US20060101864A1 - Washing machine - Google Patents

Washing machine Download PDF

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Publication number
US20060101864A1
US20060101864A1 US11/226,343 US22634305A US2006101864A1 US 20060101864 A1 US20060101864 A1 US 20060101864A1 US 22634305 A US22634305 A US 22634305A US 2006101864 A1 US2006101864 A1 US 2006101864A1
Authority
US
United States
Prior art keywords
water tub
bearing housing
stator
coupling
tub
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
US11/226,343
Other languages
English (en)
Inventor
Koan Namkung
Myung Kang
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 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 Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Assigned to SAMSUNG ELECTRONICS CO., LTD. reassignment SAMSUNG ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KANG, MYUNG SUN, NAMKUNG, KOAN SEOG
Publication of US20060101864A1 publication Critical patent/US20060101864A1/en
Abandoned legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/304—Arrangements or adaptations of electric motors
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/206—Mounting of motor
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/261—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements
    • D06F37/262—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements made of plastic material, e.g. by injection moulding
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/264—Tubs provided with reinforcing structures, e.g. ribs, inserts, braces
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
    • D06F37/269—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups for the bearing of the rotary receptacle
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields

Definitions

  • the present invention relates to a washing machine and, more particularly, to a washing machine having an improved structure for mounting a bearing housing and a stator of a motor, which are installed in a water tub.
  • washing machines rotate a rotation tub or a pulsator to wash laundry using rotation force of a driving motor, and rotate the rotation tub at high speed to dehydrate the laundry.
  • the driving motor may be connected to a shaft of the rotation tub via a power transmitting device, such as pulleys, belts, or the like, or a direct-coupled driving motor, in which a stator is fixed in a water tub and a stator of the driving motor is directly coupled with a rotation shaft of the washing machine, may be employed.
  • U.S. Pat. No. 6,510,716 discloses a washing machine employing the direct-coupled driving motor.
  • the washing machine of the patent includes a bearing housing installed at a rear side of a water tub to support a rotation shaft, a stator installed in the bearing housing and having coils wound thereon, a rotor rotatably installed outside the stator.
  • the bearing housing is coupled to the water tub by fastening screws, the stator is fixed to the bearing housing by a plurality of fastening screws, the rotor is rotated by its central portion coupled with the rotation shaft connected to the rotation tub.
  • the washing machine of the patent includes a rib protruded from the stator to the bearing housing and having a slope such that the center of the stator is aligned with the center of the bearing housing when coupling the stator with the bearing housing, and a recess corresponding to the rib and formed in the bearing housing.
  • the washing machine has a structure in that the rib and the recess are respectively formed in the stator and the bearing housing by separate manufacturing processes such that the center of the stator is aligned with the center of the bearing housing and the bearing housing is coupled with the water tub by the fastening screws, there are shortcomings such as a large number of parts, a complex manufacturing process, and high manufacturing costs.
  • Illustrative, non-limiting embodiments of the present invention overcome the above disadvantages and other disadvantages not described above. Also, the present invention is not required to overcome the disadvantages described above, and an illustrative, non-limiting embodiment of the present invention may not overcome any of the problems described above.
  • the present invention has been made in view of the above-mentioned problems, and an aspect of the invention is to provide a washing machine having a simplified structure for coupling a bearing housing with a stator and manufactured by a less complex process at low cost.
  • an apparatus consistent with the present invention provides a washing machine including a water tub, a rotation tub installed in the water tub, a rotation shaft extended from the water tub and to the outside of the water tub, a bearing housing installed to the water tub to support the rotation shaft, a driving motor mounted to the outside of the water tub for rotating the rotation shaft, the driving motor having a stator fixed in the bearing housing and a rotor coupled with the rotation shaft, pre-coupling protrusions protruded from the water tub such that the center of the stator is aligned with the center of the rotation shaft to pre-couple the stator when mounting the stator to the bearing housing, and pre-coupling holes formed in the stator to be coupled with the pre-coupling protrusions.
