US20060254022A1 - Motor assembly and vacuum cleaner having the same - Google Patents

Motor assembly and vacuum cleaner having the same Download PDF

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Publication number
US20060254022A1
US20060254022A1 US11/391,435 US39143506A US2006254022A1 US 20060254022 A1 US20060254022 A1 US 20060254022A1 US 39143506 A US39143506 A US 39143506A US 2006254022 A1 US2006254022 A1 US 2006254022A1
Authority
US
United States
Prior art keywords
air
casing
motor
passing hole
inner casing
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
US11/391,435
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English (en)
Inventor
Hyun-jun Oh
Sung-Cheol Lee
Hwa-Gyu Song
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Gwangju Electronics Co Ltd
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 Samsung Gwangju Electronics Co Ltd filed Critical Samsung Gwangju Electronics Co Ltd
Assigned to SAMSUNG GWANGJU ELECTRONICS CO., LTD. reassignment SAMSUNG GWANGJU ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LEE, SUNG-CHEOL, OH, HYUN-JUN, SONG, HWA-GYU
Publication of US20060254022A1 publication Critical patent/US20060254022A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • F04D29/665—Sound attenuation by means of resonance chambers or interference
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/22—Mountings for motor fan assemblies
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/0081—Means for exhaust-air diffusion; Means for sound or vibration damping

