US20110126531A1 - Variable muffler - Google Patents

Variable muffler Download PDF

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Publication number
US20110126531A1
US20110126531A1 US12/957,015 US95701510A US2011126531A1 US 20110126531 A1 US20110126531 A1 US 20110126531A1 US 95701510 A US95701510 A US 95701510A US 2011126531 A1 US2011126531 A1 US 2011126531A1
Authority
US
United States
Prior art keywords
chamber
muffler
valve
housing
exhaust gas
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
US12/957,015
Other languages
English (en)
Inventor
Jae Hong Kye
Seung-Jin Moon
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.)
Hyundai Motor Co
Sejong Industrial Co Ltd
Kia Corp
Original Assignee
Hyundai Motor Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hyundai Motor Co filed Critical Hyundai Motor Co
Assigned to SEJONG INDUSTRIAL CO., LTD., HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION reassignment SEJONG INDUSTRIAL CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KYE, JAE HONG, MOON, SEUNG-JIN
Publication of US20110126531A1 publication Critical patent/US20110126531A1/en
Abandoned 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • 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
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • F01N1/161—Silencing apparatus characterised by method of silencing by using movable parts for adjusting resonance or dead chambers or passages to resonance or dead chambers
    • F01N1/163—Silencing apparatus characterised by method of silencing by using movable parts for adjusting resonance or dead chambers or passages to resonance or dead chambers by means of valves
    • 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
    • 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
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • 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
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • F01N1/165—Silencing apparatus characterised by method of silencing by using movable parts for adjusting flow area
    • 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 present invention relates to a variable muffler, more particularly to a variable muffler including a valve capable of controlling a flow rate of exhaust gas in two stages.
  • silence is required at a normal engine speed range, for example at a range of 750 rpm to 2500-3000 rpm, and high output power rather than the silence is required at a high speed range, for example at more than 3000 rpm.
  • the engine noise is generated by exhaust noise from the engine.
  • various mufflers have been disclosed.
  • a muffler including a variable valve that is mounted inside a muffler and reduces exhaust gas pressure has been disclosed.
  • the muffler is mounted such that a variable valve disposed at an outlet of exhaust gas of a communicated pipe in the muffler is supported by an elastic member.
  • variable valve At a normal speed of the engine, because exhaust gas pressure is low, the variable valve is in a state of being closed by elastic force exerted on the variable valve toward a communicating pipe of the elastic member that is higher than the exhaust gas pressure, and exhaust discharged from the muffler outwardly passes through a passage having exhaust gas resistance and thereby the exhaust noise is reduced.
  • Various aspects of the present invention are directed to provide a variable muffler having advantages of precisely controlling a flow rate of exhaust gas in two stages in order to reduce exhaust gas noise.
  • variable muffler may include a housing, a plurality of chambers formed by partitions in the housing, an inlet pipe connected to at least a chamber for flowing exhaust gas into the housing, an outlet pipe connected to at least a chamber for discharging the exhaust gas having flowed into the housing to the exterior, an inner pipe for directly communicating between at least two chambers in the housing so that the exhaust gas of the inlet pipe is communicated to the outlet pipe therethrough, and a variable valve that is disposed downstream of the inner pipe and of which opening amount is continuously adjusted according to pressure of exhaust gas passing through the inner pipe.
  • the variable valve may include a valve body connected to the inner pipe and a plurality of valves hingedly and elastically connected each other sequentially, wherein a first valves of the valves is hingedly and elastically connected to the valve body.
  • the variable valve may include the valve body connected to the inner pipe, a first hinge portion disposed to the valve body, the first valve hingedly connected to the first hinge portion, a second hinge portion disposed to the first valve, and a second valve hingedly connected to the second hinge portion.
