KR930003224Y1 - Electromagnetic safety valve device - Google Patents
Electromagnetic safety valve device Download PDFInfo
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- KR930003224Y1 KR930003224Y1 KR2019900010804U KR900010804U KR930003224Y1 KR 930003224 Y1 KR930003224 Y1 KR 930003224Y1 KR 2019900010804 U KR2019900010804 U KR 2019900010804U KR 900010804 U KR900010804 U KR 900010804U KR 930003224 Y1 KR930003224 Y1 KR 930003224Y1
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- Prior art keywords
- safety valve
- point
- lever
- opening
- electronic safety
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
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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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/10—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid with additional mechanism between armature and closure member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/26—Details
- F23N5/265—Details using electronic means
Abstract
내용 없음.No content.
Description
제1도는 본 고안의 제1실시예를 나타내는 절단 정면도.1 is a front elevational view showing a first embodiment of the present invention.
제2도는 제1도의 중요부를 확대한 작동설명도.2 is an operation explanatory diagram in which the important part of FIG. 1 is enlarged.
제3도는 본 고안의 다른실시예의 중요부를 확대한 작동설명도.3 is an operation explanatory diagram enlarged an important part of another embodiment of the present invention.
제4도는 종래예의 절단정면도.4 is a cutaway front view of a conventional example.
제5도는 제4도의 일부를 확대한 작동설명도.5 is an explanatory view of an enlarged part of FIG.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 지지점 2 : 레버1 support point 2 lever
2a : 제1단부 2b : 제2단부2a: first end 2b: second end
3 : 조작간 2b1: 누름핀3: between operation 2b 1 : push pin
5 : 전자안전밸브 5a : 가압부5: Electronic safety valve 5a: Pressurized part
A : 선 B, C : 접촉점A: line B, C: contact point
D, E : 선분 θ : 사이각D, E: line segment θ: angle between
본 고안은 가스온수기, 가스곤로 그외의 연소기의 연료 공급로에 설치되는 전자안전밸브장치에 관한 것이다.The present invention relates to an electronic safety valve device installed in a fuel supply path of a gas water heater, a gas furnace and other combustors.
종래의 전장안전밸브 장치로서는, 제4도에 도시한 것과 같이 중간의 지점(a)를 중심으로 자유롭게 요동할 수 있는 레버(b)를 구비하여 그 한쪽단부(c)를 왕복운동하는 조작간(d)에 대향배치시킴과 동시에 그 다른쪽단부(e)를 전자안전밸브(g)의 가압부(h)에 대향배치시켜, 상기 조작간(d)의 가압조작에 의하여 상기 레버를 요동시켜 상기 전자안전밸브(g)를 개방시키도록 한 것이 알려져 있다(일본국실개소 제63-101748호).As a conventional electric safety valve device, as shown in FIG. 4, there is provided a lever (b) which can freely swing about an intermediate point (a), and an operation between reciprocating one end portion (c) ( The other end (e) is disposed opposite to the pressurizing portion (h) of the electromagnetic safety valve (g), and the lever is swung by the pressing operation of the operation (d). It is known to open the electronic safety valve g (Japanese Patent Application No. 63-101748).
그러나, 상기 종래의 것은 제5도에 나타낸 바와같이 안전밸브(g)의 개폐방향에 대해 전자안전벨브(g)에 레버(b)의 다른쪽단부(e)가 작용하는 가압력의 벡터의 각도δ가 크기 때문에 전자안전밸브(g)가 개방될 때부터 흡착제(g-1)을 통하여 전자석(g-2)에 맞붙는 폐쇄종단시에 이르기까지 비틀림이 발생하고, 또한 큰힘이 필요하게 되며, 조작간(d)의 조작력이 크게되는 결점이 있다.However, the conventional one is the angle δ of the vector of the pressing force in which the other end e of the lever b acts on the electronic safety valve g with respect to the opening and closing direction of the safety valve g as shown in FIG. Because of its large size, torsion occurs from the time when the solenoid safety valve (g) is opened to the closing end of contact with the electromagnet (g-2) via the adsorbent (g-1), and a large force is required. There is a drawback that the operating force of (d) is large.