Definitions

  • the present invention relates to a vacuum cleaner, and more particularly, to a motor assembly adapted to reduce a noise generated in a suction motor and a vacuum cleaner having the same.
  • a vacuum cleaner draws in dust using a suction force that is generated as a suction motor is driven. The dust is then collected in a dust-collecting chamber.
  • a cleaner includes a high output motor having a high number of RPMs. However, such a high output motor causes a high level of noise when being driven.
  • Korean Patent Publication No. 1997-32650 describes a motor casing including a noise absorbing member and a noise blocking member, which encloses the noise absorbing member and has perforations formed on a surface thereof.
  • Japanese Patent Publication No. H01-268524 describes a motor casing including a first penetrating hole formed on a side surface thereof, a second penetrating hole formed on a rear surface, and a noise absorbing member formed at the first and the second penetrating hole.
  • the present invention has been developed in order to solve the above described problems in the related art.
  • a first aspect of the invention provides a motor assembly, including: a motor; at least one inner casing adapted to enclose at least a part of the motor; and at least one outer casing configured to enclose at least a part of the at least one inner casing, wherein a diffusion passage is formed between the at least one inner casing and the at least one outer casing and has an average cross-section that gradually increases to allow air to diffuse therein.
  • a vacuum cleaner including: a cleaner body having an air pipe and a discharge pipe; a motor disposed at the cleaner body; at least one inner casing configured to enclose at least a part of the suction motor and to enable fluid communication with the air suction pipe; and at least one outer casing enclosing at least a part of the inner casing and configured to enable fluid communication with the air discharge pipe, wherein a diffusion passage is formed between the at least one inner casing and the at least one outer casing and has an average cross-section that gradually increases to allow the air to diffuse therein.
  • a motor assembly including: at least one motor; at least one first casing configured to enclose at least a part of the at least one motor; at least one second casing configured to enclose at least a part of the at least one first casing; and means for diffusing air.
  • the invention provides a vacuum cleaner, including: a cleaner body; at least one motor disposed of the cleaner body; at least one first casing configured to enclose at least a part of the at least one motor; at least one second casing configured to enclose at least a part of the at least one first casing; and means for diffusing air.
  • FIG. 1 is a perspective view illustrating a motor assembly according to a non-limiting embodiment of the present invention
  • FIG. 2 is a sectional view illustrating a cleaner body having the motor assembly of FIG. 1 mounted therein and a main part of the motor assembly;
  • FIG. 3 is a cross section view of FIG. 2 cut along a line III-III, illustrating the motor assembly and the cleaner body when being viewed from top;
  • FIG. 4 is a graph illustrating change in a cross section of a diffusion passage at points ⁇ circle around ( 1 ) ⁇ , ⁇ circle around ( 2 ) ⁇ , ⁇ circle around ( 3 ) ⁇ , ⁇ circle around ( 4 ) ⁇ , ⁇ circle around ( 5 ) ⁇ , ⁇ circle around ( 6 ) ⁇ , ⁇ circle around ( 7 ) ⁇ , ⁇ circle around ( 8 ) ⁇ of FIG. 3 ;
  • FIG. 5 is a graph illustrating a noise reduction effect achieved by the motor assembly according to a non-limiting embodiment of the present invention.
  • FIG. 6 is a graph illustrating a peak component reduction effect achieved by the motor assembly according to a non-limiting embodiment of the present invention.
  • a motor assembly 100 may include a motor, such as suction motor 110 , an inner casing 120 , and an outer casing 130 .
  • the suction motor 110 may be configured to generate a suction force and may be disposed in a vertical relation to cleaner body 10 .
  • the suction motor 110 may include an air discharge window 110 a formed on a lower circumference thereof to discharge air therethrough. The air, which may be drawn in through a first air passing hole 121 a , may exit from the suction motor 110 through the air discharge window 110 a.
  • the suction motor 110 may include a high output motor capable of generating a high number of revolutions per minute (RPMs). As a result, suction motor 110 may generate vibration.
  • RPMs revolutions per minute
  • a support member 140 may be provided in order to prevent vibration and to support the suction motor 110 in a vertical direction (preferably opposite to the direction of load).
  • the support member 140 may be disposed at a center of the inner casing 120 .
  • the support member 140 may be made of rubber to prevent vibration while supporting the suction motor 110 .
  • the support member 140 may be approximately 20 mm to approximately 40 mm.
  • the inner casing 120 may include a first inner casing 121 and a second inner casing 122 .
  • the first inner casing 121 may be configured to enclose an upper side of the suction motor 110 and may include first air passing hole 121 a to guide the air toward the suction motor 110 .
  • the first air passing hole 121 a may fluidly communicate with a suction pipe 11 .
  • a dust bag (not illustrated), which may serve as a dust collector, and a cyclone dust collecting device (not illustrated) may be provided proximate to the suction pipe 11 . Air separated from dust in the dust collector may flow in through the first air passing hole 121 a after passing through the suction pipe 11 .
  • the second inner casing 122 may be adapted to enclose at least a portion of the lower part of the suction motor 110 that is not enclosed by the first inner casing 121 .
  • the second inner casing 122 may also include a second air passing hole 122 b formed on a circumference thereof to discharge the air to a diffusion passage P 1 .
  • the first and the second inner casings 121 and 122 may be detachably fastened to each other. In this non-limiting embodiment, they are fastened using a first fastener (e.g., a bolt) 20 .
  • a first fastener e.g., a bolt
  • fastening methods such as hinge fastening or force fitting, which are other non-limiting examples considered to be in the scope of the present invention.
  • the outer casing 130 may include a first outer casing 131 and a second outer casing 132 .
