JPH0313827Y2 - - Google Patents
Info
- Publication number
- JPH0313827Y2 JPH0313827Y2 JP1984190628U JP19062884U JPH0313827Y2 JP H0313827 Y2 JPH0313827 Y2 JP H0313827Y2 JP 1984190628 U JP1984190628 U JP 1984190628U JP 19062884 U JP19062884 U JP 19062884U JP H0313827 Y2 JPH0313827 Y2 JP H0313827Y2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- shape memory
- memory alloy
- alarm
- buzzer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 38
- 239000000203 mixture Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000013459 approach Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Fire-Detection Mechanisms (AREA)
- Emergency Alarm Devices (AREA)
- Thermally Actuated Switches (AREA)
Description
【考案の詳細な説明】
(イ) 産業上の利用分野
この考案は物体の温度を監視し、所定の警戒温
度に到達した時に警報を発する温度警報ブザーに
関するものである。[Detailed description of the invention] (a) Industrial application field This invention relates to a temperature alarm buzzer that monitors the temperature of an object and issues an alarm when a predetermined warning temperature is reached.
(ロ) 従来の技術
形状記憶合金はニツケル−チタン、銅−亜鉛等
の合金で、高温で成形された時の形状を記憶して
おり、外力によつて変形された後も所定温度以上
に加熱されると元の形状に復帰するという特性を
有している。この形状記憶合金が原形に復帰する
温度は合金の素材やその成分比によつて微妙に変
化するので、この特性を利用して様々の用途が考
えられている。たとえば温室の内部温度を調節す
るための窓の自動開閉装置が実用化されている
他、ロボツトのアクチユエータや温度スイツチと
して使用すること等が考えられている。(b) Conventional technology Shape memory alloys are alloys of nickel-titanium, copper-zinc, etc. that remember their shape when formed at high temperatures, and even after being deformed by external force, they can be heated to a predetermined temperature or higher. It has the property of returning to its original shape when it is removed. The temperature at which this shape memory alloy returns to its original shape varies slightly depending on the material of the alloy and its component ratio, so a variety of applications are being considered to take advantage of this property. For example, automatic window opening/closing devices have been put into practical use to adjust the internal temperature of greenhouses, and use as robot actuators and temperature switches is being considered.
一方、たとえば化学プラント等においてはパイ
プラインの要所要所に温度測定点を設け、温度を
監視する必要がある。これは異常反応等の現象を
温度変化として逸早くキヤツチし、爆発事故等に
よつてプラントが破壊されるのを未然に防止する
ためである。 On the other hand, in chemical plants and the like, for example, it is necessary to provide temperature measurement points at important points along pipelines and monitor the temperature. This is to quickly catch phenomena such as abnormal reactions as temperature changes, and to prevent the plant from being destroyed due to explosions, etc.
(ハ) 考案が解決しようとする問題点
一般に化学プラント等の施設は広大な面積に分
散しており、そのあらゆる地点に設けられた測定
点の温度を中央で集中して監視するためには膨大
な設備投資が必要であり、また各測定点を順次巡
回していちいち温度を読み取つていたのでは緊急
の事態に対処することができないだけでなく、人
的な労力も甚大である。(c) Problems that the invention aims to solve Generally, facilities such as chemical plants are scattered over a vast area, and it would take a huge amount of time to centrally monitor the temperature at measurement points installed at all locations. This method requires a large amount of equipment investment, and if the temperature is read one by one by visiting each measuring point one by one, it is not only impossible to deal with an emergency situation, but also requires a tremendous amount of human effort.
また、化学プラント等では、所定の警戒温度に
近づいたのをいち早く予知して温度を低下させる
手段を施したり、電気的事故等が発生しても確実
に報知できるようにして、緊急の事態発生を確実
に防止できることが要望されている。 In addition, in chemical plants, etc., measures are taken to quickly predict when the temperature approaches a predetermined warning temperature and lower the temperature, and to ensure that even if an electrical accident occurs, it can be reliably notified in the event of an emergency situation. It is desired to be able to reliably prevent this.
