US20140145483A1 - Column unit for chair - Google Patents

Column unit for chair Download PDF

Info

Publication number
US20140145483A1
US20140145483A1 US14/113,028 US201214113028A US2014145483A1 US 20140145483 A1 US20140145483 A1 US 20140145483A1 US 201214113028 A US201214113028 A US 201214113028A US 2014145483 A1 US2014145483 A1 US 2014145483A1
Authority
US
United States
Prior art keywords
outer pipe
column unit
chair
spindle
pipe
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
US14/113,028
Other languages
English (en)
Inventor
Eun Ha Kim
Ki Cheol Lee
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.)
Samhongsa Co Ltd
Original Assignee
Samhongsa 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 Samhongsa Co Ltd filed Critical Samhongsa Co Ltd
Assigned to SAMHONGSA CO., LTD. reassignment SAMHONGSA CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, EUN HA, LEE, KI CHEOL
Publication of US20140145483A1 publication Critical patent/US20140145483A1/en
Assigned to SAMHONGSA CO., LTD. reassignment SAMHONGSA CO., LTD. CORRECTIVE ASSIGNMENT TO CORRECT THE COUNTRY OF THE ASSIGNEE PREVIOUSLY RECORDED AT REEL: 031936 FRAME: 0307. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Assignors: KIM, EUN HA, LEE, KI CHEOL
Abandoned legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/36—Special sealings, including sealings or guides for piston-rods
    • F16F9/366—Special sealings, including sealings or guides for piston-rods functioning as guide only, e.g. bushings