  • the washing machine may further include coupling recesses formed in the outer circumference of the bearing housing to be coupled with the water tub, and coupling steps inserted into the coupling recesses to couple the bearing housing with the water tub, wherein the pre-coupling protrusions are protruded from the coupling steps.
  • the outer circumference of the bearing housing is embedded in the water tub such that the bearing housing is fixed to the water tub when manufacturing the water tub by insert molding, and the coupling steps and the pre-coupling protrusions are integrally formed with the water tub when manufacturing the water tub.
  • the pre-coupling protrusions are protruded from the positions of the water tub adjacent to the circumference of the bearing housing, the outer circumference of the bearing housing is embedded into the water tub such that the bearing housing is fixed to the water tub when manufacturing the water tub by insert molding, and the pre-coupling protrusions are integrally formed with the water tub when manufacturing the water tub.
  • the stator is fixed to the bearing housing by fixing bolts after coupling the pre-coupling protrusions with the pre-coupling holes.
  • FIG. 1 is a sectional view illustrating the structure of a washing machine consistent with an exemplary embodiment of the present invention
  • FIG. 2 is an exploded perspective view illustrating a driving motor of the washing machine consistent with an exemplary embodiment of the present invention
  • FIG. 3 is an exploded perspective view illustrating a stator mounting structure of the driving motor of the washing machine consistent with an exemplary embodiment of the present invention
  • FIG. 4 is a sectional view illustrating the driving motor and the stator mounting structure of the washing machine consistent with an exemplary embodiment of the present invention
  • FIG. 5 is a sectional view illustrating the stator mounting structure of the washing machine consistent with an exemplary embodiment of the present invention separated from the driving motor;
  • FIG. 6 is an exploded perspective view illustrating a stator mounting structure of the driving motor of the washing machine according to another exemplary embodiment of the present invention.
  • FIG. 7 is a sectional view illustrating the driving motor and the stator mounting structure of the washing machine according to another exemplary embodiment of the present invention.
  • the washing machine includes a drum-shaped water tub 11 installed in a main body 10 and storing washing water, and a rotation tub 12 rotatably installed in the drum-shaped water tub 11 , and is a drum type washing machine.
  • the main body 10 has an open inlet 13 formed in the front side of the main body 10 , through which laundry is inserted into the rotation tub 12 , and a door 14 for opening and closing the open inlet 13 is installed to the open inlet 13 .
  • Water supply valves 15 a and 15 b for supplying water and a detergent supply 16 for supplying detergent into the water tub 11 are installed at the upper side of the water tub 11 , and a drain device 17 including a drain pipe 17 a and a drain pump 17 b , for draining the water from the water tub 11 , is installed at the lower side of the water tub 11 .
  • the rear side of the water tub 11 rotatably supports a rotation shaft 18 coupled to the rear center of the rotation tub 12 such that the rotation tub 12 can be rotated in the water tub 11 .
  • the rotation tub 12 has a plurality of penetrating holes 12 a formed in the circumference of the rotation tub 12 such that the washing water can be introduced and discharged.
  • the rotation tub 12 also includes a plurality of lifters 12 b installed on the inner surface of the rotation tub 12 such that the laundry can be raised and dropped when the rotation tub 12 rotates.
  • the rotation shaft 18 for supporting the rotation tub 12 penetrates the rear side of the water tub 11 and extends rearward of the water tub 11 , and a driving motor for rotating the rotation shaft 18 is mounted to the rear side of the water tub 11 .
  • a cylindrical bearing housing 20 is installed to the rear side of the water tub 11 to rotatably support the rotation shaft 18 , and bearings 21 a and 21 b are installed between the bearing housing 20 and the outer surface of the rotation shaft 18 to be spaced apart from each other such that the rotation shaft 18 coupled with the rotation tub 12 is firmly supported when rotating.
  • the water tub 11 is manufactured by injection molding of resin, and the bearing housing 20 , as shown in FIGS. 2 to 4 , is inserted into the water tub 11 when the water tub 11 is injection-molded.
  • the bearing housing 20 is formed with a plurality of coupling recesses 22 in the outer circumference thereof such that the bearing housing 20 is firmly coupled with the water tub 11 . Due to this structure, the structure of the rear side of the water tub 11 is simplified by inserting the bearing housing 20 into a mold when manufacturing the water tub 11 in comparison with the conventional structure and the outer circumference of the bearing housing 20 is firmly fixed in the water tub 11 by being integrally formed with the water tub 11 .