  • the first outer casing 131 may be adapted to enclose an upper portion of the second inner casing 122 .
  • the second outer casing 132 may be adapted to enclose at least a part of the lower portion of the second inner casing 122 which is not enclosed by the first outer casing 131 .
  • the first outer casing 131 and the second outer casing 132 may be fastened to each other to form a third air passing hole 130 a to discharge the air from the diffusion passage P 1 (see FIG. 3 ) to an air discharge pipe 12 .
  • the third air passing hole 130 a may be formed on either the first outer casing 131 or the second outer casing 132 , as well as partially in each.
  • the third air passing hole 130 a may be formed opposite to the second air passing hole 122 b . Accordingly, the air exiting through the second air passing hole 122 b may not directly flow into the third air passing hole 130 a . Instead, the air may turn in a circumferential direction along the diffusion passage P 1 and then exit through the third air passing hole 130 a . As such, there may be a change in an air flow direction such that noise can be reduced.
  • the discharge pipe 12 may be disposed adjacent to the third air passing hole 130 a so that the air exiting from the third air passing hole 130 a can be promptly discharged.
  • the first outer casing 131 and the second outer casing 132 may be detachably fastened to each other.
  • a second fastener e.g., a bolt
  • fastening methods such as hinge fastening and force fitting, which are non-limiting examples considered to be within the scope of the present invention.
  • the diffusion passage P 1 may be formed between the inner casing 120 and the outer casing 130 to diffuse the air. More specifically, the diffusion passage P 1 may be a space formed by the outer casing 130 and the inner casing 120 and may have an average cross-section that gradually increases along the air flow direction.
  • FIG. 3 is a cross-sectional view of the motor assembly and the cleaner body viewed from above
  • FIG. 4 is a graph showing the changes in the cross-section of the diffusion passage P 1 at points ⁇ circle around ( 1 ) ⁇ , ⁇ circle around ( 2 ) ⁇ , ⁇ circle around ( 3 ) ⁇ , ⁇ circle around ( 4 ) ⁇ , ⁇ circle around ( 5 ) ⁇ , ⁇ circle around ( 6 ) ⁇ , ⁇ circle around ( 7 ) ⁇ , ⁇ circle around ( 8 ) ⁇ of FIG. 3 .
  • the cross-section of the diffusion passage P 1 irregularly repeats increasing and decreasing from the point ⁇ circle around ( 1 ) ⁇ where the second air passing hole 122 b is located, the points ⁇ circle around ( 2 ) ⁇ , ⁇ circle around ( 3 ) ⁇ , ⁇ circle around ( 4 ) ⁇ , ⁇ circle around ( 5 ) ⁇ where the air flows along the diffusion passage P 1 , the point ⁇ circle around ( 6 ) ⁇ where the third air passing hole 130 a is located, to the points ⁇ circle around ( 7 ) ⁇ , ⁇ circle around ( 8 ) ⁇ where the air exiting form the third air passing hole 130 a is discharged to the air discharge pipe 12 (see FIG.
  • the diffusion passage P 1 may be configured to have the cross-section irregularly repeating increasing and decreasing while having the average cross-section gradually increasing.
  • the air exiting from the air discharge window 110 a of the suction motor 110 diffuses when passing through the diffusion passage P 1 , the third air passing hole 130 a , and the air discharge pipe 12 . As a result, the air has a slow flux. Also, the air exiting from the air discharge window 110 a may be diffused in a circumferential direction and discharged to the diffusion passage P 1 through the second air passing hole 122 b . The air may flow in a circumferential direction in the diffusion passage P 1 while turning, and its flowing direction may change several times when ascending through the third air passing hole 130 a and being discharged from the cleaner body 10 through the air discharge pipe 12 .
  • FIG. 5 is a graph illustrating a noise reduction effect achieved by the motor assembly
  • FIG. 6 is a graph illustrating a peak component reduction effect achieved by the motor assembly.
  • the noise is reduced by approximately 4.8 dBA if the motor assembly 100 is employed, compared to the case that the motor assembly 100 is not employed.
  • the noise is noticeably reduced in a low frequency area (0 ⁇ 2000 Hz).
  • the noise is reduced by approximately 9.0 dBA at the position ‘a’ where the first peak component appears, and reduced by approximately 20 dBA at the position ‘b’ where the second peak component appears, and reduced by approximately 7.0 dBA at the position ‘c’ where the third peak component appears. Accordingly, the peak component is greatly improved if the motor assembly 100 is employed compared to the case that the motor assembly 100 is not employed.
  • the air drawn in through the suction pipe 11 and the first air passing hole 121 a may descend along an inside of the suction motor 110 and may then exit from the suction motor 110 through the air discharge window 110 a.
  • the air discharged from the air discharge window 110 a may be diffused and discharged to the diffusion passage P 1 through the second air passing hole 122 b .
  • the air may flow in a circumferential direction in the diffusion passage P 1 and may then exit from the diffusion passage P 1 through the third air passing hole 130 a .
  • the air exiting through the third air passing hole 130 a may vertically ascend and exit from the air discharge pipe 12 .
  • the air is diffused, and thus has a slow flux and changes in direction while passing through the second air passing hole 122 b , the diffusion passage P 1 , the third air passing hole 130 a , and the air discharge pipe 12 . Accordingly, the overall level of noise can be reduced. Especially, the low frequency band noise and the peak component can be effectively reduced. Accordingly, noise generated while cleaning with the vacuum cleaner is greatly reduced.
  • the motor assembly 100 since the motor assembly 100 has the diffusion passage P 1 formed between the inner casing 120 and the outer casing 130 , without having an extra noise absorbing member, the motor assembly 100 has a simplified configuration and its manufacturing cost is decreased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Suction Cleaners (AREA)
  • Motor Or Generator Frames (AREA)
  • Exhaust Silencers (AREA)
  • Jet Pumps And Other Pumps (AREA)
US11/391,435 2005-05-16 2006-03-29 Motor assembly and vacuum cleaner having the same Abandoned US20060254022A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2005-40917 2005-05-16
KR1020050040917A KR100676318B1 (ko) 2005-05-16 2005-05-16 모터조립체 및 이를 구비한 진공청소기

