Eptech Co., Ltd.

Republic of Korea

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        United States 10
        World 8
Date
2026 January 1
2025 November 1
2026 (YTD) 1
2025 2
2024 2
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IPC Class
F25D 23/02 - DoorsCovers 7
E05D 3/16 - Hinges with pins with two or more pins with seven parallel pins and four arms 6
E05D 3/06 - Hinges with pins with two or more pins 5
E05F 3/20 - Closers or openers with braking devices, e.g. checksConstruction of pneumatic or liquid braking devices in hinges 4
D06F 39/14 - Doors or coversSecuring means therefor 2
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Status
Pending 1
Registered / In Force 17
Found results for  patents

1.

DISPLAY DEVICE

      
Application Number KR2024008851
Publication Number 2026/005085
Status In Force
Filing Date 2024-06-26
Publication Date 2026-01-02
Owner
  • LG ELECTRONICS INC. (Republic of Korea)
  • EPTECH CO., LTD. (Republic of Korea)
Inventor
  • Byun, Chun Ho
  • Yoon, Sangho
  • Kwon, Ohkwan

Abstract

Provided is a display device comprising: a main body including a display panel and a back cover covering a back surface of the display panel; and a stand fastened to the back surface of the main body to place the display panel on a floor, wherein the stand includes: a vertical portion extending in a vertical direction; and a link module positioned between the vertical portion and the main body, wherein the link module includes: a pair of link guides including a main axis, a first auxiliary axis, and a second auxiliary axis; a main link having both ends rotatably coupled to the main axis of the pair of link guides; a first auxiliary link having both ends rotatably coupled to the first auxiliary axis of the pair of link guides; and a second auxiliary link having both ends rotatably coupled to the second auxiliary axis of the pair of link guides.

IPC Classes  ?

  • G06F 1/16 - Constructional details or arrangements

2.

Welding cabinet

      
Application Number 29844130
Grant Number D1101008
Status In Force
Filing Date 2022-06-27
First Publication Date 2025-11-04
Grant Date 2025-11-04
Owner LPTech Co., Ltd. (Republic of Korea)
Inventor Seo, Jung Youl

3.

MULTI-JOINT LINK HINGE AND REFRIGERATOR INCLUDING THE SAME

      
Application Number 18907112
Status Pending
Filing Date 2024-10-04
First Publication Date 2025-01-23
Owner
  • LG Electronics Inc. (Republic of Korea)
  • EPTech Co., Ltd. (Republic of Korea)
Inventor
  • Oh, Changseok
  • Byun, Chunho

Abstract

A multi-joint link hinge includes a hinge bracket, a plurality of side portions, a link module, and a door bracket coupled to the link module. The hinge bracket includes a base portion that defines a plurality of screw coupling holes at a vertical surface of the base portion, and a plurality of side portions that extend from the base portion in a horizontal direction and are spaced apart from each other in a vertical direction. The link module includes a plurality of links that are coupled to the plurality of side portions along an axis that extends in the vertical direction, where the plurality of links is disposed between the plurality of side portions.

IPC Classes  ?

  • F25D 23/02 - DoorsCovers
  • E05D 3/16 - Hinges with pins with two or more pins with seven parallel pins and four arms
  • E05D 11/04 - Additional features or accessories of hinges relating to the use of free balls as bearing-surfaces

4.

Multi-joint link hinge and refrigerator having the same

      
Application Number 18426807
Grant Number 12410969
Status In Force
Filing Date 2024-01-30
First Publication Date 2024-05-23
Grant Date 2025-09-09
Owner
  • LG ELECTRONICS INC. (Republic of Korea)
  • EPTECH CO., LTD. (Republic of Korea)
Inventor
  • Oh, Changseok
  • Byun, Chunho

Abstract

A multi-joint link hinge may include hinge bracket provided with a base in which a plurality of screw coupling holes are defined, a plurality of side walls which protrude from the base and are spaced apart from each other in a vertical direction, a plurality of link modules which are vertically arranged between the side portions and axially coupled to the hinge bracket by a rotation shaft, and a door bracket which is axially coupled to each of the plurality of link modules.