Definitions

  • the present invention relates to a column unit for a chair in which an inclined part of an outer pipe is directly secured to a chair base to provide a good appearance and diversify design of the chair, and more particularly to a column unit for a chair which has a compact configuration and can improve the durability against a lateral force applied to an axis thereof.
  • a gas cylinder is applied to a height control device of a chair.
  • the gas cylinder as shown in FIGS. 1 a and 1 b, includes an outer pipe 5 ; a spindle assembly 2 inserted within the outer pipe 5 and moved upward or downward when a gas fluid passage of a valve 8 b is changed, in which the exposed end portion of a piston rod 6 provided within the outer pipe 5 is secured to the bottom surface of the outer pipe 5 ; and a spindle guide 4 provided within the upper side of the outer pipe 5 for guiding and supporting the upward or downward movement of the spindle assembly 2 .
  • Operation of the gas cylinder constructed above is as follows. If a button (not shown) is pressed to operate a gas open/close pin 8 connected with the valve 8 b, the gas fluid passage of the valve 8 b is opened. At this time, the gas stored within the spindle assembly 2 is introduced through the fluid passage 2 a of the valve to push a piston 5 a. Hence, the spindle assembly 2 is then raised to move a seating plate of the chair upward. When the button is released at a certain position of the seating plate being moved, the fluid passage 2 a of the valve 8 b is closed to maintain the fixed state of the seating plate.
  • the thickness of the spindle guide 10 i.e., the outer diameter of the spindle guide 10 is further increased as shown in FIG. 2 in order to support the spindle assembly more stably.
  • the upper diameter of the outer pipe 20 is increased. Accordingly, a tapered part L and a linear part T are formed in a certain length at the upper portion of the outer pipe 20 , respectively, and then the linear part T is designed to support the spindle guide 10 .
  • a gas open/close pin 8 As shown in FIGS. 1 a and 1 b, a gas open/close pin 8 , a tapered holder 8 a, a valve 8 b and a fluid passage 2 a are provided within the spindle assembly 2 in the same manner.
  • a spindle guide 4 is inserted within the outer pipe 5 , and a piston 5 a, a piston rod 6 , a cushion cover 6 a and a bearing assembly 6 b may be installed in the outer pipe 5 .
  • the conventional column unit for the chair has a construction in which the spindle guide 4 is installed in the outer pipe 5 with an upper wide part and a lower narrow part, and the spindle assembly 2 is installed along the inner surface of the spindle guide 4 .
  • the spindle guide 4 is secured to the outer pipe 5 through a securing pin 7 (or a spring pin).
  • an outer pipe has a tapered shape from its upper end portion in order to render a stable feeling in its appearance as well as a simple design, in which the outer pipe of the gas cylinder is almost abutted to the base of the chair.
  • the conventional column unit for the chair has drawbacks in that when the user seated in the chair moves forward, rearward, leftward or rightward (at 360° in any direction) as shown in FIG. 1 b, a bending moment is repetitively applied to the column unit, so that the spindle guide 4 connected with the outer pipe through the securing pin 7 is gradually derailed with a lapse of time, thereby disengaging the outer pipe 5 from being fixed.
  • Cited reference 1 Korean Patent Registration No. 10-0687222
  • Cited reference 2 Korean Patent Registration No. 10-0477072
  • an object of the present invention is to provide a column unit for a chair which can construct the column unit with a compact configuration and improve the durability against a lateral force, which refers to a horizontal load applied at 360° in any direction with respect to a vertical axis of the column unit.
  • a column unit for a chair to adjust a height of the chair by moving a spindle assembly upward or downward within the column unit including: a cylindrical outer pipe; a piston rod inserted within the outer pipe so as to provide a gas fluid passage of a valve within the outer pipe, the piston rod having an exposed end portion fixed to a bottom surface of the outer pipe; the spindle assembly being moved upward or downward when the gas fluid passage is changed by the piston rod; a spindle guide provided within an upper side of the outer pipe to guide and support an upward or downward movement of the spindle assembly; and an inner pipe inserted within the outer pipe to define a space between an inclined part of the outer pipe and the inner pipe, wherein the outer pipe has a gradually increasing diameter toward an end portion of the outer pipe so that the outer pipe has the inclined part, and the spindle guide is inserted within the inner pipe to guide the upward or downward movement of the spindle assembly.
  • a column unit for a chair to adjust a height of the chair by moving a spindle assembly upward or downward within the column unit
  • the column unit including: a cylindrical outer pipe; a piston rod inserted within the outer pipe so as to provide a gas fluid passage of a valve within the outer pipe, the piston rod having an exposed end portion fixed to a bottom surface of the outer pipe; and the spindle assembly being moved upward or downward when the gas fluid passage is changed by the piston rod; a spindle guide provided within an upper side of the outer pipe to guide and support an upward or downward movement of the spindle assembly, wherein the outer pipe has a gradually increasing diameter toward an end portion of the outer pipe so that the outer pipe has the inclined part, and the outer pipe is integrally formed with a securing part being curved at its end portion to encompass the end outer peripheral surface of the spindle guide.
  • the outer pipe may have a linear part extending by a predetermined length from the inclined part.
  • the outer pipe is formed with an engagement jaw inside of its end portion, and the end portion of the inner pipe is curved outward to be rested on the engagement jaw.
  • the outer and inner pipes may be secured to each other by pressing their outer surfaces.
  • the inner pipe may be provided with at least one through hole along the outer periphery of its end portion.
  • the inner pipe may be formed with an engagement protrusion on its inside, and the spindle guide is formed with an engagement recess on its outside into which the engagement protrusion is inserted.
  • a column unit for a chair to adjust the height of the chair by moving a spindle assembly upward or downward within the column unit which includes a cylindrical outer pipe, a spindle assembly inserted within the outer pipe and moved upward or downward when the gas fluid passage of a valve is changed in which the exposed end portion of a piston rod provided in the outer pipe is secured to the bottom surface of the outer pipe, and a spindle guide provided within the upper side of the outer pipe for guiding and supporting an upward or downward movement of the spindle assembly, wherein the outer pipe is formed with an inclined part having a gradually increasing diameter toward its end portion, and wherein the outer pipe is integrally formed with a securing part being curved at its end portion to encompass the end outer peripheral surface of the spindle guide.