게다가, 상기 종래의 것은 전자안전밸브(g)가 흡착제(g-1)과 전자석(g-2)의 맞붙음에 의하여 조작행정의 스토퍼가 되며, 조작압력이 최대가 되는 전자안전밸브(g)의 개방 종단시 다른쪽단부(e)가 전자안전밸브(g)의 중심으로 부터 벗어난 위치를 가압하므로 전자안전밸브(g)에 편심하중이 걸리며, 비틀림에 의해 전자안전밸브(g)의 흡착성능 및 내구성을 악화시키는 결함이 있다.In addition, the above-mentioned conventional electronic safety valve (g) becomes the stopper of the operation stroke by adhering the adsorbent (g-1) and the electromagnet (g-2), and the solenoid safety valve (g) in which the operating pressure is maximum. At the end of opening, the other end (e) presses the position away from the center of the solenoid safety valve (g), so the eccentric load is applied to the solenoid safety valve (g), and the adsorption performance of the solenoid safety valve (g) is caused by torsion. And defects that deteriorate durability.
본 고안에 따른 전자안전밸브장치는 조자각의 조작력을 작개함과 동시에 레버(2)의 제2단부(2b)의 미끄러짐을 방지하도록 제안된 것으로, 중간의 지점(1)을 중심으로 자유롭게 요동하는 레버(2)를 설치하고, 그의 제1단부(2a)을 왕복운동하는 조작간(3)에 대향배치시킴과 동시에 제2단부(2b)를 전자 안전밸브(5)의 가압부(5a)에 대향배치시켜 조작간(3)의 가압 조작에 의하여 레버(2)를 요동시켜 전자안전밸브(5)를 개방시키도록한 것에 있어서, 상기 전자안전밸브(5)의 개폐방향에 직교하여 상기 레버(2)의 지점(1)을 통과하는 선(A)가, 밸브폐쇄시의 상기 가압부(5a)와 제2단부(2b)간의 접촉점(B)와 상기 지점(1)을 연결하는 선분(D)와, 밸브 개방종단시의 상기 가압부(5a)와 제2단부(2b)간의 접촉점(c)와 상기 지점(1)을 연결하는 선분(E)에 의하여 형성된 사이각 θ를 대략등분하는 2등분선이 되도록 한 것을 특징으로 한다.Electronic safety valve device according to the present invention is proposed to prevent the sliding of the second end (2b) of the lever (2) at the same time to control the operating force of the sculpture, freely swinging around the intermediate point (1) The lever 2 is provided, the first end 2a of which is disposed to face the operation section 3 for reciprocating movement, and the second end 2b is attached to the pressurizing portion 5a of the solenoid safety valve 5. In the opposite arrangement, the lever 2 is swung to open the solenoid safety valve 5 by the pressurizing operation of the operating section 3. The lever (orthogonal to the opening and closing direction of the solenoid safety valve 5) The line A passing through the point 1 of 2) connects the contact point B between the pressing portion 5a and the second end 2b and the point 1 at the time of valve closing. ) And the angle θ formed by the contact point c between the pressurizing portion 5a and the second end portion 2b and the line segment E connecting the point 1 at the end of valve opening. The division is characterized by being a bisector.