IPC Classes  ?

5.

Multi-joint link hinge and refrigerator including the same

      
Application Number 18407160
Grant Number 12449187
Status In Force
Filing Date 2024-01-08
First Publication Date 2024-05-02
Grant Date 2025-10-21
Owner
  • LG Electronics Inc. (Republic of Korea)
  • EPTech Co., Ltd. (Republic of Korea)
Inventor
  • Oh, Changseok
  • Byun, Chunho

Abstract

A multi-joint link hinge includes a hinge bracket, a plurality of links axially coupled to the hinge bracket, and a door bracket coupled to the plurality of links. The hinge bracket includes a base portion that defines a plurality of screw coupling holes at a vertical surface thereof, a plurality of side portions that extend from the base portion in a horizontal direction and are spaced apart from each other in a vertical direction, and a side surface portion that extends from the base portion in the vertical direction and defines a fixing groove. The plurality of links are coupled between the plurality of side portions along an axis that extends in the vertical direction. The multi-joint link hinge is used for a home appliance including refrigerators.

IPC Classes  ?

6.

Multi-joint link hinge and refrigerator including the same

      
Application Number 17339553
Grant Number 12130072
Status In Force
Filing Date 2021-06-04
First Publication Date 2022-02-03
Grant Date 2024-10-29
Owner
  • LG Electronics Inc. (Republic of Korea)
  • EPTech Co., Ltd. (Republic of Korea)
Inventor
  • Oh, Changseok
  • Byun, Chunho

Abstract

A multi-joint link hinge includes a hinge bracket, a plurality of links axially coupled to the hinge bracket, and a door bracket coupled to the plurality of links. The hinge bracket includes a base portion that defines a plurality of screw coupling holes at a vertical surface thereof, a plurality of side portions that extend from the base portion in a horizontal direction and are spaced apart from each other in a vertical direction, and a side surface portion that extends from the base portion in the vertical direction and defines a fixing groove. The plurality of links are coupled between the plurality of side portions along an axis that extends in the vertical direction. The multi-joint link hinge is used for a home appliance including refrigerators.

IPC Classes  ?

7.

ELECTRONIC DEVICE

      
Application Number KR2021008878
Publication Number 2022/025480
Status In Force
Filing Date 2021-07-12
Publication Date 2022-02-03
Owner
  • SAMSUNG ELECTRONICS CO., LTD. (Republic of Korea)
  • EPTECH CO., LTD. (Republic of Korea)
Inventor
  • Seo, Junwon
  • Park, Wangi
  • Byun, Chunho
  • Shin, Hojin
  • Lee, Geonhee
  • Jung, Sanggyu

Abstract

Disclosed is an electronic device employing a multi-joint hinge unit for coupling a door of the electronic device. The electronic device comprises: a main body having a storage space; a door opening and closing the storage space; and a hinge unit coupling the door to the main body so that the door is rotatable with respect to the main body. The hinge unit comprises: a first bracket supported on the main body; a second bracket supported on the door; a link part rotatably coupled between the first bracket and the second bracket; an elastic part provided in the link part and having an elastic force; a cam part provided on the second bracket and having a shape in contact with the elastic part so that the elastic force of the elastic part acts as a closing force or opening force of the door according to the rotation direction of the door; and a cam stopper integrally formed on the second bracket and supporting the cam part to prevent a movement of the cam part due to the elastic force.

IPC Classes  ?

  • E05D 3/16 - Hinges with pins with two or more pins with seven parallel pins and four arms
  • E05F 1/12 - Mechanisms in the shape of hinges or pivots, operated by springs
  • E05D 11/00 - Additional features or accessories of hinges

8.