本考案は、このような従来の要望に留意してな
されたものであり、所定の警報温度に達した時の
警報だけでなく、警報温度に近づいた時に予報を
発することができるとともに、その警報を確実且
つ正確に報知でき、小型且つ安価な温度警報ブザ
ーを提供することを技術的課題とするものであ
る。 The present invention has been made with these conventional demands in mind, and it is possible to issue not only an alarm when a predetermined alarm temperature is reached, but also a forecast when the alarm temperature approaches, and also to issue a forecast when the alarm temperature approaches. The technical object is to provide a small and inexpensive temperature alarm buzzer that can reliably and accurately notify the temperature.
(ニ) 課題を解決するめの手段
本考案は、上記課題を達成するための技術的手
段として、温度警報ブザーを次のように構成し
た。即ち、第１の温度で原形に復帰する第１の形
状記憶合金と、前記第１の温度より高い第２の温
度で原形に復帰する第２の形状記憶合金と、前記
第１の形状記憶合金が原形に復帰する際の復元力
によりオン状態となつて電源および予報用ブザー
部が直列接続された予報用回路を閉成する第１の
スイツチ部と、前記第２の形状記憶合金が原形に
復帰する際の復元力によりオン状態となつて電源
および警報用ブザー部が直列接続された警報用回
路を閉成する第２のスイツチ部と、前記第１の形
状記憶合金の原形復元力により表示位置に移動さ
れる予報用標識板と、前記第２の形状記憶合金の
原形復元力により表示位置に移動される警報用標
識板とを具備したことを特徴として構成されてい
る。(d) Means for solving the problems In the present invention, as a technical means for achieving the above problems, a temperature alarm buzzer is configured as follows. That is, a first shape memory alloy that returns to its original shape at a first temperature, a second shape memory alloy that returns to its original shape at a second temperature higher than the first temperature, and the first shape memory alloy. A first switch part that is turned on by the restoring force when it returns to its original shape and closes a forecasting circuit in which a power supply and a forecasting buzzer part are connected in series, and the second shape memory alloy return to their original shape. A second switch part that is turned on by the restoring force when returning to the original state and closes an alarm circuit in which a power supply and an alarm buzzer part are connected in series, and an indication by the restoring force of the first shape memory alloy to its original shape. The present invention is characterized by comprising a forecast sign board that is moved to the display position, and a warning sign board that is moved to the display position by the restoring force of the second shape memory alloy.
(ホ) 作用
形状記憶合金はその組成によつて特定される温
度において正確に原形に復帰する。従つて、第２
の形状記憶合金として、測温対象物の所定の警戒
温度に応じた組成のものを選択し、第１の形状記
憶合金として、前記警戒温度より少し低い温度に
応じた組成のものを選択しておけば、測温対象物
が警戒温度に近づいた時点で第１の形状記憶合金
が原形に復帰し、この合金の原形復元力により第
１のスイツチ部が自動的にオンとなつて予報用回
路が閉成され、予報用ブザー部が鳴動して警戒温
度に近づいたのを直ちに察知することができ、温
度低下の措置をとることができる。またそれと同
時に、第１の形状記憶合金の原形復元力により予
報用標識板が表示位置に移動されて視覚的に表示
されるので、仮に予報用ブザー部が故障したり、
電源の寿命がきれる等の電気的な事故が発生した
場合にも標識板の表示により確実に報知すること
ができ、化学プラント等の警報装置にとつて不可
欠な安全報知構造となる。(E) Function Shape memory alloys accurately return to their original shape at a temperature specified by their composition. Therefore, the second
As the first shape memory alloy, one with a composition corresponding to a predetermined warning temperature of the object to be measured is selected, and as the first shape memory alloy, one with a composition corresponding to a temperature slightly lower than the warning temperature is selected. Then, when the object to be measured approaches the alarm temperature, the first shape memory alloy returns to its original shape, and the first switch part is automatically turned on due to the restoring force of this alloy, and the forecasting circuit is turned on. is closed and the forecasting buzzer sounds, allowing you to immediately detect when the temperature is approaching the warning temperature and take measures to lower the temperature. At the same time, the forecast sign board is moved to the display position and visually displayed due to the original shape restoring force of the first shape memory alloy, so if the forecast buzzer section malfunctions,
Even in the event of an electrical accident such as the end of a power supply's lifespan, it can be reliably notified by displaying on a sign board, making it an indispensable safety notification structure for alarm devices in chemical plants and the like.