  • variable valve may further include a first elastic member which is disposed to the first hinge portion and elastically biases the first valve in a direction, and a second elastic member which is disposed to the second hinge portion and elastically biases the second valve in the direction, wherein an elastic coefficient of the first elastic member is less than an elastic coefficient of the second elastic member.
  • the partition may include first and second partitions disposed within the housing, and the first and second partitions and the housing form first, second, and third chambers, wherein the inlet pipe is communicated with the third chamber through the first chamber, the first partition and the second partition.
  • a first partition penetration hole may be formed to the first partition for communicating the first chamber with the second chamber formed by the first and second partitions, wherein a penetration hole is formed to the outlet pipe for communicating with the second chamber, wherein the second chamber includes a sound absorbent therewithin, and wherein the sound absorbent is made of glass wool material.
  • the outlet pipe may be formed with a “U” shape, wherein the outlet pipe penetrates the first, second, and third chambers at least once, and wherein the outlet pipe penetrates the first chamber, the second chamber, the third chamber, the second chamber, the first chamber, the second chamber and the third chamber sequentially.
  • the inner pipe may be disposed between the first chamber and the third chamber for communicating therebetween.
  • the muffler may control a flow rate of exhaust gas in multiple stages according to engine operation condition, so that exhaust noise may be reduced.
  • FIG. 1 is a top plan view of a variable muffler according to an exemplary embodiment of the present invention.
  • FIG. 2 and FIG. 3 is a perspective view of the variable muffler according to the exemplary embodiment of the present invention.
  • FIG. 4 is a top plan view of the variable muffler according to an exemplary embodiment of the present invention.
  • FIG. 5 shows an operating state of the variable muffler at a low speed range according to the exemplary embodiment of the present invention.
  • FIG. 6 shows an operating state of the variable muffler at a middle speed range according to the exemplary embodiment of the present invention.
  • FIG. 7 shows an operating state of the variable muffler at a high speed range according to the exemplary embodiment of the present invention.
  • FIG. 1 is a top plan view of a variable muffler according to an exemplary embodiment of the present invention
  • FIG. 2 and FIG. 3 is a perspective view of the variable muffler according to the exemplary embodiment of the present invention.
  • FIG. 4 is a top plan view of the variable muffler according to an exemplary embodiment of the present invention and FIG. 5 shows an operating state of the variable muffler at a low speed range according to the exemplary embodiment of the present invention.
  • FIG. 6 shows an operating state of the variable muffler at a middle speed range according to the exemplary embodiment of the present invention
  • FIG. 7 shows an operating state of the variable muffler at a high speed range according to the exemplary embodiment of the present invention.
  • a variable muffler according to an exemplary embodiment of the present invention includes a housing 100 , an inlet pipe 110 , an outlet pipe 120 , an inner pipe 130 disposed within the housing 100 .
  • the inside of the housing 100 is divided into a plural of chambers 101 , 102 , and 103 by partitions 140 including a plurality of holes therein.
  • One end of the inlet pipe 110 is outwardly protruded from the housing 100 , and the other end thereof is formed so that exhaust gas flows into the housing 100 .
  • the inlet pipe 110 is installed in a state of being inserted into the housing 100 so that exhaust gas flowing into the housing 100 is exhausted toward the rear side of the housing 100 .
  • the partition 140 includes a first and second partition 141 and 142 disposed within the housing 100 , and the first and second partition 141 and 142 and the housing 100 form a first, second, and third chamber 101 , 102 , and 103 .
  • the inlet pipe 110 communicates with the third chamber 103 through the first chamber 101 , the first partition 141 and the second partition 142 .
  • a penetration hole 123 is formed to the outlet pipe 120 for communicating with the second chamber 102 .
  • the penetration hole 123 may be a plurality of holes formed to an exterior circumference of the outlet pipe 120 to reduce noise.
  • the second chamber 102 is filled with a sound absorbent 240 .
