KR200446923Y1 - Insertion Type Temperature Sensor Sealing Device - Google Patents

Insertion Type Temperature Sensor Sealing Device Download PDF

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Publication number
KR200446923Y1
KR200446923Y1 KR20080003173U KR20080003173U KR200446923Y1 KR 200446923 Y1 KR200446923 Y1 KR 200446923Y1 KR 20080003173 U KR20080003173 U KR 20080003173U KR 20080003173 U KR20080003173 U KR 20080003173U KR 200446923 Y1 KR200446923 Y1 KR 200446923Y1
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South Korea
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temperature sensor
screw
sealing
pocket
outer peripheral
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KR20080003173U
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Korean (ko)
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KR20090009230U (en
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이태원
김용기
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한국건설기술연구원
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/08—Protective devices, e.g. casings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
    • G01K13/026—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow of moving liquids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K17/00—Measuring quantity of heat
    • G01K17/06—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device
    • G01K17/08—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature
    • G01K17/10—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature between an inlet and an outlet point, combined with measurement of rate of flow of the medium if such, by integration during a certain time-interval

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

본 고안은 난방배관에 설치되는 온도센서의 봉인장치에 관한 것으로서, 배관의 외주면 일측에 수밀성을 유지하도록 나사체결되며 단부가 배관의 내부에 도달하는 온도센서포켓(100); 상기 온도센서포켓(100)의 중심축을 따라 형성된 온도센서수용홈(110)에 삽입되는 온도센서(200); 상기 온도센서포켓(100)의 상단부 외주면에 삽입되는 원통형의 봉인몸체(300); 상기 봉인몸체(300)의 외주면 일측에 돌출되고 내부에 수용공간이 마련된 나사수용부(310); 상기 나사수용부(310)에 삽입되어 상기 봉인몸체(300)의 외주면 일측에 구비된 나사구멍(320)을 통과한 후 상기 온도센서포켓(100)의 상단부 외주면 일측에 형성된 암나사부(120)에 나사체결되고, 상기 암나사부(120)를 통과한 단부가 상기 온도센서(200)의 일측면을 압착지지하는 잠금나사(400); 상기 잠금나사(400)가 체결된 상기 나사수용부(310)의 입구를 덮는 봉인캡(500); 및, 상기 봉인캡(500)과 상기 나사수용부(310) 각각을 가로지르도록 관통된 와이어구멍(11)을 통과한 후 봉인되는 봉인와이어(22);를 포함하여 구성되는 것을 특징으로 한다.The present invention relates to a sealing device for a temperature sensor installed in the heating pipe, the screw is fastened to maintain the watertightness on one side of the outer peripheral surface of the pipe and the end of the temperature sensor pocket 100 reaches the inside of the pipe; A temperature sensor 200 inserted into a temperature sensor accommodating groove 110 formed along a central axis of the temperature sensor pocket 100; Cylindrical seal body 300 is inserted into the outer peripheral surface of the upper end of the temperature sensor pocket 100; A screw accommodating part 310 protruding from one side of the outer circumferential surface of the sealing body 300 and having a receiving space therein; Inserted into the screw receiving portion 310 and passes through the screw hole 320 provided on one side of the outer peripheral surface of the sealing body 300 to the female screw portion 120 formed on one side of the outer peripheral surface of the upper end of the temperature sensor pocket 100 Locking screw 400 is screwed, the end portion passing through the female screw portion 120 is crimped to support one side of the temperature sensor 200; A sealing cap 500 covering the inlet of the screw receiving portion 310 to which the lock screw 400 is fastened; And a sealing wire 22 which is sealed after passing through the wire hole 11 that passes through each of the sealing cap 500 and the screw accommodating portion 310.

온도센서포켓, 온도센서, 봉인몸체, 봉인캡, 봉인와이어, 잠금나사  Temperature sensor pocket, temperature sensor, sealing body, sealing cap, sealing wire, locking screw

Description

삽입형 온도센서 봉인장치{Insertion Type Temperature Sensor Sealing Device} Insertion Type Temperature Sensor Sealing Device

본 고안은 냉난방배관에 설치되는 온도센서의 봉인장치에 관한 것으로서, 보다 상세히는 봉인(seal)을 파손하거나 봉인와이어를 절단하지 않으면 온도센서를 제거할 수 없도록 잠금나사(400)를 체결한 후 봉인몸체(300)와 봉인캡(500)을 봉인와이어(22)로 결속한 후 봉인하는 것을 특징으로 한다.The present invention relates to a sealing device for a temperature sensor installed in a heating and heating pipe, and more specifically, after locking the lock screw 400 so that the temperature sensor can not be removed unless the seal is broken or the sealing wire is cut. Body 300 and the sealing cap 500 is characterized in that the sealing after binding the sealing wire (22).