  • a plurality of coupling steps 23 are formed by molten resin entering the coupling recesses 22 when manufacturing the water tub 11 such that the bearing housing 20 is firmly coupled with the water tub 11 .
  • the driving motor 30 mounted to the rear side of the water tub 11 includes a stator 31 fixed to the bearing housing at the rear side of the water tub 11 and a rotor 32 rotatably installed to rotate around the outside of the stator 31 and having a center of the rotor 32 coupled with the rotation shaft 18 .
  • the stator 31 includes a ring-shaped stator frame 311 made of insulating material, a core 312 laminated on the outer circumference of the stator frame 311 , and an exciting coil 313 wound around the core 312 .
  • the stator 31 is fixed to the bearing housing 20 such that the stator frame 311 is fixed to the bearing housing at the rear side of the water tub 11 by a plurality of fixing screws 33 .
  • screw fastening holes 25 and 314 for fastening the fixing screws 33 are respectively formed in the inner circumference of the stator frame 311 and the bearing housing 20 to correspond to each other.
  • the rotor 32 m includes a rotation member having a circular plate 321 coupled with the rotation shaft 18 at the center thereof and a rim 322 provided in the outer circumference of the circular plate 321 and surrounding the outer side of the stator 31 , and a plurality of magnets 323 attached to the inner circumference of the rim 322 of the rotation member.
  • a connecting member 324 coupled with the center of the circular plate 321 is coupled with the rotation shaft 18 in serration-coupling fashion such that the rotor 32 is rotated together with the rotation member.
  • the rotor 32 is rotated by electromagnetic interaction between the stator 31 and the rotor 32 when electric power is applied to the exciting coil 313 of the stator 31 .
  • the driving motor 30 rotates the rotation shaft 18 .
  • the washing machine includes pre-coupling protrusions 41 and pre-coupling holes 42 , which are respectively formed to correspond to each other.
  • the pre-coupling protrusions 41 protrude from the coupling steps 23 , which are formed to enter the coupling recesses 22 of the bearing housing 20 when manufacturing the water tub 11 , to the stator 31 .
  • the pre-coupling holes 42 are formed in the inner circumference of the stator frame 311 of the stator 31 to be coupled with the pre-coupling protrusions 41 .
  • the pre-coupling holes 42 may be penetrating holes for penetrating the stator frame 311 or recesses.
  • the center of the stator 31 is aligned with the center of the bearing housing 20 by the pre-coupling protrusions 41 and the pre-coupling holes 42 and the fixing screws 33 are fastened when installing the stator to the bearing housing 20 , so that the stator 31 is easily installed to an exact position.
  • the pre-coupling protrusions 41 are formed together with the coupling steps 23 of the water tub 11 without need for an additional process when manufacturing the water tub 11 by insert molding.
  • the manufacturing process is simplified and manufacturing costs can be reduced in comparison to the conventional washing machine.
  • FIGS. 6 and 7 illustrate another exemplary embodiment of the pre-coupling protrusions and the pre-coupling holes for installing the stator 31 .
  • the pre-coupling protrusions 43 protrude from the position of the water tub 11 (outside position of the bearing housing 20 ) adjacent to the circumference of the bearing housing 20 and the pre-coupling holes 44 are formed to correspond to the pre-coupling protrusions 43 .
  • the positions of the pre-coupling protrusions 43 and the pre-coupling holes 44 are different from those of the above mentioned embodiment and their effects are substantially the same as those of the above embodiment.
  • the pre-coupling protrusions 43 are formed together with the water tub 11 when manufacturing the water tub 11 so that manufacturing costs can be reduced and the manufacturing process can also be simplified. Since other components and structures of this embodiment are identical to the above embodiment, their description will be omitted.
  • bearing housing and the stator mounting structure of the present invention are employed in a drum type washing machine, it will be understood that the bearing housing and the stator mounting structure of the present invention can be applied to a vertical shaft type washing machine (a pulsator type washing machine).
  • the stator mounting structure of the present invention is simplified in comparison to the conventional stator mounting structure.
  • the manufacturing process is simplified and the manufacturing costs are reduced.
  • the bearing housing is embedded into the water tub when manufacturing the water tub by insert molding, the structure of the washing machine of the present invention is simplified.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Power Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
US11/226,343 2004-11-17 2005-09-15 Washing machine Abandoned US20060101864A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020040094350A KR101022222B1 (ko) 2004-11-17 2004-11-17 세탁기
KR2004-94350 2004-11-17