본 고안의 일실시예에 따른 전자안전밸브장치는 전자안전 밸브의 흡착성능 및 내구성능을 향상시키기 위하여 제안된 것으로, 중간의 지점(1)을 중심으로 자유롭게 요동하는 레버(2)를 설치하고, 그의 제1단부(2a)를 왕복운동하는 조작간(3)에 대향배치시킴과 동시에 제2단부(2b)을 전자안전밸브(5)의 가압부(5a)에 대향배치시켜 조작간(3)의 가압조작에 의하여 레버(2)를 요동시켜 전자안전밸브(5)를 개방시키도록 한 것에 있어서, 상기 전자안전밸브(5)의 개방종단시에 상기 제2단부(2b)가 상기 전자안전밸브(5)의 중심을 가압하도록 한 것을 특징으로 한다.Electronic safety valve device according to an embodiment of the present invention is proposed to improve the adsorption performance and durability of the electronic safety valve, and install a lever (2) freely swinging around the intermediate point (1), The first end 2a is placed opposite to the operation section 3 for reciprocating movement, and the second end 2b is placed opposite to the pressurizing section 5a of the electromagnetic safety valve 5, and the operation section 3 is operated. The lever 2 is swung to open the solenoid safety valve 5 by the pressurizing operation. When the solenoid safety valve 5 is opened, the second end 2b is the solenoid valve. It is characterized by pressing the center of (5).
본 고안은 다른 실시예에 따른 전자안전밸브장치는 조작간의 조작력을 작게함과 동시에 레버의 제2단부의 슬라이드를 방지하고, 또한 전자안전밸브의 흡착성능 및 내구성을 향상시키기 위하여 제안된 것으로, 중간의 지점(1)을 중심으로 자유롭게 요동하는 레버(2)를 설치하고, 그의 제1단부(2a)를 왕복운동하는 조작간(3)에 대향배치시킴과 동시에 제2단부(2b)를 전자안전밸브(5)의 가압부(5a)에 대향배치시켜, 조작간(3)의 가압조작에 의하여 레버(2)를 요동시켜 전자안전밸브(5)를 개방시키도록 한 것에 있어서, 상기 전자안전밸브(5)의 개폐방향에 직교하여 상기 레버(2)의 지점(1)을 통과하는 선(A)가, 밸브 폐쇄시의 상기 가압부(5a)와 제2단부(2b)의 접촉점(B)와 상기 지점(1)을 연결하는 선분(D)와, 밸브 개방종단시의 상기 가압부(5a)와 제2단부(2b)간의 접촉점(c)와 상기 지점(1)을 연결하는 선분(E)에 의하여 형성된 사이각 θ를 대략등분하는 2등분선이 되도록함과 동시에 상기 전자안전밸브(5)의 개방종단시에 상기 제2단부(2b)가 전자안전밸브(5)의 중심을 가압하도록 한 것을 특징으로 한다.The present invention proposes an electronic safety valve device according to another embodiment to reduce the operation force between the operation and at the same time to prevent the slide of the second end of the lever, and also to improve the adsorption performance and durability of the electronic safety valve, A lever 2 freely swinging around the point 1 of the first and second ends 2b is disposed opposite to the operation section 3 for reciprocating the first end 2a, and the second end 2b is electronically secured. The opposing safety valve is arranged so as to face the pressurizing section 5a of the valve 5 so as to swing the lever 2 by the pressurizing operation of the operating section 3 to open the solenoid safety valve 5. A line A passing through the point 1 of the lever 2 perpendicular to the opening and closing direction of (5) is the contact point B between the pressurizing portion 5a and the second end portion 2b when the valve is closed. And the line segment (D) connecting the point (1), and the contact point (c) between the pressing portion (5a) and the second end portion (2b) at the time of valve opening termination At the same time, the second end portion 2b is formed at the end of opening of the solenoid safety valve 5 while at the same time forming a bisectoral line that substantially divides the angle θ formed by the line segment E connecting the point 1. It is characterized in that to pressurize the center of the electronic safety valve (5).