Multi-joint link hinge and refrigerator having the same

      
Application Number 17320591
Grant Number 11920855
Status In Force
Filing Date 2021-05-14
First Publication Date 2021-11-25
Grant Date 2024-03-05
Owner
  • LG ELECTRONICS INC. (Republic of Korea)
  • EPTech Co., Ltd. (Republic of Korea)
Inventor
  • Oh, Changseok
  • Byun, Chunho

Abstract

A multi-joint link hinge may include hinge bracket provided with a base in which a plurality of screw coupling holes are defined, a plurality of side walls which protrude from the base and are spaced apart from each other in a vertical direction, a plurality of link modules which are vertically arranged between the side portions and axially coupled to the hinge bracket by a rotation shaft, and a door bracket which is axially coupled to each of the plurality of link modules.

IPC Classes  ?

9.

Multi-joint link hinge and refrigerator including the same

      
Application Number 17324470
Grant Number 12140369
Status In Force
Filing Date 2021-05-19
First Publication Date 2021-11-25
Grant Date 2024-11-12
Owner
  • LG Electronics Inc. (Republic of Korea)
  • EPTech Co., Ltd. (Republic of Korea)
Inventor
  • Oh, Changseok
  • Byun, Chunho

Abstract

A multi-joint link hinge includes a hinge bracket, a plurality of side portions, a link module, and a door bracket coupled to the link module. The hinge bracket includes a base portion that defines a plurality of screw coupling holes at a vertical surface of the base portion, and a plurality of side portions that extend from the base portion in a horizontal direction and are spaced apart from each other in a vertical direction. The link module includes a plurality of links that are coupled to the plurality of side portions along an axis that extends in the vertical direction, where the plurality of links is disposed between the plurality of side portions.

IPC Classes  ?

  • F25D 23/02 - DoorsCovers
  • E05D 3/16 - Hinges with pins with two or more pins with seven parallel pins and four arms
  • E05D 11/04 - Additional features or accessories of hinges relating to the use of free balls as bearing-surfaces

10.

Multi-link hinge device

      
Application Number 15733969
Grant Number 11319740
Status In Force
Filing Date 2019-02-18
First Publication Date 2021-08-05
Grant Date 2022-05-03
Owner EPTECH CO., LTD. (Republic of Korea)
Inventor Byun, Chun Ho

Abstract

The present invention discloses a multi-link hinge device, wherein the multi-link hinge device includes a bottom lever installed on a main body of a member with a door and having a first bottom fastening hole and a second bottom fastening hole formed to be spaced apart from an end side; a top lever installed on the door of the main body and having a first top fastening hole and a second top fastening hole spaced apart from each other; a body lever having one end pivotally connected to the first bottom fastening hole and having a first body fastening hole formed at the other end and a second body fastening hole formed inside; a first link pivotally connected to the first top fastening hole and the first body fastening hole; a second link pivotally connected to the second top fastening hole and the second body fastening hole, and having a link central fastening hole formed inside; a third link pivotally connected to the link central fastening hole and the second bottom fastening hole; and a rocker arm that is pivotally connected to the first link and guides the door to move to a closing position selectively by elasticity when the top lever for opening and closing the door is operated; wherein the top lever includes a latching member that is rotatably provided so as to be selectively latch-positioned on an elastic action section formed on the rocker arm, and receives an elastic force from an elastic member provided on the rocker arm to guide the door to elastically move along the elastic action section.

IPC Classes  ?

  • E05F 3/20 - Closers or openers with braking devices, e.g. checksConstruction of pneumatic or liquid braking devices in hinges
  • E05D 3/16 - Hinges with pins with two or more pins with seven parallel pins and four arms
  • E05D 11/10 - Devices for preventing movement between relatively-movable hinge parts

11.

