KR200390666Y1 - Packing for airtight presevation - Google Patents
Packing for airtight presevation Download PDFInfo
- Publication number
- KR200390666Y1 KR200390666Y1 KR20-2005-0010508U KR20050010508U KR200390666Y1 KR 200390666 Y1 KR200390666 Y1 KR 200390666Y1 KR 20050010508 U KR20050010508 U KR 20050010508U KR 200390666 Y1 KR200390666 Y1 KR 200390666Y1
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- South Korea
- Prior art keywords
- packing
- water pipe
- pipe
- pipe fitting
- water
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Classifications
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- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
- F16J15/022—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material
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- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
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- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/04—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection
- F16L19/043—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection with additional sealing means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
본 고안은 패킹의 외측을 가압함으로서 패킹의 형상이 변형되어 내측으로 투입되는 관체의 외주에 밀착되어 기밀을 유지할 수 있도록 하는 관이음구의 기밀유지용패킹에 관한것으로서 보다 구체적으로는 고무 또는 실리콘과 같은 통상의 패킹재질을 이용하여 관체로 패킹(1)을 형성하되 패킹(1)의 외주 가운데부에 외주둘레를 따라 요입홈(101)을 형성하고 패킹(1)의 내경인 투입공(103)의 끝에 받침돌부(102)를 형성하며 투입공(103)의 입구둘레에는 라운드(104)를 형성한 구조로 되어 조정구(2)를 회전함에 따라 가압구(4)에 의해 가압되는 패킹(1)의 요입홈(101)바닥면이 패킹(1)의 내경측으로 돌출되어 돌출환(105)이 형성됨으로 패킹(1)과 용수관(3)이 외경이 기밀하게 밀착결합되며 관이음구(2)의 내측으로 용수관(3)을 투입시에 용수관(3)의 단부가 패킹(1)의 받침돌부(102)에 의해 일정길이만 투입되며 받침돌부(102)는 용수관(3)이 딸려들어옴에 따라 관이음구(2)의 내측으로 휘어지게 됨으로 관이음구(2)에 용수관(3)의 결합이 편리하게 되고 관이음구(2)의 조립시 패킹(1)의 투입이 편리하여 생산성이 우수한 잇점이 있다. The present invention relates to an airtight packing of a pipe fitting to maintain the airtightness by pressing the outside of the packing so that the shape of the packing is deformed to be in close contact with the outer circumference of the pipe being introduced into the inside. The packing 1 is formed of a tubular body using a conventional packing material, but a recessed groove 101 is formed along the outer periphery at the center of the outer periphery of the packing 1, and the inner diameter of the packing 1 of the inlet hole 103 is formed. A support protrusion 102 is formed at the end, and a round 104 is formed around the inlet circumference of the input hole 103, so that the packing 1 pressurized by the pressure port 4 is rotated as the adjusting tool 2 is rotated. The bottom surface of the concave groove 101 protrudes toward the inner diameter side of the packing 1 so that the protruding ring 105 is formed so that the outer diameter of the packing 1 and the water pipe 3 is tightly coupled to the inside of the pipe fitting 2. When the water pipe 3 is inserted, the end of the water pipe 3 receives the packing 1. Only a certain length is input by the protrusion 102 and the support protrusion 102 is bent into the inside of the pipe fitting 2 as the water pipe 3 comes in, so that the water pipe 3 is connected to the pipe fitting 2. The coupling is convenient and the packing (1) is convenient when the assembly of the pipe fitting (2) has the advantage of excellent productivity.
Description
본 고안은 관이음구의 기밀유지용패킹에 관한것으로서 보다 구체적으로는 패킹의 외측을 가압함으로서 패킹의 형상이 변형되어 내측으로 투입되는 과체의 외주에 밀착되어 기밀을 유지할 수 있도록 하는 패킹을 제안한 것이다. The present invention relates to an airtight packing of a pipe fitting, and more particularly, a packing to deform the shape of the packing by pressurizing the outside of the packing to be in close contact with the outer periphery of the overload introduced into the inside to maintain the airtightness.
패킹은 주로 관이음등의 이음부에 누수등이 발생하지 않도록 기밀을 유지하기 위하여 사용하는 것으로서 통상 용수관과 같이 내부에서 운송되는 유체가 외부로 흘러나오는것을 방지하고 통신케이블보호관과 같이 관이음부의 외측에서 유체가 관의 내부로 흘러들어 가는 것을 방지하기 위하여 사용된다.The packing is mainly used to maintain the airtightness so that no leakage occurs in the joints such as pipe joints. It prevents the flow of fluid transported from the inside, such as water pipes, to the outside and pipe joints such as communication cable protection tubes. It is used to prevent the fluid from flowing out of the inside of the tube.