警戒温度に近づいたことの報知にもかかわらず
温度低下手段がとられなかつた場合には、警戒温
度に達した時点で第２の形状記憶合金が原形に復
帰して第２のスイツチ部部をオンし且つ警報用識
別板を表示位置に移動するので、二重安全構造と
なる。 If no measures are taken to lower the temperature despite being informed that the warning temperature has been reached, the second shape memory alloy will return to its original shape and close the second switch portion when the warning temperature is reached. Since it is turned on and the alarm identification plate is moved to the display position, it has a double safety structure.
(ヘ) 実施例
以下図示された実施例にもとづきて本考案を詳
細に説明する。(F) Embodiments The present invention will be explained in detail below based on the illustrated embodiments.
図は本考案による温度警報ブザーの一実施例を
示す概念図で、図示していないパイプライン等の
測温対象に密接して取り付けられ、あるいは粘着
テープ等で貼付される基板１は熱伝導率の優れた
アルミ板等である。基板１上にそれぞれの一端を
接触させた原形復帰温度のことなる第１および第
２の形状記憶合金２，２′は、何れもバネ状に成
形されており、外力が加えられて伸長した状態に
ある。これらの形状記憶合金２，２′はその組成
によつて原形に復帰する温度が異なつており、た
とえばニツケル50、チタン50％の場合は80℃、ま
たニツケル49.9％、チタン50.1％の場合に70℃で
ある。したがつて、いま、第２の形状記憶合金
２′として、測温対象物の警戒温度に応じた組成
のものを選択し、第１の形状記憶合金２として、
警戒温度より僅かに低い温度に応じた組成もの選
択しておくと、測温対象物の温度は基板１を介し
て速やかに形状記憶合金２，２′に伝達されるの
で、測温対象物の温度が上昇して警戒温度より低
い予報用温度に達すると第１の形状記憶合金２が
原形に復帰して収縮する。この際の復元力がテコ
を介して第１のスイツチ部４をオンさせ、電源
６、圧電ブザーからなる予報用ブザー部５および
補助スイツチ１０が直列接続された予報回路を閉
成し、予報用ブザー部５を鳴動させて予報温度に
達したことを予報すると共に、予報用温度等が表
示された予報用標識板７が表示窓９に移動させて
視覚的に表示する。 The figure is a conceptual diagram showing an embodiment of the temperature alarm buzzer according to the present invention. It is an excellent aluminum plate etc. The first and second shape memory alloys 2 and 2', which have different original shape recovery temperatures and have one end in contact with the substrate 1, are both formed into a spring shape, and are in an expanded state when an external force is applied. It is in. The temperature at which these shape memory alloys 2 and 2' return to their original shapes differs depending on their composition; for example, the temperature at which they return to their original shape is 80°C for 50% nickel and 50% titanium, and 70°C for 49.9% nickel and 50.1% titanium. It is ℃. Therefore, as the second shape memory alloy 2', one with a composition corresponding to the warning temperature of the object to be measured is selected, and as the first shape memory alloy 2,
If a composition suitable for a temperature slightly lower than the warning temperature is selected, the temperature of the object to be measured will be quickly transferred to the shape memory alloys 2 and 2' via the substrate 1, so that the temperature of the object to be measured will be When the temperature rises and reaches the forecast temperature lower than the warning temperature, the first shape memory alloy 2 returns to its original shape and contracts. The restoring force at this time turns on the first switch section 4 via the lever, and closes the forecast circuit in which the power source 6, the forecast buzzer section 5 consisting of a piezoelectric buzzer, and the auxiliary switch 10 are connected in series, and the forecast circuit is closed. A buzzer unit 5 is sounded to predict that the forecast temperature has been reached, and a forecast sign board 7 on which the forecast temperature, etc. is displayed is moved to a display window 9 to visually display it.