냉수 및 온수를 공급하는 냉난방시스템에는 공급되는 수온을 체크하는 온도센서와 환수되는 수온을 체크하는 온도센서가 각각 구비되어 있으며, 적산열량계는 두 개의 온도센서 사이의 온도차 및 측정된 유량을 이용하여 공급된 열량을 계산하게 된다.The cooling and heating system for supplying cold water and hot water is equipped with a temperature sensor for checking the supplied water temperature and a temperature sensor for checking the returned water temperature, and the integrated calorimeter is supplied by using the temperature difference between the two temperature sensors and the measured flow rate. The calculated calories are calculated.

이와 같은 온도센서는 도1에 도시된 바와 같이 배관 내부에 삽입되어 배관 내부를 흐르는 온수의 수온을 감지하는데, 이러한 온도센서를 사용자가 임의로 제거하는 경우 공급된 열량을 제대로 계산할 수 없게 된다.Such a temperature sensor is inserted into the pipe as shown in Figure 1 detects the water temperature of the hot water flowing through the pipe, if the user removes the temperature sensor arbitrarily it can not properly calculate the amount of heat supplied.

따라서 온도센서를 설치한 후에는 도1에 도시된 바와 같이 온도센서를 잠금나사로 잠근 후 잠금나사와 온도센서를 봉인와이어로 결속한 후 봉인와이어 양측 단부를 봉인하게 된다.Therefore, after the temperature sensor is installed, the temperature sensor is locked with the lock screw as shown in FIG. 1, the lock screw and the temperature sensor are bound with the seal wire, and the ends of the seal wire are sealed.

그러나 이러한 종래의 봉인장치는 잠금나사가 외부로 노출되는 구조가 되어 봉인와이어의 유격이 발생하는 경우 잠금나사를 풀어서 온도센서를 임의로 제거할 수 있다는 문제점이 있다.However, such a conventional sealing device has a structure in which the locking screw is exposed to the outside, there is a problem that the temperature sensor can be removed arbitrarily by loosening the locking screw when the play of the sealing wire is generated.

상기한 문제점을 해결하기 위하여 창작된 본 고안은 봉인이나 봉인와이어를 파손하지 않으면 잠금나사에 접근할 수 없는 봉인장치를 제공하여 사용자가 임의로 온도센서를 제거할 수 없도록 함을 그 목적으로 한다.The present invention created to solve the above problems is to provide a sealing device inaccessible to the lock screw unless the seal or seal wire is damaged, so that the user can not remove the temperature sensor arbitrarily.

상기한 문제점을 해결하기 위하여 창작된 본 고안의 기술적 구성은 다음과 같다.The technical configuration of the present invention created to solve the above problems is as follows.

본 고안은 냉난방배관에 설치되는 온도센서의 봉인장치에 관한 것으로서, 배관의 외주면 일측에 수밀성을 유지하도록 나사체결되며 단부가 배관의 내부에 도달하는 온도센서포켓(100); 상기 온도센서포켓(100)의 중심축을 따라 형성된 온도센서수용홈(110)에 삽입되는 온도센서(200); 상기 온도센서포켓(100)의 상단부 외주면에 삽입되는 원통형의 봉인몸체(300); 상기 봉인몸체(300)의 외주면 일측에 돌출되고 내부에 수용공간이 마련된 나사수용부(310); 상기 나사수용부(310)에 삽입되어 상기 봉인몸체(300)의 외주면 일측에 구비된 나사구멍(320)을 통과한 후 상기 온도센서포켓(100)의 상단부 외주면 일측에 형성된 암나사부(120)에 나사체결되고, 상기 암나사부(120)를 통과한 단부가 상기 온도센서(200)의 일측면을 압착지지하는 잠금나사(400); 상기 잠금나사(400)가 체결된 상기 나사수용부(310)의 입구를 덮는 봉인캡(500); 및, 상기 봉인캡(500)과 상기 나사수용부(310) 각각을 가로지르도록 관통된 와이어구멍(11)을 통과한 후 봉인되는 봉인와이어(22);를 포함하여 구성되는 것을 특징으로 한다.The present invention relates to a sealing device for a temperature sensor installed in a heating and heating pipe, the screw is fastened to maintain the watertightness on one side of the outer peripheral surface of the pipe and the end of the temperature sensor pocket (100); A temperature sensor 200 inserted into a temperature sensor accommodating groove 110 formed along a central axis of the temperature sensor pocket 100; Cylindrical seal body 300 is inserted into the outer peripheral surface of the upper end of the temperature sensor pocket 100; A screw accommodating part 310 protruding from one side of the outer circumferential surface of the sealing body 300 and having a receiving space therein; Inserted into the screw receiving portion 310 and passes through the screw hole 320 provided on one side of the outer peripheral surface of the sealing body 300 to the female screw portion 120 formed on one side of the outer peripheral surface of the upper end of the temperature sensor pocket 100 Locking screw 400 is screwed, the end portion passing through the female screw portion 120 is crimped to support one side of the temperature sensor 200; A sealing cap 500 covering the inlet of the screw receiving portion 310 to which the lock screw 400 is fastened; And a sealing wire 22 which is sealed after passing through the wire hole 11 that passes through each of the sealing cap 500 and the screw accommodating portion 310.