  • the spindle guide may be formed with at least one engagement step on its outer peripheral surface.
  • the spindle guide may have a seating part circumferentially formed at an upper end portion of the spindle guide, the securing part of the outer pipe being seated in the seating part and the seating part being fixed to the securing part while being engaged with the securing part.
  • the present invention has effects in that the inner and outer pipes are secured to each other by pressing themselves, so as to improve an installation performance, thereby enhancing production efficiency. Moreover, the spindle guide and the inner pipe maintain a parallel and intimately contacted state to uniformly accommodate the load transversely applied thereto, thereby increasing the durability of the device.
  • a tapered part is formed from the upper end portion of the outer pipe, which makes a good appearance when being mounted onto the chair or the chair base and then diversifies the chair design.
  • FIG. 1 a is a sectional view illustrating a construction of a conventional column unit
  • FIG. 1 b is a sectional view illustrating a case when a lateral force is applied to the column unit of FIG. 1 a;
  • FIG. 2 is a sectional view exemplifying the column unit of a conventional gas cylinder
  • FIG. 3 a is a sectional view illustrating a construction of an assembly of a column unit for a chair according to a first embodiment of the present invention
  • FIG. 3 b is a sectional view illustrating the assembly of the column unit for the chair in detail according to the first embodiment of the present invention
  • FIG. 4 a is a sectional view illustrating a construction of an assembly of a column unit for a chair having a long-type taper according to a second embodiment of the present invention
  • FIG. 4 b is a sectional view illustrating the construction of the assembly of the column unit for the chair shown in FIG. 4 a , in which a spindle assembly is removed;
  • FIG. 4 c is a sectional view illustrating the construction of the assembly of the column unit for the chair shown in FIG. 4 b , in which a spindle guide is removed;
  • FIG. 4 d is a sectional view illustrating an outer pipe which is a structural element of the assembly of the column unit for the chair shown in FIG. 4 a;
  • FIG. 5 a is a sectional view illustrating a construction of an assembly of a column unit for a chair having an all-type taper according to a third embodiment of the present invention
  • FIG. 5 b is a sectional view illustrating the construction of the assembly of the column unit for the chair shown in FIG. 5 a , in which a spindle assembly is removed;
  • FIG. 5 c is a sectional view illustrating the construction of the assembly of the column unit for the chair shown in FIG. 5 b , in which a spindle guide is removed;
  • FIG. 5 d is a sectional view illustrating an outer pipe which is a structural element of the assembly of the column unit for the chair shown in FIG. 5 a , in which an upper end of the outer pipe is curled;
  • FIG. 6 is a sectional view illustrating an inner pipe of the assembly of the column unit for the chair according to the embodiments of the present invention.
  • FIG. 7 is a sectional view illustrating an outer pipe of the assembly of the column unit for the chair according to the embodiments of the present invention.
  • FIG. 8 is a side view illustrating a spindle guide of the assembly of the column unit for the chair according to the embodiments of the present invention.
  • FIG. 9 is a sectional view illustrating the spindle guide shown in FIG. 8 ;
  • FIG. 10 a is a sectional view illustrating an assembly of a column unit for a chair according to a fourth embodiment of the present invention.
  • FIG. 10 b is a partially enlarged view illustrating a portion ‘A’ of FIG. 10 a ;
  • FIG. 10 c is a partially enlarged view illustrating a securing part of FIG. 10 a.
  • a column unit for a chair may be applied to a gas cylinder having a gas open/close pin 8 , a tapered holder 8 a, a valve 8 b and a piston 5 a within a spindle assembly 2 .
  • Reference numerals 6 , 6 a, and 6 b indicate a piston rod, a cushion rubber, and a bearing assembly, respectively, which are elements provided in a conventional gas cylinder, so detailed descriptions thereof will be omitted.
  • the column unit for the chair includes an outer pipe 10 , an inner pipe 20 and a spindle guide 30 .
  • the length of the inclined part 12 of the outer pipe 10 may be varied depending on a user's need.
  • it may be provided in the form a long-type taper having a liner part H on its upper end portion, or an all-type taper which is directly inclined from the upper end portion, excluding the linear part H as shown in FIGS. 5 a to 5 d.
  • the inner pipe 20 is formed in a circular shape and provided with a bent portion 21 which is vertically curved outward at its end portion.
  • the bent portion 21 is seated in the engagement jaw 14 of the outer pipe 10 when assembled.
  • an engagement protrusion 22 is obliquely projected inward at the inner end portion of the inner pipe 20 .
  • a plurality of through holes h may be formed at the outer periphery of the bent portion 21 . These through holes h serve as a kind of drainage during a painting process of the column unit, which prevents water from remaining in the column unit to prevent the column unit from being rusted.
  • the inner pipe 20 may be secured to the outer pipe 10 by being pressed against the outer surface of the outer pipe 10 in a state of being inserted within the outer pipe 10 .
  • the pressed area is illustrated as a compressed part 15 .
  • a space 13 is formed between the inclined part 12 of the outer pipe 10 and the outer surface of the inner pipe 20 .
  • the spindle guide 30 includes a head portion 31 and a body portion 32 as shown in FIGS. 8 and 9 .
  • the head portion 31 is formed with a mounting end 31 a to be extended outward, and the mounting end 31 a is installed in close contact with the end portions of the outer pipe 10 and the inner pipe 20 .
  • the engagement protrusion 22 maintains an engagement state within the engagement recesses 33 of the spindle guide 30 , so that the spindle guide 30 cannot be derailed outward when being inserted within the inner pipe 20 .
  • the spindle assembly 2 is inserted within the spindle guide 30 .
  • the inner peripheral surface of the spindle guide 30 and the outer peripheral surface of the spindle assembly 2 maintain a parallel insertion state. Accordingly, even if a load is applied in a lateral direction, i.e., at 360° in any direction with respect to a vertical axis of the column unit, the load will be applied to the entire contact surface between the spindle guide 30 and the spindle assembly 2 , which makes it possible to prevent generation of a load concentration in a local area.
  • the inclined part 12 formed in the outer pipe 10 creates a space 13 between the inner pipe 20 as a cavity to be inserted and seated at a central hole of a chair base, which can minimize loss of materials during a machining process thereof and can be secured to each other by being pressed, thereby improving a production efficiency.
  • the construction of the device can be simplified, which makes it possible to decrease the manufacturing cost and improve the installation efficiency.