또한 패킹은 사용되는 용처에 따라 다양한 형태로 제조되어 사용되고 있으며 본 고안은 농업용 및 소방용 등 물과 같은 유체를 이송하는 용수관을 이음하는 관이음구에 사용되는 패킹을 실시예로 설명하면 다음과 같다.In addition, the packing is manufactured and used in various forms depending on the intended use and the present invention describes the packing used in the pipe fittings for connecting the water pipes for transporting fluids such as water for agriculture and firefighting as an example.
용수관은 사용용도에 맞도록 급수지에서 급수지역까지 이음매가 없이 일체로 형성하여 사용함이 가장 바람직하나 통상적으로는 운반과 시설시의 장애등으로 인하여 운반 및 시설이 편리하도록 일정길이로 절단하여 제조함이 일반적이며 또한 용수관의 중간이 뚫어져서 누수가 발생하면 누수부를 절단하여 제거하고 관이음구를 이용하여 용수관을 연결하여 사용하게 된다.The water pipe is most preferably used to be formed integrally from the water source to the water supply area to suit the purpose of use, but it is usually manufactured by cutting it to a certain length for convenient transportation and facilities due to obstacles in transportation and facilities. In general, if a water leak occurs due to the middle of the water pipe, the water leakage is cut and removed, and the water pipe is connected and used to connect the water pipe.
따라서 종래에도 상기와 같이 용수관을 이음하여 사용하기 위한 관이음구 및 관이음구의 기밀을 유지하기 위하여 다양한 종류의 패킹이 제안되어 사용되고 있으며 이는 주로 단면형상이 원형으로 되어 관이음구의 내주벽에 패킹을 투입하여 패킹의 내면이 관이음구의 내로 투입되는 용수관의 외주에 밀착되도록 함으로서 관이음구의 내주벽과 용수관의 외주에 패킹이 끼이게 하여 용수관을 연결하는 것이 대부분이고 용수관 내측의 압력 즉 수압이 높은 곳에 사용되는 패킹은 도 4에서와 같이 관이음구(2')내에 걸림턱(201')을 형성하여 걸림턱(201')에 밀착하도록 패킹(1')을 투입하고 가압구(4')로 가압함으로서 가압구(4')와 걸림턱(201') 사이에 끼워진 연질의 패킹(1')의 단면이 눌려서 타원형으로 변형되어 패킹(1)의 내경을 축소 되도록 함으로서 투입된 용수관(3')의 외주에 보다 기밀하고 강하게 밀착되도록 하는 것이 사용되고있다.Therefore, conventionally, various types of packings have been proposed and used to maintain the airtightness of the pipe fittings and pipe fittings for use by joining the water pipes as described above. The inner surface of the packing is in close contact with the outer circumference of the water pipe being introduced into the pipe fitting so that the packing is caught between the inner circumferential wall of the pipe fitting and the outer circumference of the water pipe. Packing used in the high water pressure is formed in the pipe fitting hole (2 ') as shown in Figure 4, the locking jaw (201') is put into the packing (1 ') to close contact with the locking jaw (201') and the pressure port (4) By pressing the cross section of the soft packing 1 ′ sandwiched between the pressing hole 4 ′ and the locking jaw 201 ′ to be deformed into an elliptical shape to reduce the inner diameter of the packing 1. It is used to ensure privacy and more strongly adhered to the outer circumference of the water tube (3 ').