MULTI-LINK HINGE DEVICE

      
Application Number KR2019001899
Publication Number 2020/105805
Status In Force
Filing Date 2019-02-18
Publication Date 2020-05-28
Owner EPTECH CO., LTD. (Republic of Korea)
Inventor Byun, Chun Ho

Abstract

The present invention comprises: a bottom lever installed on a main body of a member, the main body being provided with a door, and having a first bottom fastening hole and a second bottom fastening hole that are formed spaced apart from each other at the ends thereof; a top lever installed on the door of the main body, and having a first top fastening hole and a second top fastening hole that are spaced apart from each other; a body lever having one side end pivotally connected to the first bottom fastening hole, and having a first body fastening hole formed at an opposite side end thereof and a second body fastening hole formed therein; a first link pivotally connected to the first top fastening hole and the first body fastening hole; a second link pivotally connected to the second top fastening hole and the second body fastening hole, and having a link center fastening hole formed therein; a third link pivotally connected to the link center fastening hole and the second bottom fastening hole; and a locker arm pivotally connected to the first link, and selectively guiding the door to move to a closing position by elasticity during an operation of the top lever for opening and closing the door, wherein the top lever includes a locking member which is rotatably provided so as to be selectively locked to an elastic action section formed on the locker arm and which receives an elastic force from an elastic member provided on the locker arm to guide the door to be elastically movable along the elastic action section.

IPC Classes  ?

  • E05D 3/06 - Hinges with pins with two or more pins
  • E05F 3/20 - Closers or openers with braking devices, e.g. checksConstruction of pneumatic or liquid braking devices in hinges
  • E05F 1/10 - Closers or openers for wings, not otherwise provided for in this subclass spring-actuated for swinging wings
  • E05D 5/02 - Parts for attachment, e.g. flaps

12.

Multi-link hinge device

      
Application Number 16657034
Grant Number 10876335
Status In Force
Filing Date 2019-10-18
First Publication Date 2020-04-30
Grant Date 2020-12-29
Owner
  • Chun ho Byun (Republic of Korea)
  • EPTECH CO., LTD. (Republic of Korea)
Inventor Byun, Chun Ho

Abstract

An embodiment of the present invention provides a multi-link hinge device in which any one of a plurality of links connecting a plurality of levers to each other may serve as a link and at the same time serve as a cover, thereby preventing a finger or the like from being caught in a space between the plurality of levers in advance when the door is opened or closed.

IPC Classes  ?

  • E05D 11/00 - Additional features or accessories of hinges
  • E05D 3/16 - Hinges with pins with two or more pins with seven parallel pins and four arms
  • E05F 3/20 - Closers or openers with braking devices, e.g. checksConstruction of pneumatic or liquid braking devices in hinges

13.

Hinge device for washing machine door

      
Application Number 16343608
Grant Number 10941600
Status In Force
Filing Date 2017-10-24
First Publication Date 2020-02-27
Grant Date 2021-03-09
Owner EPTECH CO., LTD. (Republic of Korea)
Inventor Byun, Yong Kun

Abstract

A hinge device connecting a door rotatably to a washing machine main body, which enables the door to be closed smoothly and slowly, and to be opened easily.

IPC Classes  ?

  • E05F 3/20 - Closers or openers with braking devices, e.g. checksConstruction of pneumatic or liquid braking devices in hinges
  • E05F 3/10 - Closers or openers with braking devices, e.g. checksConstruction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
  • D06F 39/14 - Doors or coversSecuring means therefor

14.

SOFT MULTISTAGE DAMPER DEVICE

      
Application Number KR2018005318
Publication Number 2018/208080
Status In Force
Filing Date 2018-05-09
Publication Date 2018-11-15
Owner EPTECH CO., LTD. (Republic of Korea)
Inventor Byun, Yong Geun