  • the sound absorbent 240 may be made of glass wool so as to reduce flow noise generated when exhaust gas passes through the second chamber 102 .
  • the inner pipe 130 is disposed to communicate the first chamber 101 with the third chamber 103 .
  • a first partition penetration hole 143 is formed to the first partition 141 to communicate the first chamber 101 with the second chamber 102 .
  • the outlet pipe 120 is formed with a “U” shape.
  • the outlet pipe 120 may penetrate the first, second, and third chamber 101 , 102 , and 103 at least once.
  • the outlet pipe 120 may penetrate the first chamber 101 , the second chamber 102 , the third chamber 103 , the second chamber 102 , the first chamber 101 , the second chamber 102 and the third chamber 103 sequentially.
  • a variable valve 200 is disposed to a downstream side of the inner pipe 130 , which is the inner pipe exit 132 , for controlling stream of exhaust gas.
  • the variable valve 200 as shown in FIG. 4 to in FIG. 7 includes a valve body 201 connected to the inner pipe exit 132 , a first hinge portion 210 disposed to the valve body 201 , a first valve 231 hingedly connected to the first hinge portion 210 , a second hinge portion 220 disposed to the first valve 231 and a second valve 232 hingedly connected to the second hinge portion 220 .
  • the variable valve 200 further may include a first elastic member 211 which is disposed to the first hinge portion 210 and elastically supports the first valve 231 and a second elastic member 222 which is disposed to the second hinge portion 220 and elastically supports the second valve 232 .
  • An elastic coefficient of the first elastic member 211 is less than an elastic coefficient of the second elastic member 222 .
  • displacement of the first valve 231 elastically supported by the first elastic member 211 is greater than that of the second valve 232 supported by the second elastic member 222 .
  • the first and second controlling valves 231 and 232 of the variable valve 200 has an area that is capable of opening or closing one end of the inner pipe 130 , and it is formed with a circular plate shape.
  • an operating state of the variable valve 200 according to engine speed is automatically controlled, so an amount of exhaust gas passing through the chambers 101 , 102 , and 103 of the housing 100 is controlled.
  • An operating state of the variable valve 200 will hereinafter be described according to an operating state of a low speed, a middle speed, and a high speed.
  • variable valve 200 In the case of a low speed, the variable valve 200 is slightly opened for the exhaust to be leaked out, so that the exhaust gas passing through the inlet pipe 110 flows into the first chamber 101 through the third chamber 103 , an inner pipe entrance 131 , the inner pipe 130 and the variable valve 200 and exits through the outlet pipe entrance 121 .
  • the sound absorbent 240 filled within the second chamber 102 may reduce flow noise.
  • the partial exhaust gas flows into the first chamber 101 through the first partition penetration hole 143 and then exits through the outlet pipe entrance 121 and the outlet pipe 120 .
  • variable valve 200 As shown in FIG. 5 , is almost closed (slightly opened).
  • variable valve 200 is almost closed due to elastic force of the first elastic member 211 elastically supporting the first valve 231 .
  • the first valve 231 is opened by pressure exerted on the inside of the inlet pipe 110 , inlet pipe exit 112 , the third chamber 103 and the inner pipe 130 against elastic force of the first elastic member 211 .
  • an angle ⁇ 1 defined by the first valve 231 is maintained the same as an angle ⁇ 2 defined by the second valve 232 .
  • the exhaust gas is then discharged out of the housing 100 through the outlet pipe entrance 121 .
  • the first valve 231 and the second valve 232 are opened by pressure exerted on the inside of the inlet pipe 110 , inlet pipe exit 112 , the third chamber 103 and the inner pipe 130 against elastic force of the first elastic member 211 and the second valve 232 .
  • an angle ⁇ 2 defined by the second valve 232 is higher than an angle ⁇ 1 defined by the first valve 231 .
  • resistance generated in the high speed may be suppressed, so that exhaust gas noise may be reduced.
  • the outlet pipe 120 is relatively formed at length, so that low frequency noise may be reduced effectively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Air-Conditioning For Vehicles (AREA)
US12/957,015 2009-12-02 2010-11-30 Variable muffler Abandoned US20110126531A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020090118713A KR101114394B1 (ko) 2009-12-02 2009-12-02 가변 소음기
KR10-2009-0118713 2009-12-02