Landscapes

  • Chairs Characterized By Structure (AREA)
US14/113,028 2011-04-29 2012-04-25 Column unit for chair Abandoned US20140145483A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR10-2011-0040989 2011-04-29
KR20110040989 2011-04-29
PCT/KR2012/003187 WO2012148167A2 (ko) 2011-04-29 2012-04-25 의자용 칼럼 유니트

Publications (1)

Publication Number Publication Date
US20140145483A1 true US20140145483A1 (en) 2014-05-29

Family

ID=47072900

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/113,028 Abandoned US20140145483A1 (en) 2011-04-29 2012-04-25 Column unit for chair

Country Status (4)

Country Link
US (1) US20140145483A1 (ko)
CN (1) CN103561612B (ko)
DE (1) DE112012001922T5 (ko)
WO (1) WO2012148167A2 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10487901B2 (en) 2017-01-09 2019-11-26 Beijingwest Industries Co., Ltd. Damping strut

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105465258A (zh) * 2014-09-05 2016-04-06 亚德利塑胶工厂股份有限公司 气压棒
CN106499765B (zh) * 2015-09-06 2019-05-10 青岛三弘精密器械有限公司 气缸
CN108397503B (zh) * 2017-02-06 2020-04-14 株式会社万都 一种改进型减震器

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4899969A (en) * 1988-01-28 1990-02-13 Fritz Bauer And Sohne Ohg Lockable elevating mechanism for the continuous adjustment of furniture and guide sleeve for such an elevating mechanism
US4979718A (en) * 1983-07-29 1990-12-25 Suspa Compart Aktiengesellschaft Lockable elevating mechanism for the continuous adjustment of seats, table tops or similar items of furniture
US5377942A (en) * 1990-10-31 1995-01-03 Stabilus Gmbh Column unit
US5443573A (en) * 1992-10-05 1995-08-22 Stabilus Gmbh Guide means for telescoping cylindrical parts and a column unit comprising such guide means
US5497966A (en) * 1992-04-11 1996-03-12 Stabilus Gmbh Column unit, in particular a chair column unit
US5531413A (en) * 1993-04-27 1996-07-02 Suspa Compart Aktiengesellschaft Adjustable-length column for chairs, tables or the like
US5702083A (en) * 1996-04-17 1997-12-30 Lai; Shiang-Hwey Pneumatic cylinder of a pneumatic lever-lift chair, and its assembly process
US6402102B1 (en) * 1999-03-18 2002-06-11 Suspa Holding Gmbh Adjustable length column for chairs and tables and length adjusting element therefor
US6474619B1 (en) * 2001-07-24 2002-11-05 Samhongsa Co., Ltd. Tube guide for a column unit
US6866238B2 (en) * 2002-06-18 2005-03-15 Stabilus Gmbh Furniture pillar
US7059592B2 (en) * 2002-12-31 2006-06-13 Sam Hong Sa Co., Ltd. Gas cylinder
US7306192B2 (en) * 2006-03-14 2007-12-11 Stabilus Gmbh Height-adjustable column
US7673936B2 (en) * 2007-10-25 2010-03-09 Jung Yu Hsu Adjustable bicycle seat assembly

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2206646Y (zh) * 1994-07-19 1995-09-06 嘉馥工业股份有限公司 健身器
KR200226715Y1 (ko) * 2001-01-20 2001-06-15 주식회사삼홍사 의자용 칼럼 유니트
KR100767959B1 (ko) * 2002-07-23 2007-10-17 오카무라 가부시키가이샤 의자
CN2734605Y (zh) * 2003-06-03 2005-10-19 捷安特(中国)有限公司 自行车之把手调整装置
CN1332846C (zh) * 2003-06-03 2007-08-22 捷安特(中国)有限公司 自行车
KR200379956Y1 (ko) * 2004-12-16 2005-03-28 주식회사 삼홍사 가스 실린더
KR100902182B1 (ko) * 2006-06-07 2009-06-10 주식회사 삼홍사 가스 실린더
JP2011052732A (ja) * 2009-08-31 2011-03-17 Hitachi Automotive Systems Ltd シリンダ装置