상기한 구성의 본 고안은 종래의 봉인장치와는 달리 봉인와이어(22)를 절단하고 봉인캡(500)을 제거하기 전에는 잠금나사(400)를 해체할 수 없는 구조가 되어 사용자가 공급자 몰래 임의로 온도센서를 제거하지 못하도록 하여 공급된 열량이 정확히 적산되도록 하는 기술적 효과가 있다.Unlike the conventional sealing device, the present invention has a structure in which the locking screw 400 cannot be disassembled until the sealing wire 22 is cut and the sealing cap 500 is removed. There is a technical effect of preventing the sensor from being removed so that the amount of heat supplied is accurately integrated.

이하에서는 본 고안의 구체적 실시예를 첨부도면을 참조하여 본 고안의 기술적 내용을 보다 상세히 설명한다.Hereinafter, with reference to the accompanying drawings a specific embodiment of the present invention will be described in more detail the technical contents of the present invention.

도2는 본 고안에 따른 봉인장치의 구조를 도시하고 있으며, 도3은 본 고안을 구성하는 잠금나사(400), 봉인몸체(300), 및 봉인캡(500)을 도시하고 있다.Figure 2 shows the structure of the sealing device according to the present invention, Figure 3 shows a locking screw 400, sealing body 300, and sealing cap 500 constituting the present invention.

온도센서포켓(100)은 도2에 도시된 바와 같이 배관의 외주면 일측에 수밀성을 유지하도록 나사체결되며 그 단부가 배관의 내부에 도달한다.The temperature sensor pocket 100 is screwed to maintain watertightness on one side of the outer circumferential surface of the pipe as shown in FIG. 2 and its end reaches the inside of the pipe.

온도센서포켓(100)은 중심축을 따라 온도센서수용홈(110)이 구비되어 있으며, 온도센서(200)는 온도센서수용홈(110)에 삽입된다.Temperature sensor pocket 100 is provided with a temperature sensor accommodation groove 110 along the central axis, the temperature sensor 200 is inserted into the temperature sensor accommodation groove (110).

온도센서(200)는 온도센서포켓(100)에 삽입되어 온도센서포켓(100)의 배관 내부측 단부를 통하여 전달된 온수의 온도를 측정한다.The temperature sensor 200 is inserted into the temperature sensor pocket 100 to measure the temperature of the hot water delivered through the inner end of the pipe of the temperature sensor pocket 100.

봉인몸체(300)는 온도센서포켓(100)의 상단부 외주면에 삽입되도록 원통형으로 형성되는데, 봉인몸체(300)의 외주면 일측에는 나사수용부(310)가 형성된다.The sealing body 300 is formed in a cylindrical shape so as to be inserted into the outer peripheral surface of the upper end of the temperature sensor pocket 100, the screw receiving portion 310 is formed on one side of the outer peripheral surface of the sealing body 300.

나사수용부(310)는 도2 및 도3에 도시된 바와 같이 봉인몸체(300)의 외주면에 수직한 방향으로 돌출되고 그 내부에는 잠금나사(400)를 수용하는 수용공간이 마련된다. As shown in FIGS. 2 and 3, the screw accommodating part 310 protrudes in a direction perpendicular to the outer circumferential surface of the sealing body 300, and an accommodation space for accommodating the locking screw 400 is provided therein.