Publications (1)

Publication Number Publication Date
US20060101864A1 true US20060101864A1 (en) 2006-05-18

Family

ID=35810351

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/226,343 Abandoned US20060101864A1 (en) 2004-11-17 2005-09-15 Washing machine

Country Status (5)

Country Link
US (1) US20060101864A1 (ja)
EP (1) EP1659204A1 (ja)
JP (1) JP4150740B2 (ja)
KR (1) KR101022222B1 (ja)
CN (1) CN1776080A (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110135239A1 (en) * 2009-12-09 2011-06-09 Samsung Electronics Co., Ltd. Bearing housing of washing machine and manufacturing method thereof
US20120144875A1 (en) * 2009-03-20 2012-06-14 Lg Electronics Inc. Laundry processing apparatus
US8950221B2 (en) * 2012-04-03 2015-02-10 General Electric Company Motor assembly for washing machine
WO2018208003A1 (en) * 2017-05-12 2018-11-15 New Motech Co., Ltd. Direct driving apparatus for washing machine
CN109728674A (zh) * 2017-10-27 2019-05-07 青岛海尔滚筒洗衣机有限公司 一种新型dd电机及洗衣机
US20210189623A1 (en) * 2018-07-06 2021-06-24 Lg Electronics Inc. Laundry treatment machine and method for controlling the same

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8499591B2 (en) * 2006-07-20 2013-08-06 Lg Electronics Inc. Drum type laundry machine
PL1914338T3 (pl) * 2006-10-19 2010-05-31 Electrolux Home Products Corp Nv Udoskonalony sposób budowy zespołu bębna/komory pralki
KR20070004508A (ko) * 2006-12-20 2007-01-09 주식회사 대우일렉트로닉스 세탁기
KR200464322Y1 (ko) 2007-09-11 2012-12-28 삼성전자주식회사 드럼세탁기
US8256247B2 (en) * 2007-11-05 2012-09-04 Daewoo Electronics Corporation Washing machine and manufacturing method thereof
EP2217753A4 (en) * 2007-11-05 2012-02-22 Daewoo Electronics Corp WASHING MACHINE AND ASSEMBLY METHOD THEREOF
EP2119819B1 (en) 2008-05-14 2013-04-10 Whirlpool Corporation Washing machine with a direct drive system
KR101644430B1 (ko) * 2009-09-04 2016-08-01 엘지전자 주식회사 세탁기
DE102010044190A1 (de) * 2010-11-19 2012-05-24 BSH Bosch und Siemens Hausgeräte GmbH Laugenbehälter zur Aufnahme einer drehbar gelagerten Wäschetrommel und Wäschebehandlungsmaschine
CN102140752B (zh) * 2011-03-04 2016-06-01 海尔集团公司 一种小型/微型洗衣机电机的固定结构
EP2671997A1 (en) * 2012-06-04 2013-12-11 Electrolux Home Products Corporation N.V. Laundry machine comprising a laundry treatment unit with direct drive arrangement
CN109778497B (zh) * 2017-11-13 2022-07-22 青岛海尔洗涤电器有限公司 一种轴承支撑座及滚筒洗衣机
CN111534975B (zh) * 2020-05-09 2022-08-02 无锡小天鹅电器有限公司 定子、电机和衣物处理设备