Abstract

The present invention relates to a soft multistage damper device characterized by comprising: a fixed housing (10) comprising a fixed housing body (11) having a main guide hole (12) formed therein to be open forward, a stepped portion (13) formed on the inner peripheral surface of the main guide hole (12), and a fixed end (14) coupled to the rear side of the fixed housing body (11) so as to close the main guide hole (12); a movable housing (20) comprising a movable housing body (21) which is fitted into the main guide hole (12) so as to move forward or backward, and which has a sub guide hole (22) formed therein, and a stepped cap (23) coupled to the rear side of the movable housing body (21) so as to selectively engage with the stepped portion (13); a rod (40) which is supported on the fixed end (14), and which passes through a through-hole (23a) of the stepped cap (23) and moves into the sub guide hole (22); a damper pin (50) connected to an end portion of the rod (40) and contained in the sub guide hole (22), the damper pin (50) comprising a pin head (51) having a head channel (51a) formed on the outer peripheral surface thereof such that oil flows through the same and a damper shaft (52) extending forward from the pin head (51); a first damper ring (60) that is fitted to the damper shaft (52) and moves accordingly, a channel being formed between the damper shaft (52) and the first damper ring (60) such that oil flows along the same; a second damper ring (70) that is fitted to the damper shaft (52) between the first damper ring (60) and the pin head (51) and moves accordingly, a channel being formed between the damper shaft (52) and the second damper ring (70) such that oil moves along the same, and the second damper ring (70) selectively blocking the head channel (51a) when forced against the pin head (51); a piston (80) fitted to the rod (40) between the damper pin (50) and the stepped cap (23) so as to move on the rod (40) and to prevent oil that fills the sub guide hole (22) from being discharged to the outside; a first spring (90) installed between the first damper ring (60) and the second damper ring (70); a second spring (100) installed in the sub guide hole (22) in front of the second damper ring (60); and a third spring (110) installed between the piston (80) and the stepped cap (23).

IPC Classes  ?

  • F16F 9/348 - Throttling passages in the form of annular discs operating in opposite directions
  • D06F 37/20 - Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casingPreventing or damping vibrations

15.

SYSTEM FOR MAINTAINING AND SAFETY-MANAGING INFRASTRUCTURE MEASUREMENT INSTRUMENT BY USING MOBILE APPLICATION

      
Application Number KR2017014993
Publication Number 2018/147546
Status In Force
Filing Date 2017-12-19
Publication Date 2018-08-16
Owner EJTECH CO., LTD. (Republic of Korea)
Inventor
  • Kim, Hyun Joong
  • Lee, Kang Moon
  • Nam, Sun Sung

Abstract

The present invention relates to a system for maintaining and safety-managing an infrastructure measurement instrument by using a mobile application, the system: conveniently and efficiently inspecting, through a mobile terminal, a measurement instrument provided in infrastructure including a bridge, a tunnel, an underground structure, and the like; and uploading, to a server of a control center in a site, damage to the structure, corrective measures, or the like through a visual examination so as to provide support such that the same can be reflected in the maintenance and safety management of the structure. Specifically, the system comprises: one or more sensors provided in a particular member of a structure to be managed and generating and outputting sensing information according to the movement of the member; a wireless tag having unique identification information, and connected to the sensors so as to collect sensing information outputted from the sensors and transmit the identification information and the collected sensing information by an external request signal; a manager terminal for receiving and displaying the identification information and the sensing information transmitted from the wireless tag, and inputting inspection information on the visual examination of a corresponding sensor and member and transmitting the same; and an operation server including a database in which management information for each member for the structure to be managed is stored, providing access authority of the manager terminal to the database, and uploading the inspection information transmitted from a selected manager terminal so as to update the management information stored in the database.

IPC Classes  ?

  • G06Q 50/10 - Services
  • H04W 4/00 - Services specially adapted for wireless communication networksFacilities therefor
  • G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
  • H04N 5/225 - Television cameras
  • G06Q 50/08 - Construction

16.