잠금나사(400)는 도2 및 도3에 도시된 바와 같이 나사수용부(310)에 삽입되어 봉인몸체(300)의 외주면 일측(다시 말하면 나사수용부(310)의 바닥면)에 구비된 나사구멍(320)을 통과한 후 온도센서포켓(100)의 상단부 외주면 일측에 형성된 암나사부(120)에 나사체결된다.As shown in FIGS. 2 and 3, the locking screw 400 is inserted into the screw accommodating part 310 and provided on one side of the outer circumferential surface of the sealing body 300 (that is, the bottom surface of the screw accommodating part 310). After passing through the hole 320 is screwed to the female screw portion 120 formed on one side of the outer peripheral surface of the upper end of the temperature sensor pocket 100.

암나사부(120)를 통과한 잠금나사의 단부는 온도센서(200)의 일측면을 압착지지하여 온도센서(200)가 온도센서포켓(100)에서 이탈되는 것을 방지한다.The end of the locking screw passing through the female screw part 120 is pressed against one side of the temperature sensor 200 to prevent the temperature sensor 200 from being separated from the temperature sensor pocket 100.

이와 같이 잠금나사(400)가 체결되면 나사수용부(310)의 입구를 도3에 도시된 형태의 봉인캡(500)으로 덮는다.When the lock screw 400 is fastened as described above, the inlet of the screw accommodating part 310 is covered with a sealing cap 500 of the type shown in FIG. 3.

봉인캡(500)은 나사수용부(310)의 외주면을 덮을 수 있는 뚜껑 형상을 하고 있으며 봉인캡(500)을 덮으면 잠금나사(400)는 외부로 노출되지 않게 된다.The sealing cap 500 has a lid shape to cover the outer circumferential surface of the screw accommodating part 310, and when the sealing cap 500 is covered, the locking screw 400 is not exposed to the outside.

봉인와이어(22)는 봉인캡(500)과 나사수용부(310) 각각을 가로지르도록 관통된 와이어구멍(11)을 통과한 후 봉인된다.The sealing wire 22 is sealed after passing through the wire hole 11 that passes through each of the sealing cap 500 and the screw receiving portion 310.

즉 봉인이 완료되면 봉인을 파손하지 않는 한 봉인캡(500)을 개방할 수 없으며, 잠금나사(400)를 돌릴 수 없게 된다. 따라서 봉인을 파손하지 않고 온도센서(200)를 온도센서포켓(100)에서 분리할 수 없게 된다.That is, when the seal is completed, the seal cap 500 cannot be opened unless the seal is broken, and the lock screw 400 cannot be turned. Therefore, the temperature sensor 200 cannot be separated from the temperature sensor pocket 100 without breaking the seal.

온도센서(200)는 도3에 도시된 바와 같이 잠금나사(400)가 압착지지되는 부분에 함몰부(210)가 형성된다. 따라서 잠금나사(400)가 체결되면 온도센서(200)는 온도센서포켓(100)에서 이탈될 수 없다.As shown in FIG. 3, the temperature sensor 200 has a recess 210 formed at a portion at which the lock screw 400 is pressed and supported. Therefore, when the lock screw 400 is fastened, the temperature sensor 200 cannot be separated from the temperature sensor pocket 100.

상기한 바와 같이 본 고안의 구체적 실시예를 참조하여 본 고안의 기술적 사상을 설명하였으나, 본 고안의 보호범위가 이러한 실시예에 한정되는 것은 아니며 본 고안의 기술적 요지를 변경하지 않는 범위 내에서 다양한 설계변경, 공지기술의 부가나 삭제, 단순한 수치한정 등의 경우에도 본 고안의 보호범위에 속함을 분명히 한다.As described above, the technical idea of the present invention has been described with reference to specific embodiments of the present invention, but the scope of protection of the present invention is not limited to these embodiments, and various designs may be made without changing the technical spirit of the present invention. Changes, additions or deletions of well-known technology, and simple numerical limitations also make it clear that they belong to the protection scope of the present invention.

도1은 종래의 봉인장치 구조를 도시한다.1 shows a conventional sealing device structure.

도2는 본 고안에 따른 봉인장치의 구조를 도시한다.Figure 2 shows the structure of the sealing device according to the present invention.

도3은 본 고안을 구성하는 온도센서(200), 온도센서포켓(100)의 일부, 잠금나사(400), 봉인몸체(300), 및 봉인캡(500)을 도시한다.Figure 3 shows a part of the temperature sensor 200, the temperature sensor pocket 100, the locking screw 400, the sealing body 300, and the sealing cap 500 constituting the present invention.