Publications (1)

Publication Number Publication Date
US20110126531A1 true US20110126531A1 (en) 2011-06-02

Family

ID=43972674

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/957,015 Abandoned US20110126531A1 (en) 2009-12-02 2010-11-30 Variable muffler

Country Status (4)

Country Link
US (1) US20110126531A1 (zh)
KR (1) KR101114394B1 (zh)
CN (1) CN102086795B (zh)
DE (1) DE102010060925B4 (zh)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103277179A (zh) * 2013-05-27 2013-09-04 柳州五菱汽车有限责任公司 一种汽车消声器
US20140174057A1 (en) * 2012-12-26 2014-06-26 Caterpillar Inc. Exhaust Gas Aftertreatment Module
US8807274B2 (en) 2011-07-08 2014-08-19 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Control device of a motor vehicle
CN105003323A (zh) * 2015-07-27 2015-10-28 邓厚才 带有可变回压消音鼓的汽车排气装置
JP2018132002A (ja) * 2017-02-16 2018-08-23 株式会社三五 消音器の製造方法
CN111075536A (zh) * 2018-10-18 2020-04-28 现代自动车株式会社 用于消声器的可变气门以及具有可变气门的双消声器
US10895181B2 (en) * 2018-03-29 2021-01-19 Hyundai Motor Company Vehicle muffler
JP2022030976A (ja) * 2020-08-07 2022-02-18 株式会社ユタカ技研 バルブ内蔵型消音器
JP2022030977A (ja) * 2020-08-07 2022-02-18 株式会社ユタカ技研 バルブ内蔵型消音器

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101284328B1 (ko) * 2011-12-08 2013-07-08 현대자동차주식회사 차량용 소음기
KR101316133B1 (ko) * 2012-08-10 2013-10-08 현대자동차주식회사 차량용 소음기
CN103821591A (zh) * 2014-03-13 2014-05-28 洛阳理工学院 一种用于城市小型汽车的排气消声器
KR101685487B1 (ko) * 2015-05-06 2016-12-13 현대자동차주식회사 가변밸브
JP6530666B2 (ja) * 2015-07-28 2019-06-12 川崎重工業株式会社 自動二輪車の排気装置
CN106640316B (zh) * 2016-10-14 2019-03-15 上海天纳克排气系统有限公司 消声器
CN106351712B (zh) * 2016-10-14 2018-08-28 上海天纳克排气系统有限公司 消声器
CN106286222B (zh) * 2016-10-27 2019-04-26 黄石东贝电器股份有限公司 排气消音器以及制冷压缩机
EP3557015B1 (en) 2018-04-20 2020-11-04 Volvo Car Corporation Muffler comprising a helmholtz resonator and a vehicle comprising such a muffler
KR20210064664A (ko) 2019-11-26 2021-06-03 현대자동차주식회사 자동차용 소음기
KR102118651B1 (ko) 2019-12-18 2020-06-03 유한회사 우솔산업 가변 소음기

Citations (5)