그러나 상기와 같이되는 종래의 관이음구(2')는 걸림턱(201')이 관이음구(2')내경의 일정 깊이내측에 위치함으로서 연질의 패킹(1')을 투입하면 패킹(1')의 외경과 관이음구(2') 내경의 마찰에 의해 패킹(1')이 뒤틀리게 되어 걸림턱(201')에 밀착하지 못하게 됨으로 이를 정확하게 투입하기 위하여서는 시간과 노력이 많이들게 되어 조립이 번거롭고 불편하며 합성수지재 용수관(3')을 연결시에는 합성수지재의 특성상 보관상태와 야외에 적재시에 태양광에 의한 열변형등으로 인하여 용수관(3')의 단부가 찌그러져 진원을 이루지 못하는 경우가 대부분이고 이와 같이 진원을 이루지 못하는 용수관(3')은 패킹(1')의 내측으로 용수관(3')의 단부를 투입하기가 어려울 뿐만 아니라, 투입되어 연결된 용수관(3')의 외주에 패킹(1')이 기밀하게 밀착되지 않음으로서 사용중에 누수가 발생하게 된다. However, in the conventional pipe fitting 2 'as described above, the locking jaw 201' is positioned inside a predetermined depth of the inside diameter of the pipe fitting 2 'so that when the soft packing 1' is put into the packing 1 ', As the packing 1 'is distorted by friction between the outer diameter of the tube and the inner diameter of the pipe fitting 2', and the packing 1 'is not in close contact with the locking jaw 201', it takes a lot of time and effort to accurately input the assembly. When the synthetic resin water pipe (3 ') is connected, the end of the water pipe (3') is not crushed due to the storage state and thermal deformation caused by sunlight during outdoor loading. In this way, the water pipe 3 'which does not form a round shape is not only hard to put the end of the water pipe 3' into the packing 1 ', but also to the outer periphery of the water pipe 3' connected and connected. Use as the packing 1 'does not adhere tightly A leak is occurs.
또한 용수관(3')은 재질에 의한 변형 및 가공공차에 의해 외경이 균일하지 못하게 생산되는 경우가 많으며 투입되는 용수관(3')의 치수변동폭에 의해 용수관(3')의 외경이 크면 패킹(1')내로 투입이 어렵게 되고 외경이 작으면 패킹(1')과 용수관(3')의 외경이 밀착되지 않아 기밀을 유지하기가 어렵게 된다. In addition, the water pipe 3 'is often produced unevenly by the deformation and processing tolerance of the material, and when the outside diameter of the water pipe 3' is large due to the dimensional fluctuation width of the water pipe 3 'being introduced. If it is difficult to put into the packing (1 ') and the outer diameter is small, the outer diameter of the packing (1') and the water pipe (3 ') is not in close contact it is difficult to maintain the airtight.
즉 종래의 단면이 원형으로 형성되는 패킹(1')은 패킹을 가압하여 단면형상이 타원형으로 변형되어도 그 변형폭이 작아서 외경이 작은 용수관은 연결하기가 어렵게 되며 관이음구(1'의 내측으로 투입되는 용수관(3')의 투입량 또한 제한을 받지 않음으로 관이음구(3')의 양측에서 투입되는 용수관(3')의 단부가 맞닿은 상태로 관이음구(2')의 용수관(3')을 결합하면 용수관이 관이음구의 내측으로 딸려들어오지 않게 됨으로 가압구(4')가 패킹(1')을 눌러주게 못하게 되거나 조임구(5')와 용수관(3')의 외주에 미끄럼이 발생하게 되고 이를 반복하면 용수관(3')의 결합부와 조임구(5')의 체결력이 약화되어 작은수압에도 누수가 발생하는 등의 결점이 있었다.That is, the conventional packing 1 'having a circular cross section is pressurized by the packing, and even though the cross-sectional shape is deformed into an elliptical shape, the deformation width is small, so that the water pipe having a small outer diameter is difficult to connect. Since the input amount of the introduced water pipe 3 'is not limited, the water pipe 3 of the pipe fitting 2' with the end portions of the water pipe 3 'introduced from both sides of the pipe fitting 3' abuts. The combination of ') prevents the water pipe from coming into the inside of the pipe fitting, so that the pressure port 4' cannot be pressed against the packing 1 'or the outer periphery of the fastener 5' and the water pipe 3 '. If the sliding occurs and repeats this, the coupling force of the water pipe 3 'and the fastener 5' are weakened, such that leakage occurs even at a small water pressure.
본 고안은 상기와 같은 종래의 결점을 개선하여 패킹을 관형으로 형성하여 외측을 가압함으로서 패킹이 변형되는 변형량을 크게할 수 있도록 하여 용수관의 지름이 변화하여도 결합 및 기밀을 유지할 수 있도록 하고 이음관의 내측으로 패킹의 투입이 용이하게 하여 용수관과 관이음구의 조립이 편리하게 한 기밀유지용패킹을 제안함에 그목적이 있다.The present invention improves the conventional drawbacks as described above to form a tubular packing to pressurize the outside to increase the amount of deformation that the packing is deformed so that the coupling and airtightness can be maintained even if the diameter of the water pipe changes The purpose is to propose a hermetic packing that facilitates the packing into the tube and facilitates the assembly of the water pipe and the pipe fitting.