Publications (1)

Publication Number Publication Date
US20060254022A1 true US20060254022A1 (en) 2006-11-16

Family

ID=36803046

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/391,435 Abandoned US20060254022A1 (en) 2005-05-16 2006-03-29 Motor assembly and vacuum cleaner having the same

Country Status (6)

Country Link
US (1) US20060254022A1 (zh)
EP (1) EP1726244A3 (zh)
KR (1) KR100676318B1 (zh)
CN (1) CN1864615A (zh)
AU (1) AU2006201907A1 (zh)
RU (1) RU2327410C2 (zh)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150129353A1 (en) * 2012-07-04 2015-05-14 Nilfisk-Advance A/S Silencer System For A Vacuum Motor In A Suction Cleaner
US20150128375A1 (en) * 2013-11-11 2015-05-14 NELA RAZVOJNI CENTER d.o.o. PODRUZNICA OTOKI Vacuum cleaner noise and vibration reduction system
CN105615767A (zh) * 2016-01-04 2016-06-01 江苏美的清洁电器股份有限公司 吸尘器
GB2554934A (en) * 2016-10-14 2018-04-18 Tti Macao Commercial Offshore Ltd Surface cleaning apparatus
US10154766B2 (en) 2013-09-24 2018-12-18 Alfred Kärcher SE & Co. KG Cleaning device

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100844130B1 (ko) * 2006-12-06 2008-07-04 삼성광주전자 주식회사 팬 모터용 케이스 조립체
WO2013139833A1 (de) * 2012-03-22 2013-09-26 Alfred Kärcher Gmbh & Co. Kg Saugaggregat und saugmaschine
CN104414587A (zh) * 2013-09-06 2015-03-18 江苏美的春花电器股份有限公司 吸尘器及其进气装置
WO2015032151A1 (zh) * 2013-09-06 2015-03-12 江苏美的春花电器股份有限公司 吸尘器及其进气装置
CN104887152A (zh) * 2014-03-04 2015-09-09 江苏美的春花电器股份有限公司 吸尘器及其电机罩
CN104997463B (zh) * 2014-04-23 2017-07-28 江苏美的清洁电器股份有限公司 用于吸尘器的进气装置和吸尘器
CN106551658A (zh) * 2015-09-25 2017-04-05 江苏美的清洁电器股份有限公司 用于吸尘器的电机罩及具有其的吸尘器
CN106073627A (zh) * 2016-08-16 2016-11-09 江苏美的清洁电器股份有限公司 工具箱式吸尘器
CN107212824A (zh) * 2017-05-15 2017-09-29 意诺科技有限公司 一种清洁设备以及清洁设备的风道结构
CN109199234B (zh) * 2017-06-30 2024-01-12 浙江绍兴苏泊尔生活电器有限公司 电机组件及具有其的除尘装置

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4120616A (en) * 1975-10-06 1978-10-17 Breuer Electric Manufacturing Company Vacuum cleaner-blower assembly with sound absorbing arrangement
US4611365A (en) * 1983-02-12 1986-09-16 Matsushita Electric Industrial Co., Ltd. Vacuum cleaner
US4701975A (en) * 1984-10-09 1987-10-27 National Union Electric Corp. Vacuum cleaner assembly
US5296769A (en) * 1992-01-24 1994-03-22 Electrolux Corporation Air guide assembly for an electric motor and methods of making
US5513417A (en) * 1993-07-19 1996-05-07 Samsung Electronics Co., Ltd. Silencing device for vacuum cleaner
US6003200A (en) * 1997-11-14 1999-12-21 Overhead Door Corporation Powerhead housing assembly for vacuum cleaner
US6069423A (en) * 1999-04-21 2000-05-30 Vita-Mix Corporation Motor cooling and sound absorbing system
US6070289A (en) * 1997-10-27 2000-06-06 Daewoo Electronics Co., Ltd. Low noise vacuum cleaner
US6166462A (en) * 1998-05-04 2000-12-26 Ametek, Inc. Bypass motor/fan assembly having separate working air passages
US20030172490A1 (en) * 2002-03-12 2003-09-18 Matsushita Electric Industrial Co., Ltd. Vacuum cleaner
US20060260091A1 (en) * 2005-05-18 2006-11-23 Hwa-Gyu Song Vacuum cleaner

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4330899A (en) * 1980-04-18 1982-05-25 Shop-Vac Corporation Noise reducing blower motor housing means for vacuum cleaner, or the like
DE3402603A1 (de) * 1984-01-26 1985-08-01 Electrostar Schöttle GmbH & Co, 7313 Reichenbach Staubsauger
JP3047984B2 (ja) * 1990-04-18 2000-06-05 株式会社日立製作所 電気掃除機
KR19980017825A (ko) * 1996-08-31 1998-06-05 배순훈 진공청소기의 모터 장착구조

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4120616A (en) * 1975-10-06 1978-10-17 Breuer Electric Manufacturing Company Vacuum cleaner-blower assembly with sound absorbing arrangement
US4611365A (en) * 1983-02-12 1986-09-16 Matsushita Electric Industrial Co., Ltd. Vacuum cleaner
US4701975A (en) * 1984-10-09 1987-10-27 National Union Electric Corp. Vacuum cleaner assembly
US5296769A (en) * 1992-01-24 1994-03-22 Electrolux Corporation Air guide assembly for an electric motor and methods of making
US5513417A (en) * 1993-07-19 1996-05-07 Samsung Electronics Co., Ltd. Silencing device for vacuum cleaner
US6070289A (en) * 1997-10-27 2000-06-06 Daewoo Electronics Co., Ltd. Low noise vacuum cleaner
US6003200A (en) * 1997-11-14 1999-12-21 Overhead Door Corporation Powerhead housing assembly for vacuum cleaner
US6166462A (en) * 1998-05-04 2000-12-26 Ametek, Inc. Bypass motor/fan assembly having separate working air passages
US6069423A (en) * 1999-04-21 2000-05-30 Vita-Mix Corporation Motor cooling and sound absorbing system
US20030172490A1 (en) * 2002-03-12 2003-09-18 Matsushita Electric Industrial Co., Ltd. Vacuum cleaner
US20060260091A1 (en) * 2005-05-18 2006-11-23 Hwa-Gyu Song Vacuum cleaner

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150129353A1 (en) * 2012-07-04 2015-05-14 Nilfisk-Advance A/S Silencer System For A Vacuum Motor In A Suction Cleaner
US9339160B2 (en) * 2012-07-04 2016-05-17 Nilfisk Advance A/S Silencer system for a vacuum motor in a suction cleaner
US10154766B2 (en) 2013-09-24 2018-12-18 Alfred Kärcher SE & Co. KG Cleaning device
US20150128375A1 (en) * 2013-11-11 2015-05-14 NELA RAZVOJNI CENTER d.o.o. PODRUZNICA OTOKI Vacuum cleaner noise and vibration reduction system
US9693662B2 (en) * 2013-11-11 2017-07-04 NELA rasvojni center d.o.o. Podruznica OTOKI Vacuum cleaner noise and vibration reduction system
CN105615767A (zh) * 2016-01-04 2016-06-01 江苏美的清洁电器股份有限公司 吸尘器
GB2554934A (en) * 2016-10-14 2018-04-18 Tti Macao Commercial Offshore Ltd Surface cleaning apparatus
GB2554934B (en) * 2016-10-14 2022-06-08 Techtronic Floor Care Tech Ltd Surface cleaning apparatus

Also Published As

Publication number Publication date
KR100676318B1 (ko) 2007-01-30
AU2006201907A1 (en) 2006-11-30
RU2006116447A (ru) 2007-12-10
CN1864615A (zh) 2006-11-22
EP1726244A2 (en) 2006-11-29
KR20060118293A (ko) 2006-11-23
EP1726244A3 (en) 2007-11-14
RU2327410C2 (ru) 2008-06-27

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AS Assignment

Owner name: SAMSUNG GWANGJU ELECTRONICS CO., LTD., KOREA, REPU

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:OH, HYUN-JUN;LEE, SUNG-CHEOL;SONG, HWA-GYU;REEL/FRAME:017736/0510

Effective date: 20060320

STCB Information on status: application discontinuation

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