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Publication number Priority date Publication date Assignee Title
US5783782A (en) * 1996-10-29 1998-07-21 Tenneco Automotive Inc. Multi-chamber muffler with selective sound absorbent material placement
US5971098A (en) * 1993-11-09 1999-10-26 Futaba Industrial Co., Ltd. Muffler for internal combustion engine
US5984045A (en) * 1997-02-14 1999-11-16 Nissan Motor Co., Ltd. Engine exhaust noise suppressor
US20010018995A1 (en) * 2000-03-01 2001-09-06 Masayuki Uegane Exhaust muffler
US20100126799A1 (en) * 2006-08-11 2010-05-27 Toyota Jidosha Kabushiki Kaisha Muffler and engine exhaust apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100398157B1 (ko) * 2001-06-18 2003-09-19 현대자동차주식회사 소음기의 2단 제어 가변밸브
JP4175930B2 (ja) 2003-03-24 2008-11-05 カルソニックカンセイ株式会社 排気制御弁
KR100535478B1 (ko) 2003-09-05 2005-12-07 현대자동차주식회사 가변 머플러
JP2005325820A (ja) 2004-05-17 2005-11-24 Calsonic Kansei Corp 排気制御弁
KR100968726B1 (ko) * 2004-11-18 2010-07-08 현대자동차주식회사 가변 머플러
JP2008255879A (ja) * 2007-04-04 2008-10-23 Nissan Motor Co Ltd 車両用排気音制御方法及び車両用排気音制御装置
KR100948338B1 (ko) 2008-05-14 2010-03-22 심학섭 유체의 정전처리 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5971098A (en) * 1993-11-09 1999-10-26 Futaba Industrial Co., Ltd. Muffler for internal combustion engine
US5783782A (en) * 1996-10-29 1998-07-21 Tenneco Automotive Inc. Multi-chamber muffler with selective sound absorbent material placement
US5984045A (en) * 1997-02-14 1999-11-16 Nissan Motor Co., Ltd. Engine exhaust noise suppressor
US20010018995A1 (en) * 2000-03-01 2001-09-06 Masayuki Uegane Exhaust muffler
US20100126799A1 (en) * 2006-08-11 2010-05-27 Toyota Jidosha Kabushiki Kaisha Muffler and engine exhaust apparatus

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8807274B2 (en) 2011-07-08 2014-08-19 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Control device of a motor vehicle
US20140174057A1 (en) * 2012-12-26 2014-06-26 Caterpillar Inc. Exhaust Gas Aftertreatment Module
US8978369B2 (en) * 2012-12-26 2015-03-17 Caterpillar Inc. Exhaust gas aftertreatment module
US9556781B2 (en) 2012-12-26 2017-01-31 Caterpillar Inc. Exhaust gas aftertreatment module
CN103277179A (zh) * 2013-05-27 2013-09-04 柳州五菱汽车有限责任公司 一种汽车消声器
CN105003323A (zh) * 2015-07-27 2015-10-28 邓厚才 带有可变回压消音鼓的汽车排气装置
JP2018132002A (ja) * 2017-02-16 2018-08-23 株式会社三五 消音器の製造方法
US10895181B2 (en) * 2018-03-29 2021-01-19 Hyundai Motor Company Vehicle muffler
CN111075536A (zh) * 2018-10-18 2020-04-28 现代自动车株式会社 用于消声器的可变气门以及具有可变气门的双消声器
JP2022030976A (ja) * 2020-08-07 2022-02-18 株式会社ユタカ技研 バルブ内蔵型消音器
JP2022030977A (ja) * 2020-08-07 2022-02-18 株式会社ユタカ技研 バルブ内蔵型消音器
JP7216050B2 (ja) 2020-08-07 2023-01-31 株式会社ユタカ技研 バルブ内蔵型消音器
JP7265509B2 (ja) 2020-08-07 2023-04-26 株式会社ユタカ技研 バルブ内蔵型消音器

Also Published As

Publication number Publication date
CN102086795B (zh) 2014-11-26
CN102086795A (zh) 2011-06-08
DE102010060925A1 (de) 2011-06-09
DE102010060925B4 (de) 2024-02-08
KR20110062123A (ko) 2011-06-10
KR101114394B1 (ko) 2012-03-05

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Legal Events

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AS Assignment

Owner name: HYUNDAI MOTOR COMPANY, KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KYE, JAE HONG;MOON, SEUNG-JIN;REEL/FRAME:025727/0761

Effective date: 20110110

Owner name: KIA MOTORS CORPORATION, KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KYE, JAE HONG;MOON, SEUNG-JIN;REEL/FRAME:025727/0761

Effective date: 20110110

Owner name: SEJONG INDUSTRIAL CO., LTD., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KYE, JAE HONG;MOON, SEUNG-JIN;REEL/FRAME:025727/0761

Effective date: 20110110

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION