KR200497704Y1 - Perspective fireproof shutter - Google Patents

Perspective fireproof shutter Download PDF

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Publication number
KR200497704Y1
KR200497704Y1 KR2020210002394U KR20210002394U KR200497704Y1 KR 200497704 Y1 KR200497704 Y1 KR 200497704Y1 KR 2020210002394 U KR2020210002394 U KR 2020210002394U KR 20210002394 U KR20210002394 U KR 20210002394U KR 200497704 Y1 KR200497704 Y1 KR 200497704Y1
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fire
shutter
glass
window
confirmation window
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KR2020210002394U
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Korean (ko)
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KR20230000295U (en
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김상근
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김상근
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    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/10Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • E06B5/16Fireproof doors or similar closures; Adaptations of fixed constructions therefor
    • E06B5/162Fireproof doors having windows or other openings, e.g. for permitting ventilation or escape
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C2/00Fire prevention or containment
    • A62C2/06Physical fire-barriers
    • A62C2/10Fire-proof curtains
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/06Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T30/00Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Special Wing (AREA)

Abstract

본 고안은 화염전파를 차단하는 방화셔터에 확인창을 형성하여 내/외부의 화재발생을 서로 알아볼 수 있도록 확인창을 형성하고, 특히 개폐할 수 있도록 형성하여 소화전 또는 소방차의 소화용 호스의 물을 뿌릴 수 있는 방화셔터용 기능성 확인창을 갖도록 한매우 유용한 고안인 것이다.This design forms a viewing window in the fire shutter that blocks flame spread, so that internal and external fire occurrences can be recognized. In particular, it is formed so that it can be opened and closed to discharge water from the fire hose of a fire hydrant or fire engine. It is a very useful design that has a functional confirmation window for a fire shutter that can be sprayed.

Description

확인창이 형성된 방화셔터{Perspective fireproof shutter}Fireproof shutter with confirmation window {Perspective fireproof shutter}

본 고안은 확인창이 형성된 방화셔터에 관한 것으로서, 더욱 상세하게는 The present invention relates to a fire shutter with a viewing window, and in more detail,

화염전파를 차단하는 방화셔터에 확인창을 형성하여 내/외부의 화재발생을 서로 알아 볼 수 있도록 확인창을 형성하고, 특히 개폐할 수 있도록 형성하여 소화전 또는 소방차의 소화용 호스의 물을 뿌릴 수 있는 방화셔터용 기능성 확인창에 관한 것이다.A viewing window is formed on the fire shutter that blocks the spread of flame so that internal and external fire occurrences can be recognized. In particular, it is formed so that it can be opened and closed so that water can be sprayed from the fire hose of a fire hydrant or fire engine. This is about the functionality confirmation window for fire shutters.

고층건물, 공장형 아파트, 사무실, 다가구 주택, 빌딩, 오피스텔 등에 화염전파 및 통로차단으로 방화셔터를 안전을 위해 의무적으로 설치하고 있다.Fire shutters are mandatorily installed in high-rise buildings, factory-type apartments, offices, multi-family homes, buildings, and officetels for safety reasons to block flame spread and passageways.

도시화 및 산업의 발달로 최대의 이용가치를 위해서는 고층으로 설계하는 시장경제상황에 따라 그만큼 화재에 의한 대량 인명손실은 날로 커지고 있다.Due to urbanization and industrial development, the mass loss of life due to fire is increasing day by day according to the market economic situation where high-rise buildings are designed for maximum use value.

방화셔터는 화염전파를 최대한 막기 위해 통로면에 설치되는 방호셔터는 상대방향에서 화재가 발생되어 방화셔터가 가열된 상태에서 사람이 만지거나 접근시에 화상 등으로 인한 인명손실 및 대피시에 혼란을 야기 시키는 문제점이 있었다.Fire shutters are protective shutters installed on the passageway to prevent flame spread as much as possible. If a fire occurs in the opposite direction and a person touches or approaches the fire shutter while it is heated, it can prevent loss of life due to burns, etc. and confusion during evacuation. There was a problem that caused it.

상기와 같은 문제점이 발생하게 되므로 방화셔터에 유리를 형성하여 내외부를 볼수 있도록 확인창을 형성하였다.Because the above-mentioned problem occurred, glass was formed on the fire shutter to create a viewing window so that the inside and outside could be seen.

상기와 같은 문제점을 해결하기 위해 본원 출원인은 출원하여 등록된 확인창을 선출원하였으나 확인창이 쉽게 녹아버리는 문제점이 있고, 화제시에 불을 진화하기 위한 방법이 없었다. In order to solve the above problems, the applicant of the present application filed an application for a registered confirmation window, but there was a problem that the confirmation window easily melted, and there was no way to extinguish the fire in the event of a fire.

대한민국특허청 실용신안등록 제0418284호(2006.06.01)Korea Intellectual Property Office Utility Model Registration No. 0418284 (2006.06.01)

본 고안의 해결하고자 하는 과제는,The problem to be solved by this design is,

화재시에 방화셔터의 반대방향의 화재 또는 비상상황을 확인할 수 있도록 한 확인창이 형성된 방화셔터를 제공하는 데 그 목적이 있다. The purpose is to provide a fire shutter with a viewing window that allows checking of a fire or emergency situation in the opposite direction of the fire shutter in the event of a fire.

본 고안의 다른 목적은 Another purpose of the present invention is

화재시 소화액 분사 또는 의사전달 등이 필요시에 방화용 확인창을 개폐할수 있는 확인창이 형성된 방화셔터를 제공하는 데 있다.The purpose is to provide a fire shutter with a viewing window that can be opened and closed when spraying fire extinguishing liquid or communicating communication is necessary in the event of a fire.

본 고안의 과제의 해결 수단은,The solution to the problem of this invention is,

슬래트로 서로 연결하여 결합되고 상기 슬래트의 관통구에 확인창을 삽입하여 형성한 방화문에 있어서,In the fire door, which is connected to each other with slats and formed by inserting a confirmation window into a through hole of the slats,

상기 방화용 확인창은 양측면에 고정피스의 결합구가 형성되어 돌출된 체결돌기부와 열기에 강한 재질의 방화유리와 상기 방화유리를 고정하기 위한 외부에 형성한 철재케이스부와 상기 철재케이스의 내부에는 방화유리와 상기 방화유리의 테두리면에는 열차단재를 형성하고, 상기 방화유리의 전방면과 후방면과 직접 닿는 면에 방화용실런트를 삽입하여 결합한 특징이 있다.The fire prevention confirmation window has fixing piece coupling holes formed on both sides, a protruding fastening protrusion, a fire prevention glass made of a heat-resistant material, a steel case formed on the outside for fixing the fire prevention glass, and an inside of the steel case. A heat insulating material is formed on the fire glass and the edge surface of the fire glass, and a fire prevention sealant is inserted and combined on the surface that directly contacts the front and rear surfaces of the fire glass.

본 고안의 확인창이 형성된 방화셔터는 The fire shutter with the viewing window of the present invention is

화재시에 방화셔터가 가려져 있으므로 화재의 진행사항과 화재의 규모 등을 파악하기가 어려운 문제점과 화재로 인한 확인창을 화재열로 쉽게 파손되지 않도록 방화유리와 방화유리를 감싸도록 형성한 열차단재를 형성하여 쉽게 파손되지 않도록 형성한 효과가 있다.In the event of a fire, since the fire shutter is covered, it is difficult to determine the progress and scale of the fire, and a heat insulator is formed to surround the fire glass and fire glass to prevent the viewing window from being easily damaged by fire heat. It has the effect of being formed so that it is not easily damaged.

또한, 방화용 확인창은 필요시에 개폐가 가능하도록 형성하여 확인을 위한 개폐와 소화액을 분사하기 위하여 방화용 확인창을 개폐할 수 있도록 형성한 매우 유용한 고안인 것이다. In addition, the fire prevention confirmation window is a very useful design that can be opened and closed when necessary, so that the fire prevention confirmation window can be opened and closed for confirmation and to spray fire extinguishing liquid.

도 1은 본 고안의 바람직한 실시예의 확인창이 형성된 방화셔터를 도시한 상태도.
도 2는 본 고안의 확인창이 형성된 방화셔터의 방화용 확인창의 사시도.
도 3은 본 고안의 확인창이 형성된 방화셔터의 결합단면도.
도 4는 본 고안의 다른 실시예의 방화용 확인창의 결합상태도.
Figure 1 is a state diagram showing a fire shutter with a viewing window according to a preferred embodiment of the present invention.
Figure 2 is a perspective view of the fire prevention viewing window of the fire shutter with the viewing window of the present invention formed.
Figure 3 is a combined cross-sectional view of a fire shutter with a viewing window of the present invention.
Figure 4 is a combined state diagram of a fire prevention confirmation window of another embodiment of the present invention.