MULTI-LINK HINGE APPARATUS

      
Application Number KR2018000658
Publication Number 2018/135817
Status In Force
Filing Date 2018-01-15
Publication Date 2018-07-26
Owner EPTECH CO., LTD. (Republic of Korea)
Inventor Byun, Yong Geun

Abstract

The present invention relates to a multi-link hinge apparatus comprising: a bottom lever (10) which is installed on a main body (B) of a refrigerator and has a first bottom fastening hole (11) and a second bottom fastening hole (12) which are spaced apart on an end portion thereof; a top lever (20) which is installed on a door (D) of the refrigerator and has a first top fastening hole (21) and a second top fastening hole (22) which are spaced apart; a body lever (30) which has one end thereof pivotally coupled to the first bottom fastening hole (11) of the bottom lever (10) and has a first body fastening hole (31) formed on the other end thereof and a second body fastening hole (32) formed on the inner side thereof; a first link (40) which is pivotally coupled to the first top fastening hole (21) and the first body fastening hole (31); a second link (50) which is pivotally coupled to the second top fastening hole (22) and the second body fastening hole (32) and has a link center fastening hole (51) formed on the inner side thereof; and a third link (60) which is pivotally coupled to the link center fastening hole (51) and the second bottom fastening hole (12).

IPC Classes  ?

  • F25D 23/02 - DoorsCovers
  • E05D 3/16 - Hinges with pins with two or more pins with seven parallel pins and four arms
  • E05F 1/12 - Mechanisms in the shape of hinges or pivots, operated by springs
  • E05F 5/08 - Buffers with springs

17.

HINGE DEVICE FOR WASHING MACHINE DOOR

      
Application Number KR2017011766
Publication Number 2018/080134
Status In Force
Filing Date 2017-10-24
Publication Date 2018-05-03
Owner EPTECH CO., LTD. (Republic of Korea)
Inventor Byun, Yong Geun

Abstract

The present invention relates to a hinge device for a washing machine door. The hinge device is characterized by including: a housing (10) that is fixed to one among a washing machine main body and a washing machine door, and in which a plurality of guide projections (11) are provided at an inlet side and an injection hole (12), through which oil is injected, is formed at a rear side; a spring (20) inserted into the housing (10); an oil damper (30) that is elastically supported by the spring (20), and in which first and second flow paths passing therethrough are formed; a lower cam (40) that closely contacts a front end of the oil damper (30), and in which a guide groove (41) guided along the guide projection (11) is formed in a side surface and a first cam (45) having an inclined surface is provided at an upper side; an upper cam (50) in which a second cam (55) cam-coupled to the first cam (45) is provided at a lower side, and a fitting protrusion (51) is provided at an upper side; a main O-ring (60) that closely contacts an inner circumferential surface of the housing (10) while coupled to the fitting protrusion (51), and is for preventing the oil filling the housing (10) from leaking to the outside; a hinge shaft (70) non-rotatably coupled to the upper cam (50) and fixed to the other one among the washing machine main body and the washing machine door; and a bush cover (80) supporting the hinge shaft (70) so that the hinge shaft (70) passes therethrough, and allowing the hinge shaft (70) to smoothly rotate while coupled to the inlet of the housing (10).

IPC Classes  ?

  • D06F 37/18 - Doors or coversSecuring means therefor
  • D06F 37/10 - DoorsSecuring means therefor
  • D06F 37/28 - DoorsSecurity means therefor
  • D06F 39/14 - Doors or coversSecuring means therefor
  • F16F 9/14 - Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect

18.

BICYCLE POWER GENERATOR

      
Application Number KR2013000902
Publication Number 2013/137560
Status In Force
Filing Date 2013-02-05
Publication Date 2013-09-19
Owner EPATECH CO., LTD. (Republic of Korea)
Inventor Kim, Jin-Wook

Abstract

The present invention relates to a bicycle power generator. The aim of the present invention is to provide a bicycle power generator that can relatively slightly rotate a spider at top dead center between the 12 o'clock and 3 o'clock positions, at which point a great degree of effort is required to rotate said spider, which is connected to a sprocket, during pedaling, and can rotate the spider relatively further at bottom dead center between the 3 o'clock and 6 o'clock positions, at which point less effort is required than at top dead center.

IPC Classes  ?

  • B62M 3/00 - Construction of cranks operated by hand or foot