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US6510716B1 (en) * 1999-10-19 2003-01-28 Lg Electronics Inc. Structure of driving unit in drum type washing machine
US20040163428A1 (en) * 2002-12-10 2004-08-26 Lg Electronics Inc. Drum type washing machine
US20050127775A1 (en) * 2003-12-10 2005-06-16 Lee Deug H. Outer rotor type motor for drum type washing machine and method for fabricating the same

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DE19546185B4 (de) * 1995-12-11 2010-07-01 BSH Bosch und Siemens Hausgeräte GmbH Antriebsvorrichtung für eine von vorn beschickbare Waschmaschine
DE19726246A1 (de) * 1997-06-20 1998-12-24 Bosch Siemens Hausgeraete Antriebsvorrichtung für eine Waschmaschine
DE19960501A1 (de) * 1999-12-15 2001-06-21 Bsh Bosch Siemens Hausgeraete Laugenbehälter für eine Waschmaschine
KR100774164B1 (ko) 2001-12-18 2007-11-07 엘지전자 주식회사 드럼세탁기의 모터 장착 구조
ES2242470B1 (es) * 2002-11-06 2007-02-01 Bsh Electrodomesticos España, S.A. Cuba de plastico para lavadoras domesticas.
KR20050119270A (ko) * 2004-06-16 2005-12-21 삼성전자주식회사 드럼세탁기

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6510716B1 (en) * 1999-10-19 2003-01-28 Lg Electronics Inc. Structure of driving unit in drum type washing machine
US20040163428A1 (en) * 2002-12-10 2004-08-26 Lg Electronics Inc. Drum type washing machine
US20050127775A1 (en) * 2003-12-10 2005-06-16 Lee Deug H. Outer rotor type motor for drum type washing machine and method for fabricating the same

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120144875A1 (en) * 2009-03-20 2012-06-14 Lg Electronics Inc. Laundry processing apparatus
US9175743B2 (en) * 2009-03-20 2015-11-03 Lg Electronics Inc. Laundry processing apparatus having upper and lower balancers
US20110135239A1 (en) * 2009-12-09 2011-06-09 Samsung Electronics Co., Ltd. Bearing housing of washing machine and manufacturing method thereof
CN102091769A (zh) * 2009-12-09 2011-06-15 三星电子株式会社 洗衣机的轴承座及其制造方法
US8790015B2 (en) * 2009-12-09 2014-07-29 Samsung Electronics Co., Ltd. Bearing housing of washing machine and manufacturing method thereof
EP2332673A3 (en) * 2009-12-09 2017-02-15 Samsung Electronics Co., Ltd. Bearing housing of washing machine and manufacturing method thereof
US8950221B2 (en) * 2012-04-03 2015-02-10 General Electric Company Motor assembly for washing machine
WO2018208003A1 (en) * 2017-05-12 2018-11-15 New Motech Co., Ltd. Direct driving apparatus for washing machine
US11225749B2 (en) 2017-05-12 2022-01-18 New Motech Co., Ltd. Direct driving apparatus for washing machine
US11286608B2 (en) 2017-05-12 2022-03-29 New Motech Co., Ltd. Direct driving apparatus for washing machine
CN109728674A (zh) * 2017-10-27 2019-05-07 青岛海尔滚筒洗衣机有限公司 一种新型dd电机及洗衣机
US20210189623A1 (en) * 2018-07-06 2021-06-24 Lg Electronics Inc. Laundry treatment machine and method for controlling the same

Also Published As

Publication number Publication date
CN1776080A (zh) 2006-05-24
KR101022222B1 (ko) 2011-03-17
JP4150740B2 (ja) 2008-09-17
KR20060055047A (ko) 2006-05-23
JP2006141989A (ja) 2006-06-08
EP1659204A1 (en) 2006-05-24

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AS Assignment

Owner name: SAMSUNG ELECTRONICS CO., LTD., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NAMKUNG, KOAN SEOG;KANG, MYUNG SUN;REEL/FRAME:016994/0399

Effective date: 20050830

STCB Information on status: application discontinuation

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