본 고안의 이점 및 특징, 그리고 그것들을 달성하는 방범은 첨부되는 도면과 함께 상세하게 후술되어 있는 실시예들을 참조하면 명확해질 것이다. 그러나 본 고안은 이하에서 개시되는 실시예들에 제한되는 것이 아니라 서로 다른 다양한 형태로 구현될 수 있으며, 단지 본 실시예들은 본 고안의 개시가 완전하도록 하고, 본 고안이 속하는 기술 분야의 통상의 기술자에게 본 고안의 범주를 완전하게 알려주기 위해 제공되는 것이며, 본 고안은 청구항의 범주에 의해 정의될 뿐이다. The advantages and features of the present invention, and the crime prevention that achieves them, will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure of the present invention is complete, and those skilled in the art to which the present invention pertains are not limited to the present invention. It is provided to completely inform the scope of the present invention, and the present invention is only defined by the scope of the claims.

본 명세서에서 사용된 용어는 실시예들을 설명하기 위한 것이며 본 고안을 제한하고자 하는 것은 아니다. 본 명세서에서, 단수형은 문구에서 특별히 언급하지 않는 한 복수형도 포함한다. 명세서에서 사용되는 "포함한다(comprises)." 및/또는 "포함하는(comprising)"은 언급된 구성요소 외에 하나 이상의 다른 구성요소의 존재 또는 추가를 배제하지 않는다. 명세서 전체에 걸쳐 동일한 도면 부호는 동일한 구성 요소를 지칭하며, "및/또는"은 언급된 구성요소들의 각각 및 하나 이상의 모든 조합을 포함한다. 비록 "제1", "제2" 등이 다양한 구성요소들을 서술하기 위해서 사용되나, 이들 구성요소들은 이들 용어에 의해 제한되지 않음은 물론이다. 이들 용어들은 단지 하나의 구성요소를 다른 구성요소와 구별하기 위하여 사용하는 것이다. 따라서, 이하에서 언급되는 제1 구성요소는 본 고안의 기술적 사상 내에서 제2 구성요소일 수도 있음은 물론이다.The terms used in this specification are for describing embodiments and are not intended to limit the present invention. As used herein, singular forms also include plural forms, unless specifically stated otherwise in the context. As used in the specification, “comprises.” and/or “comprising” does not exclude the presence or addition of one or more other elements in addition to the mentioned elements. Like reference numerals refer to like elements throughout the specification, and “and/or” includes each and every combination of one or more of the referenced elements. Although “first”, “second”, etc. are used to describe various components, these components are of course not limited by these terms. These terms are merely used to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may also be a second component within the technical idea of the present invention.

다른 정의가 없다면, 본 명세서에서 사용되는 모든 용어(기술 및 과학적 용어를 포함)는 본 고안이 속하는 기술분야의 통상의 기술자에게 공통적으로 이해될 수 있는 의미로 사용될 수 있을 것이다. 또한, 일반적으로 사용되는 사전에 정의되어 있는 용어들은 명백하게 특별히 정의되어 있지 않는 한 이상적으로 또는 과도하게 해석되지 않는다.Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used with meanings that can be commonly understood by those skilled in the art to which the present invention pertains. Additionally, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless clearly specifically defined.

공간적으로 상대적인 용어인 "아래(below)", "아래(beneath)", "하부(lower)", "위(above)", "상부(upper)" 등은 도면에 도시되어 있는 바와 같이 하나의 구성요소와 다른 구성요소들과의 상관관계를 용이하게 기술하기 위해 사용될 수 있다. 공간적으로 상대적인 용어는 도면에 도시되어 있는 방향에 더하여 사용시 또는 동작시 구성요소들의 서로 다른 방향을 포함하는 용어로 이해되어야 한다. 예를 들어, 도면에 도시되어 있는 구성요소를 뒤집을 경우, 다른 구성요소의 "아래(below)" 또는 "아래(beneath)"로 기술된 구성요소는 다른 구성요소의 "위(above)"에 놓여질 수 있다. 따라서, 예시적인 용어인 "아래"는 아래와 위의 방향을 모두 포함할 수 있다. 구성요소는 다른 방향으로도 배향될 수 있으며, 이에 따라 공간적으로 상대적인 용어들은 배향에 따라 해석될 수 있다.Spatially relative terms such as “below”, “beneath”, “lower”, “above”, “upper”, etc. are used as a single term as shown in the drawing. It can be used to easily describe the correlation between a component and other components. Spatially relative terms should be understood as terms that include different directions of components during use or operation in addition to the directions shown in the drawings. For example, if a component shown in a drawing is flipped over, a component described as "below" or "beneath" another component will be placed "above" the other component. You can. Accordingly, the illustrative term “down” may include both downward and upward directions. Components can also be oriented in other directions, so spatially relative terms can be interpreted according to orientation.

도 1 내지 도 4에 도시한 본 고안의 확인창이 형성된 방화셔터는,The fire shutter with a viewing window of the present invention shown in Figures 1 to 4,

슬래트(100)로 서로 연결하여 결합되고, 상기 슬래트의 관통구(110)에 방화용 확인창을 삽입하여 형성한 방화셔터에 있어서,In the fire shutter, which is connected to each other with slats (100) and formed by inserting a fire detection window into the through hole (110) of the slats,

방화용 확인창(300)은 양측면에 형성한 체결돌기부(130)와 방화유리(150)를 고정하기 위한 철재케이스부(160)와 상기 방화유리(150)의 테두리면에는 세크라울 등의 열차단재(170)를 채우거나 끼워서 결합하고, 방화유리의 전방면과 후방면과 직접 닿는 면에 방화용실런트(180)를 삽입하여 결합한 특징이 있다.The fire prevention inspection window 300 includes fastening protrusions 130 formed on both sides, a steel case part 160 for fixing the fire glass 150, and a heat insulating material such as secraul on the border of the fire glass 150. It is combined by filling or inserting (170), and is characterized by inserting fire prevention sealant (180) into the surface that is in direct contact with the front and rear surfaces of the fire prevention glass.

상기 방화서터(400)는 상부에 수동 또는 전동의 감는 구동장치를 형성하여 필요시에는 셔터를 내려서 화재가 번지는 것을 차단하도록 형성하였다.The fire protection shutter 400 is formed with a manual or electric winding drive device at the top to lower the shutter when necessary to block the spread of fire.

상기 방화용 확인창(300)은 양측면에 고정피스(120)의 결합구가 형성되어 돌출된 체결돌기부(130)와 열기에 강한 재질의 방화유리(150)와 상기 방화유리를 고정하기 위한 외부에 형성한 철재케이스부(160)와 상기 철재케이스의 내부에는 방화유리와 상기 방화유리(150)의 테두리면에는 세크라울 등의 열차단재(170)를 형성하고, 상기 방화유리의 전방면과 후방면과 직접 닿는 면에 방화용실런트(180)를 삽입하여 결합한 특징이 있다.The fire prevention confirmation window 300 is formed with a coupling hole for the fixing piece 120 on both sides, and has a protruding fastening protrusion 130, a fire prevention glass 150 made of a material resistant to heat, and an external surface for fixing the fire prevention glass. Fire-retardant glass is formed inside the formed steel case portion 160 and the steel case, and a heat-blocking material 170 such as secula is formed on the edge of the fire-retardant glass 150, and the front and rear surfaces of the fire-retardant glass are formed. It has the characteristic of being joined by inserting a fire prevention sealant (180) on the surface that is in direct contact with it.

상기와 같이 철재케이스부(160)와 닿는 부분에는 열에 강한 불연재, 방염재 등을 형성하여 열에 의해 녹는 것을 방지하도록 형성하였다.As described above, a heat-resistant incombustible material, a flame retardant material, etc. were formed on the part that contacts the steel case portion 160 to prevent melting by heat.

상기 본 고안의 다른 방화용 확인창(300)은 슬래트(100)로 서로 연결하여 결합되고 상기 슬래트의 관통구(110)에 방화용확인창(300)을 결합시에 상기 방화용확인창을 개폐할 수 있도록 힌지부(200)를 형성한 특징이 있다. Other fire prevention confirmation windows 300 of the present invention are connected and combined with slats 100, and when the fire prevention confirmation window 300 is coupled to the through hole 110 of the slat, the fire prevention confirmation window 300 is opened and closed. It has the feature of forming a hinge portion 200 to enable this.

상기 방화용 확인창(300)은, 일측면에는 고정하기 위한 고정피스(120)로 고정하기 위한 체결구(140)가 형성된 체결돌기부(130)를 형성하고, 다른 일측면에는 확인창이 개폐가 되도록 힌지축(190)을 형성한 힌지부(200)를 형성하고, 상기 힌지부(200)의 체결돌기부(130)에는 체결구(140)를 형성하여 고정피스(120)로 고정하여 결합하였다. The fire prevention confirmation window 300 has a fastening protrusion 130 formed on one side with a fastener 140 for fixing it with a fixing piece 120, and on the other side the confirmation window can be opened and closed. A hinge portion 200 forming a hinge shaft 190 was formed, and a fastener 140 was formed on the fastening protrusion 130 of the hinge portion 200 and fixed with a fixing piece 120.