이하, 본 고안의 실시예를 첨부된 도면을 참고로 하여 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도면에서 부호(6)은 예를들면 가스온수기의 전자안전밸브 장치를 나타낸 것으로, 상기 전자안전밸브장치(6)에 설치된 가스통로(7)내에는 전면의 조작패널에 삽입하여 설치한 누름버튼(F)에 의해 가압조작되는 조작간(3)이 삽입됨과 동시에 상기 조작간(3)의 후단(3a)에 제1단부(2a)가 간격을 갖도록 대향배치되는 레버(2)가 설치되고 또한 레버(2)의 제2단부(2b)와 대향배치되게 가압되는 그속제의 가압부(5a)가 전자안전밸브(5)의 중앙에 끼어져 설치된다. 또한 본 실시예에서, 제2단부(2b)는 별개의 누름핀(2b1)이 레버(2)의 제2단부측에 부착되어 있다. 부호(2b2)는 제2단부(2b)의 호형면이다.In the drawing, reference numeral 6 denotes an electronic safety valve device of, for example, a gas water heater, and a push button inserted into the operation panel on the front side of the gas passage 7 installed in the electronic safety valve device 6 is installed. At the same time as the operation section 3 pressurized by F) is inserted, a lever 2 is disposed on the rear end 3a of the operation section 3 so that the first end 2a is spaced apart from each other. A pressurizing portion 5a of the fluxing agent pressed against the second end portion 2b of (2) is fitted in the center of the electromagnetic safety valve 5. Also, in the present embodiment, the second end portion 2b has a separate push pin 2b 1 attached to the second end side of the lever 2. 2b 2 is the arc-shaped surface of the 2nd end part 2b.
상기레버(2)는 중간의 지점(1)을 중심으로 자유롭게 요동하게끔 구성되며, 조작간(3)은 전후방향으로 왕복 운동할 수 있도록 구성된다.The lever 2 is configured to swing freely about the intermediate point 1, and the operation section 3 is configured to reciprocate in the front and rear directions.
조작간(3)에는 누름버튼(F)의 중간위치에서 개방상태로 유지되는 차단밸브(8)이 고정됨과 동시에, 상기 누름버튼(F)의 종단위치의 앞에서 개방되는 소경부로 이루어진 점화밸브(9)가 형성되어 있다.An ignition valve (9) consisting of a small diameter portion which is fixed at the middle of the pushbutton (F) in the open position (8) and is opened in front of the end position of the pushbutton (F). ) Is formed.
따라서, 누름버튼(F)를 시단위치로부터 가압조작하면, 후방으로 이동하는 조작간(3)을 통해 중간위치 앞에서 차단밸브(8)가 개방되며, 종단위치 앞에서 점화밸브(9)가 개방된다. 전자안전밸브(5)는 조작간(3) 및 요동하는 레버(2)를 통해서 흡착체(5c)가 전자석(5d)에 맞붙게하는 종단위치에서 개방상태로 유지되게 된다.Therefore, when the pushbutton F is pressurized from the start position, the shutoff valve 8 is opened in front of the intermediate position through the operation 3 moving backward, and the ignition valve 9 is opened in front of the termination position. The electromagnetic safety valve 5 is kept open in the terminal position through which the adsorber 5c engages the electromagnet 5d via the operating period 3 and the swinging lever 2.
상기 구성은 종래의 하트캠(heart cam)을 사용한 푸시푸시(push-push)식의 것과 특별히 다른 것은 없지만, 본 실시예에서는 전자안전밸브(5)의 개폐방향에 직교하는 레버(2)의 지점(1)을 통과하는 선(a)가 밸브폐쇄시의 전자안전밸브(5)의 가압부(5a)와 누름핀(2b1)간의 접촉점(B)와 지점(1)을 연결하는 선분(D)와, 밸브개방종단시 상기 가압부(5a)와 누름핀(2b1)간의 접촉점(c)와 지점(1)을 연결하는 선분(E)에 의해 형성되는 사이각(θ)를 2등분하는 선이 되도록 하였다.The configuration is not particularly different from the conventional push-push type heart cam, but in this embodiment, the point of the lever 2 orthogonal to the opening and closing direction of the electronic safety valve 5 is provided. Line (D) connecting the point (1) between the contact point (B) and the point (1) between the pressing part (5a) and the push pin (2b 1 ) of the solenoid safety valve (5) when closing the valve (1) ) And the angle θ formed by the contact point c between the pressing portion 5a and the push pin 2b 1 and the line segment E connecting the point 1 at the end of valve opening is divided into two. To be good.