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4979718A (en) * 1983-07-29 1990-12-25 Suspa Compart Aktiengesellschaft Lockable elevating mechanism for the continuous adjustment of seats, table tops or similar items of furniture
US4899969A (en) * 1988-01-28 1990-02-13 Fritz Bauer And Sohne Ohg Lockable elevating mechanism for the continuous adjustment of furniture and guide sleeve for such an elevating mechanism
US5377942A (en) * 1990-10-31 1995-01-03 Stabilus Gmbh Column unit
US5497966A (en) * 1992-04-11 1996-03-12 Stabilus Gmbh Column unit, in particular a chair column unit
US5443573A (en) * 1992-10-05 1995-08-22 Stabilus Gmbh Guide means for telescoping cylindrical parts and a column unit comprising such guide means
US5531413A (en) * 1993-04-27 1996-07-02 Suspa Compart Aktiengesellschaft Adjustable-length column for chairs, tables or the like
US5702083A (en) * 1996-04-17 1997-12-30 Lai; Shiang-Hwey Pneumatic cylinder of a pneumatic lever-lift chair, and its assembly process
US6402102B1 (en) * 1999-03-18 2002-06-11 Suspa Holding Gmbh Adjustable length column for chairs and tables and length adjusting element therefor
US6474619B1 (en) * 2001-07-24 2002-11-05 Samhongsa Co., Ltd. Tube guide for a column unit
US6866238B2 (en) * 2002-06-18 2005-03-15 Stabilus Gmbh Furniture pillar
US7059592B2 (en) * 2002-12-31 2006-06-13 Sam Hong Sa Co., Ltd. Gas cylinder
US7306192B2 (en) * 2006-03-14 2007-12-11 Stabilus Gmbh Height-adjustable column
US7673936B2 (en) * 2007-10-25 2010-03-09 Jung Yu Hsu Adjustable bicycle seat assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10487901B2 (en) 2017-01-09 2019-11-26 Beijingwest Industries Co., Ltd. Damping strut

Also Published As

Publication number Publication date
CN103561612B (zh) 2016-10-12
CN103561612A (zh) 2014-02-05
WO2012148167A3 (ko) 2013-03-28
DE112012001922T5 (de) 2014-03-20
WO2012148167A2 (ko) 2012-11-01

Similar Documents

Publication Publication Date Title
US20130167323A1 (en) Furniture hinge
US20140145483A1 (en) Column unit for chair
US7980632B2 (en) Armrest for chair
US6299113B1 (en) Telescopic member, cylindrical body and molded body
JP4546983B2 (ja) 高さ調節可能な椅子の支柱
US7690740B2 (en) Pull-out guide system for drawers
JP4691219B2 (ja) キャスターを有する鞄
CN101424090B (zh) 自锁升降杆
JP2005137880A (ja) ヘッドレストのロック溝の構造及びロック溝の成形方法並びにヘッドレストポールの製造方法
US6474619B1 (en) Tube guide for a column unit
US20200085195A1 (en) Chair
CN209351280U (zh) 头枕导引组件和交通工具座椅
US20050194727A1 (en) Length-adjustable gas spring and gas injection method
KR20150000659A (ko) 구리스 차단용 가스 실린더
JP4045294B1 (ja) 自動閉扉蝶番及び両開扉構造
WO2008049836A3 (en) Damping device for anti-seismic structures
US20110037208A1 (en) Gas spring with speed control function
JP2008029563A (ja) 家具の脚体
KR20120122920A (ko) 의자용 칼럼 유니트
KR102267115B1 (ko) 가구용 캐스터 장치
CN201649945U (zh) 家具铰链
JP2021092233A (ja) 支柱構造及び昇降式什器
WO2002052987A1 (en) Shifting system for chair
CN201068890Y (zh) 快速组装的吊扇叶片
KR102052044B1 (ko) 가스 실린더의 스핀들 가이드구조

Legal Events

Date Code Title Description
AS Assignment

Owner name: SAMHONGSA CO., LTD., KOREA, DEMOCRATIC PEOPLE'S RE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KIM, EUN HA;LEE, KI CHEOL;REEL/FRAME:031936/0307

Effective date: 20131111

AS Assignment

Owner name: SAMHONGSA CO., LTD., KOREA, REPUBLIC OF

Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE COUNTRY OF THE ASSIGNEE PREVIOUSLY RECORDED AT REEL: 031936 FRAME: 0307. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT;ASSIGNORS:KIM, EUN HA;LEE, KI CHEOL;REEL/FRAME:034307/0022

Effective date: 20131111

STCB Information on status: application discontinuation

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