화재시 또는 비상시에 소화기 또는 공기차단 가스를 주입시에 고정피스를 풀어서 방화용 확인창을 열어서 소화액을 분사할 수 있으며, 사용 후에 다시 닫아서 연기가 빠져나오는 것을 방지하도록 형성한 특징이 있다.In case of fire or emergency, when injecting a fire extinguisher or air blocking gas, the fixing piece can be loosened to open the fire prevention confirmation window to spray fire extinguishing liquid, and it has the feature of being closed again after use to prevent smoke from escaping.

100: 슬래트 110: 관통구
120: 고정피스 130: 체결돌기부
150; 방화유리 160: 철재케이스부
170: 세크라울 180: 방화용실런트
100: slat 110: through hole
120: Fixing piece 130: Fastening protrusion
150; Fireproof glass 160: steel case part
170: Secroul 180: Fire prevention sealant

Claims (2)

슬래트로 서로 연결하여 결합되고 상기 슬래트의 관통구에 방화용 확인창을 삽입하여 형성한 방화셔터에 있어서,
상기 방화용 확인창(300)은 양측면에 고정피스의 결합구가 형성되어 돌출된 체결돌기부(130)와 열기에 강한 재질의 방화유리(150)와 상기 방화유리를 고정하기 위한 외부에 형성한 철재케이스부(160)와, 상기 철재케이스의 내부와 방화유리(150)의 테두리면에는 열차단재(170)를 형성하고, 상기 방화유리의 전방면과 후방면과 직접 닿는 면에 방화용실런트(180)를 삽입하여 결합하고,
상기 방화용 확인창(300)은,
일측면에는 고정하기 위한 고정피스(120)로 고정하기 위한 체결구(140)가 형성된 체결돌기부(130)를 형성하고, 다른 일측면에는 확인창이 개폐가 되도록 힌지축(190)을 형성한 힌지부(200)를 포함하고,
상기 힌지부(200)의 측면에 고정하기 위해 형성한 체결돌기부(130)에는 체결구(140)를 형성하여 고정피스(120)로 슬래트(100)면에 고정한 것을 특징으로 하는 확인창이 형성된 방화셔터.
In the fire shutter, which is connected to each other with slats and formed by inserting a fire detection window into the through hole of the slats,
The fire detection window 300 is formed with a fixing piece coupling hole on both sides, has a protruding fastening protrusion 130, a fire-resistant glass 150 made of a material resistant to heat, and a steel material formed on the outside for fixing the fire-resistant glass. A heat insulating material 170 is formed on the case portion 160, the inside of the steel case, and the edge of the fire glass 150, and a fire prevention sealant 180 is formed on the surface directly contacting the front and rear surfaces of the fire glass. ) to combine by inserting,
The fire prevention confirmation window 300 is,
On one side, a fastening protrusion 130 is formed with a fastener 140 for fixing with a fixing piece 120, and on the other side, a hinge shaft 190 is formed to open and close the confirmation window. Contains (200),
A fire shutter with a confirmation window, characterized in that a fastener 140 is formed on the fastening protrusion 130 formed to fix to the side of the hinge part 200 and fixed to the surface of the slat 100 with a fixing piece 120. .
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200391936Y1 (en) 2005-04-25 2005-08-09 김상근 Perspective fireproof shutter
KR200402137Y1 (en) 2005-08-22 2005-11-25 정국 A bracket for fireproof shutter emergency door
KR200418284Y1 (en) * 2006-03-03 2006-06-12 김상근 Perspective fireproof shutter

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060112595A (en) * 2006-02-07 2006-11-01 김상근 Perspective fireproof shutter
KR20210112824A (en) * 2020-03-06 2021-09-15 주식회사 스페샬화인 Firecargarage shutterdoor equipped with no parking lights

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200391936Y1 (en) 2005-04-25 2005-08-09 김상근 Perspective fireproof shutter
KR200402137Y1 (en) 2005-08-22 2005-11-25 정국 A bracket for fireproof shutter emergency door
KR200418284Y1 (en) * 2006-03-03 2006-06-12 김상근 Perspective fireproof shutter

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