이렇게 할 때는 특히 제2도에 도시된 바와같이 전자안전밸브(5)가 개방할때부터 개방이 종료될 까지의 상기 전자안전밸브(5)의 개폐방향과 상기 전자안전밸브에 작용하는 레버(2)의 가압력의 백터를 거의 일치시킬 수 있기 때문에 전자안전밸브(5)를 개방할 때의 비틀림을 없앨 수 있으며, 또한 밸브 개방 개시때부터 밸브개방 종료때까지 가압력이 유효하게 작용하며 적은 힘으로도 충분하며 조작간(3)의 조작력을 작게할 수가 있다. 또한 전자안전밸브(5)의 밸브 개방때부터 종료때까지 누름핀(2b1)과 전자안전밸브(5)의 가압부(5a)간의 접촉점의 변위가 누름핀(2b1)측의 호형면(2b2)과 전자안전밸브(5)의 가압부(5a)측에서 동일방향 즉, 제2도의 좌측방향에서 대략 같게 되기 때문에 누름핀(2b1)은 상기 가압부(5a)위를 구르게되며 미끄럼이 발생하는 경우와 같이 미끄러짐에 의해 금속가루가 발생되고, 전자안전밸브의 밑봉면(5b)에 부착하여 가스누출이 생기지 않게 된다.In this case, as shown in FIG. 2, the lever 2 acting on the opening and closing direction of the electronic safety valve 5 and the electronic safety valve from the time of opening the electronic safety valve 5 to the end of the opening. Since the vector of the pressing force can be almost matched, the torsion at the time of opening the solenoid safety valve 5 can be eliminated, and the pressing force is effective from the start of the valve opening to the end of the valve opening. It is enough, and the operation force of the operation period 3 can be made small. In addition, arc-shaped surface on the side of the electronic safety valve 5, the valve opening to the push pin when the end from the time (2b 1) and a contact point displacement between the electronic safety valve 5, the pressing portion (5a) of the push-pin (2b 1) of the ( 2b 2 ) and the push pin 2b 1 are rolled over the pressurizing portion 5a because they are substantially the same in the same direction on the pressurizing portion 5a side of the electronic safety valve 5, that is, in the left direction of FIG. 2. As in the case of sliding, metal powder is generated by sliding, and is attached to the bottom bar surface 5b of the electromagnetic safety valve so that no gas leakage occurs.
또한 본 실시예에서는 전자안전밸브(5)가 흡착체(5c)와 전자부(5a)의 맞붙음에 의해 조작행정의 스톱퍼가 되어 조작 가압력이 최대가 되는 전자안전밸브(5)의 개방종료시에 누름핀(2b1)이 상기 전자안전밸브(5)의 중심을 가압하도록 한것이며, 이것에 의하여 전자안전밸브(5)에 편심하중이 걸려 비틀림과 같은 것이 발생되지 않으며, 흡착성 및 내구성이 양호해진다.In this embodiment, the solenoid safety valve 5 is a stopper for the operation stroke by adhering the adsorption body 5c and the solenoid portion 5a, and at the end of opening of the solenoid safety valve 5 which maximizes the operating pressure. The push pin 2b 1 presses the center of the solenoid safety valve 5, whereby the eccentric load is applied to the solenoid safety valve 5 so that no torsion occurs and the adsorption and durability are improved. .