そして、予報用温度に達したことの報知にもか
かわらず温度低下の措置がとられず、測温対象物
の温度が更に上昇して警戒温度に達すると、第２
の形状記憶合金２′が原形に復帰して収縮する。
この際の復元力がテコを介して補助スイツチ部１
０をオフさせて予報用回路を開成し、予報用ブザ
ー部９の駆動が停止され、且つ第２のスイツチ部
４′をオンさせて電源６、圧電ブザーからなる警
報用ブザー部５′が直列接続された警報用回路を
閉成し、予報用ブザー部５とは音色の異なる警報
用ブザー部５を鳴動させて警報温度に達したこと
を報知すると共に、警報用温度等が予報用温度と
は異なる色彩で表示された警報用標識板７′が表
示窓９′に移動されて視覚的に表示する。 If no measures are taken to lower the temperature despite notification that the forecast temperature has been reached, and the temperature of the object to be measured further rises and reaches the warning temperature, a second
The shape memory alloy 2' returns to its original shape and contracts.
The restoring force at this time is applied to the auxiliary switch part 1 through the lever.
0 is turned off to open the forecasting circuit, the driving of the forecasting buzzer section 9 is stopped, and the second switch section 4' is turned on to connect the power supply 6 and the alarming buzzer section 5' consisting of a piezoelectric buzzer in series. The connected alarm circuit is closed, and the alarm buzzer unit 5, which has a different tone from the forecast buzzer unit 5, sounds to notify that the alarm temperature has been reached, and the alarm temperature, etc. is the same as the forecast temperature. A warning sign board 7' displayed in different colors is moved to the display window 9' to visually display the warning sign board 7'.
本考案は前記実施例に限定されるものではな
い。たとえば、前記実施例においては測温対象の
温度を基板を介して形状記憶合金に伝達させると
したが、基板を設けずに直接測温対象に形状記憶
合金を接触させるよう構成することもでき、また
形状記憶合金自体を馬蹄形等の接点として回路の
開閉を直接制御することもできる。さらにはテコ
の支点を中心として形状記憶合金とは反対方向に
バネ等の弾性部材を配設し、この弾性部材の張力
によつて形状記憶合金を変形させるよう構成する
ことも勿論可能であり、この場合には測温対象の
温度が下つて形状記憶合金が復元力を失うと警報
ブザーが発報を停止するので、形状記憶合金を複
数配設して予報と警報を使い分ける場合など一層
効果的である。 The present invention is not limited to the above embodiments. For example, in the above embodiment, the temperature of the object to be measured is transmitted to the shape memory alloy through the substrate, but it is also possible to have a structure in which the shape memory alloy is brought into direct contact with the object to be measured without providing the substrate. It is also possible to directly control the opening and closing of a circuit by using the shape memory alloy itself as a horseshoe-shaped contact. Furthermore, it is of course possible to arrange an elastic member such as a spring in the opposite direction to the shape memory alloy around the fulcrum of the lever, and to deform the shape memory alloy by the tension of this elastic member. In this case, the alarm buzzer will stop sounding when the temperature of the object to be measured falls and the shape memory alloy loses its restoring force, making it even more effective when multiple shape memory alloys are installed and used for forecasts and alarms. It is.
(ト) 効果
以上詳述したとおり、本考案による温度警報ブ
ザーは形状記憶合金がその組成によつて特定され
る所定温度で正確に原形に復帰するという特性を
利用して、警戒温度に対応する組成の形状記憶合
金と警戒温度より低い予報温度に対応する組成の
形状記憶合金とにより測温対象物の温度を精密に
監視するとともに、各形状記憶合金の原形復元力
によりスイツチ部および標識板をそれぞれ作動さ
せてブザー部の鳴動および標識板による視覚的表
示により予報および警報を行うようにしたので、
警戒温度に近づいたことの予報と警戒温度に達し
たとの報知とを確実に行うことができるととも
に、電気的故障が発生した場合にも標識板による
視覚的表示で報知することができ、小型で且つ安
価な構成でありながら万が一の場合の二重安全対
策が完備した正確で確実な信頼性の高い温度警報
ブザーを提供できる。(G) Effects As detailed above, the temperature alarm buzzer according to the present invention responds to warning temperatures by utilizing the property of shape memory alloys that accurately return to their original shape at a predetermined temperature specified by their composition. The temperature of the object to be measured is precisely monitored by using a shape memory alloy with a composition that corresponds to a predicted temperature lower than the warning temperature, and the switch part and sign plate are By activating each, forecasts and warnings are issued through the sound of the buzzer and the visual display on the sign board.