상기와 같은 목적을 달성하기 위하여 본 고안은 패킹의 형상변형폭이 크게 함으로서 패킹의 외경과 관이음구의 패킹투입부의 내경보다 작게 형성하고 패킹의 내경을 용수관보다 크게 할수 있도록 하여 패킹을 관이음구에 투입과 용수관의 조립이 편리하게 한 것인데 이를 첨부된 도면에 의거하여 상세히 설명하면 다음과 같다.In order to achieve the above object, the present invention has a larger shape deformation width of the packing, so that the outer diameter of the packing and the inner diameter of the packing inlet of the pipe fitting are made smaller, and the packing can be made larger than the water pipe. The assembly of the input and water pipes is made to be convenient, which will be described in detail based on the accompanying drawings.
먼저 도 1은 본 고안의 사시도이고 도 2는 본 고안의 단면도가 도시되어 있다.First, Figure 1 is a perspective view of the subject innovation and Figure 2 is a cross-sectional view of the subject innovation.
즉 본 고안은 고무 또는 실리콘과 같은 통상의 패킹재질을 이용하여 관체로 패킹(1)을 형성하되 패킹(1)의 외주 가운데부에 외주둘레를 따라 요입홈(101)을 형성하고 패킹(1)의 내경인 투입공(103)의 끝에 환형테를 내향되게 형성하여 받침돌부(102)를 구성하며 투입공(103)의 입구둘레에는 라운드(104)를 형성한 구조이다.In other words, the present invention forms a packing (1) by the tubular body using a conventional packing material such as rubber or silicone, but forms a concave groove 101 along the outer periphery in the center of the outer periphery of the packing (1) and the packing (1) The inner diameter of the injection hole 103 is formed at the end of the annular frame inwardly to form a support protrusion 102 and the inlet circumference of the inlet hole 103 is formed in a round 104.
상기와 같이되는 본 고안의 작용실시예가 도 3에 도시되어있다. An embodiment of the present invention as described above is shown in FIG.
즉 본 고안은 패킹(1)을 관이음구(2)의 내측에 형성된 걸림턱(201)에 밀착되게 투입하고 그 외측에 가압구(4)의 조임구(5)를 순차로 투입하여 가압구(4)와 조임구(5)의 외측에 조정구(6)를 관이음구(2)와 나착결합함으로서 패킹(1)이 관이음구(2)에 조립되고 조임구(5) 및 가압구(4)의 내측을 통하여 단부가 패킹(1)의 받침돌부(102)에 밀착되게 용수관(3)을 관이음구(2)의 내측으로 투입하여 조정구(6)를 회전하여 가압구(4)를 패킹(1)측으로 이송시키면 가압구(4)에 의해 패킹(1)이 걸림턱(201)측으로 가압되게 되며 있때 가압력에 의해 요입홈(101)의 양단부가 좁아지며 요입홈(101)의 바닥부가 하측으로 눌려 패킹(1)의 내경으로 돌출환(105)이 형성되어 투입되는 용수관(3)의 외주에 밀착하게 되어 기밀하게 결합되는것이다.That is, the present invention puts the packing (1) in close contact with the locking projection 201 formed inside the pipe fitting (2) and the fasteners (5) of the pressure port (4) in order to sequentially put the pressure port ( 4) and the fitting (6) on the outside of the fastener (5) by screwing and fitting the pipe fitting (2), the packing (1) is assembled to the pipe fitting (2) and the tightening opening (5) and the pressurizing opening (4) The water inlet pipe 3 is introduced into the inside of the pipe fitting 2 so that the end portion is in close contact with the supporting protrusion 102 of the packing 1 through the inside, and the adjustment opening 6 is rotated to seal the pressure port 4. ), The packing 1 is pressurized to the locking jaw 201 by the pressure port 4, and both ends of the recessed groove 101 are narrowed by the pressing force, and the bottom of the recessed groove 101 is pressed downward. Protruding ring 105 is formed by the inner diameter of the packing (1) is to be in close contact with the outer periphery of the water pipe (3) to be injected is to be airtightly coupled.
