer

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