<본 고안의 주요부분에 대한 부호의 설명><Description of the code for the main part of the present invention>

100:온도센서포켓100: Temperature sensor pocket

110:온도센서수용홈110: temperature sensor receiving groove

120:암나사부120: female thread

200:온도센서200: temperature sensor

210:함몰부210: depression

300:봉인몸체300: sealed body

310:나사수용부310: screw receiving part

320;나사구멍320; screw hole

400:잠금나사400: Locking screw

500:봉인캡500: sealing cap

11:와이어구멍11: Wire hole

22:봉인와이어22: sealed wire

Claims (2)

냉난방배관에 설치되는 온도센서의 봉인장치에 관한 것으로서,The present invention relates to a sealing device for a temperature sensor installed in an air conditioning heating pipe. 배관의 외주면 일측에 수밀성을 유지하도록 나사체결되며 단부가 배관의 내부에 도달하는 온도센서포켓(100);A temperature sensor pocket 100 which is screwed to maintain watertightness on one side of the outer circumferential surface of the pipe and reaches an end of the pipe; 상기 온도센서포켓(100)의 중심축을 따라 형성된 온도센서수용홈(110)에 삽입되는 온도센서(200);A temperature sensor 200 inserted into a temperature sensor accommodating groove 110 formed along a central axis of the temperature sensor pocket 100; 상기 온도센서포켓(100)의 상단부 외주면에 삽입되는 원통형의 봉인몸체(300);Cylindrical seal body 300 is inserted into the outer peripheral surface of the upper end of the temperature sensor pocket 100; 상기 봉인몸체(300)의 외주면 일측에 돌출되고 내부에 수용공간이 마련된 나사수용부(310);A screw accommodating part 310 protruding from one side of the outer circumferential surface of the sealing body 300 and having a receiving space therein; 상기 나사수용부(310)에 삽입되어 상기 봉인몸체(300)의 외주면 일측에 구비된 나사구멍(320)을 통과한 후 상기 온도센서포켓(100)의 상단부 외주면 일측에 형성된 암나사부(120)에 나사체결되고, 상기 암나사부(120)를 통과한 단부가 상기 온도센서(200)의 일측면을 압착지지하는 잠금나사(400);Inserted into the screw receiving portion 310 and passes through the screw hole 320 provided on one side of the outer peripheral surface of the sealing body 300 to the female screw portion 120 formed on one side of the outer peripheral surface of the upper end of the temperature sensor pocket 100 Locking screw 400 is screwed, the end portion passing through the female screw portion 120 is crimped to support one side of the temperature sensor 200; 상기 잠금나사(400)가 체결된 상기 나사수용부(310)의 입구를 덮는 봉인캡(500); 및,A sealing cap 500 covering the inlet of the screw receiving portion 310 to which the lock screw 400 is fastened; And, 상기 봉인캡(500)과 상기 나사수용부(310) 각각을 가로지르도록 관통된 와이어구멍(11)을 통과한 후 봉인되는 봉인와이어(22);A sealing wire 22 which is sealed after passing through the wire hole 11 which crosses each of the sealing cap 500 and the screw receiving portion 310; 를 포함하여 구성되는 것을 특징으로 하는 삽입형 온도센서 봉인장치.Insertion type temperature sensor sealing device characterized in that it comprises a. 제1항에서,In claim 1, 상기 온도센서(200)는 상기 잠금나사(400)가 압착지지되는 부분에 함몰부(210);가 형성되어 있는 것을 특징으로 하는 삽입형 온도센서 봉인장치.The temperature sensor 200 has a recess 210 in the portion that the locking screw 400 is crimped support; Insertion type temperature sensor sealing device, characterized in that formed.
KR20080003173U 2008-03-11 2008-03-11 Insertion Type Temperature Sensor Sealing Device KR200446923Y1 (en)

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KR200447123Y1 (en) * 2009-09-23 2009-12-31 (주)두광엠에프지 Easy to fix sensor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0727259A (en) * 1993-07-12 1995-01-27 Toyo Giken Kk Cable holding tool
WO2000023971A1 (en) 1998-10-20 2000-04-27 Schlumberger Industries Sa Lead seal assembly
JP2002046762A (en) 2000-08-04 2002-02-12 San Frend:Kk Temporary lid implement, apparatus for measuring temperature for food and method for heat sterilization

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0727259A (en) * 1993-07-12 1995-01-27 Toyo Giken Kk Cable holding tool
WO2000023971A1 (en) 1998-10-20 2000-04-27 Schlumberger Industries Sa Lead seal assembly
JP2002046762A (en) 2000-08-04 2002-02-12 San Frend:Kk Temporary lid implement, apparatus for measuring temperature for food and method for heat sterilization

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