또한 용수관(3)의 결합시에 조임구(5)와 결합된 용수관(3)은 패킹(1)을 가압하기 위하여 조정구(6)를 회전하면 용수관(3)이 관이음구(2)의 내측으로 딸려 들어오게 되는데 있때 용수관(3)의 단부에 밀착된 받침돌부(102)는 용수관(3)의 투입방향으로 휘어짐으로서 용수관(3)의 결합이 편리하게 되는것이다.In addition, when the water pipe (3) is coupled to the fastener (5) when the water pipe (3) is combined, the water pipe (3) is connected to the pipe fitting (2) by rotating the adjusting mechanism (6) to pressurize the packing (1). When it comes to the inside of the support protrusion 102 is in close contact with the end of the water pipe (3) is bent in the direction of the water pipe (3) is to facilitate the coupling of the water pipe (3).
상기와 같이되는 본 고안은 조정구(2)를 회전함에 따라 가압구(4)에 의해 가압되는 패킹(1)의 요입홈(101)바닥면이 패킹(1)의 내경측으로 돌출되어 돌출환(105)이 형성됨으로 패킹(1)과 용수관(3)이 외경이 기밀하게 밀착결합되며 관이음구(2)의 내측으로 용수관(3)을 투입시에 용수관(3)의 단부가 패킹(1)의 받침돌부(102)에 의해 일정길이만 투입되며 받침돌부(102)는 용수관(3)이 딸려들어옴에 따라 관이음구(2)의 내측으로 휘어지게 됨으로 관이음구(2)에 용수관(3)의 결합이 편리하게 되고 관이음구(2)의 조립시 패킹(1)의 투입이 편리하여 생산성이 우수한 잇점이 있다. The present invention as described above is the bottom surface of the concave groove 101 of the packing (1) is pressed by the pressure port (4) as the adjustment sphere (2) protrudes toward the inner diameter side of the packing (1) protruding ring 105 ), The packing 1 and the water pipe 3 are tightly coupled to the outer diameter in an airtight manner, and when the water pipe 3 is introduced into the inside of the pipe fitting 2, the end of the water pipe 3 is packed (1). Only a certain length is input by the support protrusion 102 of the) and the support protrusion 102 is bent into the inside of the pipe fitting 2 as the water pipe 3 comes into the water pipe (2) 3) It is easy to combine and the convenience of the packing (1) when assembling the pipe fitting (2) has the advantage of excellent productivity.
도 1은 본 고안의 사시도1 is a perspective view of the present invention
도 2는 본 고안의 단면도2 is a cross-sectional view of the present invention
도 3은 본 고안의 사용실시예를 나타낸 단면예시도3 is a cross-sectional view showing an embodiment of the present invention
도 4는 종래 패킹의 사용실시예를 나타낸 단면도이다.Figure 4 is a cross-sectional view showing an embodiment of the use of conventional packing.
*** 도면의 주요부분에 대한 부호설명 ****** Explanation of main parts of drawing ***
1 : 패킹 101 : 요입홈1: Packing 101: Concave groove
102 : 받침돌부 103 : 투입공102: support protrusion 103: injection hole
104 : 라운드 105 : 돌출환104: round 105: protrusion ring
2 : 이음관 201 : 걸림턱2: fitting pipe 201: locking jaw
3 : 용수관 4 : 가압구3: water pipe 4: pressurization port
5 : 조임구 6 : 조정구5: fastener 6: adjuster
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2005-0010508U KR200390666Y1 (en) | 2005-04-15 | 2005-04-15 | Packing for airtight presevation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2005-0010508U KR200390666Y1 (en) | 2005-04-15 | 2005-04-15 | Packing for airtight presevation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR200390666Y1 true KR200390666Y1 (en) | 2005-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR20-2005-0010508U KR200390666Y1 (en) | 2005-04-15 | 2005-04-15 | Packing for airtight presevation |
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| Country | Link |
|---|---|
| KR (1) | KR200390666Y1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101097068B1 (en) | 2009-11-02 | 2011-12-23 | 합자회사 화성전력 | Clamp for fixing an electric wire |
| KR101354090B1 (en) * | 2012-07-11 | 2014-01-29 | 린나이코리아 주식회사 | a Built-In Range |
-
2005
- 2005-04-15 KR KR20-2005-0010508U patent/KR200390666Y1/en active IP Right Grant
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101097068B1 (en) | 2009-11-02 | 2011-12-23 | 합자회사 화성전력 | Clamp for fixing an electric wire |
| KR101354090B1 (en) * | 2012-07-11 | 2014-01-29 | 린나이코리아 주식회사 | a Built-In Range |
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