제3도는 전자안전밸브(5)의 개방종료시 누름핀 (2b1)이 상기 전자안전밸브(5)의 중심을 가압하도록한 다른 실시예를 나타내는 것으로, 이 경우에는 전자안전밸브(5)의 개폐방향에 직교하여 레버(2)의 지점(1)을 통과하는 선(A)이 밸브폐쇄시의 전자안전밸브(5)의 가압부(5a)와 누름핀(2b1)간의 접촉점(B)와 상기지점(1)을 연결하는 선분(D)와, 밸브 개방 종료시의 상기 가압부(5a)와 누름핀(2b1)간의 접촉점(C)와 상기 지점(1)을 연결하는 선분(E)에 의해 형성되는 사이각(θ)의 외부에 위치하기 때문에 상기 실시예와 같이 조작간(3)의 조작력을 경감하는 효과는 없지만 상기 실시예의 흡착성 및 내구성을 양호하게 하는 효과를 갖고 있다.3 shows another embodiment in which the push pin 2b 1 presses the center of the solenoid safety valve 5 when the solenoid safety valve 5 is opened. In this case, the solenoid safety valve 5 is opened and closed. The line A passing through the point 1 of the lever 2 perpendicular to the direction is the contact point B between the pressing part 5a and the push pin 2b 1 of the solenoid safety valve 5 when the valve is closed. To the line segment D connecting the point 1 , the contact point C between the pressing section 5a and the push pin 2b 1 at the end of valve opening, and the line segment E connecting the point 1 Since it is located outside of the angle angle θ formed by the above-described embodiment, there is no effect of reducing the operating force of the operation section 3 as in the above embodiment, but it has the effect of improving the adsorptivity and durability of the above embodiment.
본 고안에 따른 전자안전밸브장치에 있어서는 전자안전밸브(5)의 개방시로부터 밸브 개방 종료까지 조작간(3)을 통한 레버(2)의 가압력이 전자안전밸브(5)의 개폐방향과 대체로 일치하기 때문에 조작간(3)을 비틀림이 없이 조작할 수 있으며, 또한 효과적으로 작용시켜 조작력을 작게할 수 있음과 동시에 전자안전밸브(5)의 흡착을 위한 효과적인 힘을 필요로 하는 밸브개방 종단시에 있어서도 조작가압력이 전자안전밸브의 개폐 방향과 대개 일치하는 것으로 유효하게 가압하는 효과를 갖는다.In the solenoid safety valve device according to the present invention, the pressing force of the lever 2 through the operation period 3 substantially coincides with the opening and closing direction of the solenoid safety valve 5 from the time of opening the solenoid safety valve 5 to the end of valve opening. Therefore, it is possible to operate the operating section 3 without twisting, to effectively operate the operation force and to reduce the operating force, and at the time of opening the valve which requires an effective force for the suction of the solenoid safety valve 5. It is effective to pressurize effectively that the operating pressure is generally coincident with the opening and closing direction of the electromagnetic safety valve.
또한, 본 고안의 전자안전밸브장치에 있어서는 밸브 개방종료시 레버(2)의 제2단부(2b1)가 전자안전밸브(5)를 비틀리지 않게되며 전자안전밸브(5)의 흡착성 및 내구성을 향상시킬 수 있는 효과를 갖는다.In addition, in the solenoid safety valve device of the present invention, the second end portion 2b 1 of the lever 2 does not twist the solenoid safety valve 5 at the end of valve opening and improves the adsorption and durability of the solenoid safety valve 5. It has an effect that can be made.
Claims (2)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989096959U JPH0336574U (en) | 1989-08-19 | 1989-08-19 | |
| JP1-96959 | 1989-08-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR910004543U KR910004543U (en) | 1991-03-19 |
| KR930003224Y1 true KR930003224Y1 (en) | 1993-06-03 |
Family
ID=14178799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019900010804U KR930003224Y1 (en) | 1989-08-19 | 1990-07-21 | Electromagnetic safety valve device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0336574U (en) |
| KR (1) | KR930003224Y1 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5328543B1 (en) * | 1971-05-18 | 1978-08-15 | ||
| JPS54103894A (en) * | 1978-02-03 | 1979-08-15 | Hokuriku Pharmaceutical | 11dithienylmethylene quinolitidine* its acid addition salt and their manufacture |
-
1989
- 1989-08-19 JP JP1989096959U patent/JPH0336574U/ja active Pending
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1990
- 1990-07-21 KR KR2019900010804U patent/KR930003224Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR910004543U (en) | 1991-03-19 |
| JPH0336574U (en) | 1991-04-09 |
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