It is possible to reliably forecast that the warning temperature is approaching and notify that the warning temperature has been reached, and even in the event of an electrical failure, it can be notified visually with a sign board. To provide an accurate, reliable, and highly reliable temperature alarm buzzer that is complete with double safety measures in case of an emergency, even though it has an inexpensive configuration.
従つて、本考案は化学プラント等の異常反応の
早期発見や高圧配電設備の絶縁不良による火災防
止等の発生してはならない重大な事故の防止用に
用いて極めて顕著な効果を得るものである。 Therefore, the present invention can be used for early detection of abnormal reactions in chemical plants, etc., and for preventing serious accidents that should not occur, such as preventing fires due to poor insulation in high-voltage power distribution equipment. .
図は本考案の位置実施例の概略構成図である。
２……第１の形状記憶合金、２′……第２の形
状記憶合金、４……第１のスイツチ部、４′……
第２のスイツチ部、５……予報用ブザー部、５′
……警報用ブザー部、６……電源、７……予報用
標識板、７′……警戒用標識板、９，９′……表示
窓。
The figure is a schematic diagram of an embodiment of the present invention. 2...First shape memory alloy, 2'...Second shape memory alloy, 4...First switch part, 4'...
Second switch section, 5... Forecast buzzer section, 5'
...Warning buzzer unit, 6...Power source, 7...Forecast sign board, 7'...Warning sign board, 9,9'...Display window.
Claims (1)
金と、前記第１の温度より高い第２の温度で原形
に復帰する第２の形状記憶合金と、前記第１の形
状記憶合金が原形に復帰する際の復元力によりオ
ン状態となつて電源および予報用ブザー部が直列
接続された予報用回路を閉成する第１のスイツチ
部と、前記第２の形状記憶合金が原形に復帰する
際の復元力によりオン状態となつて電源および警
報用ブザー部が直列接続された警報用回路を閉成
する第２のスイツチ部と、前記第１の形状記憶合
金の原形復元力により表示位置に移動される予報
用標識板と、前記第２の形状記憶合金の原形復元
力により表示位置に移動される警報用標識板とを
具備したことを特徴とする温度警報ブザー。 a first shape memory alloy that returns to its original shape at a first temperature; a second shape memory alloy that returns to its original shape at a second temperature higher than the first temperature; and a second shape memory alloy that returns to its original shape at a second temperature higher than the first temperature; The first switch part that is turned on by the restoring force when returning to the original state and closes the forecasting circuit in which the power supply and the forecasting buzzer part are connected in series, and the second shape memory alloy return to their original shapes. a second switch part that is turned on by the restoring force of the first shape memory alloy and closes an alarm circuit in which the power supply and the alarm buzzer part are connected in series; A temperature alarm buzzer comprising: a forecast sign board that is moved; and an alarm sign board that is moved to a display position by the restoring force of the second shape memory alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984190628U JPH0313827Y2 (en) | 1984-12-14 | 1984-12-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984190628U JPH0313827Y2 (en) | 1984-12-14 | 1984-12-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61107096U JPS61107096U (en) | 1986-07-07 |
| JPH0313827Y2 true JPH0313827Y2 (en) | 1991-03-28 |
Family
ID=30748079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984190628U Expired JPH0313827Y2 (en) | 1984-12-14 | 1984-12-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0313827Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007051372A (en) * | 2005-08-10 | 2007-03-01 | Waertsilae Schweiz Ag | Product including means for protecting high-temperature corrosion, reciprocal piston combustion engine having the product, turbine or combustion unit, and use of the means |
| JP2008545971A (en) * | 2005-06-02 | 2008-12-18 | リッテルフューズ，インコーポレイティド | Overheat protection devices, applications and circuits |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2547267Y2 (en) * | 1990-11-30 | 1997-09-10 | 古河電気工業株式会社 | Temperature monitoring device |
| JP2005227149A (en) * | 2004-02-13 | 2005-08-25 | Tlv Co Ltd | Temperature indicator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5027878B2 (en) * | 1971-11-08 | 1975-09-10 | ||
| JPS56390U (en) * | 1979-06-15 | 1981-01-06 | ||
| JPS5843125A (en) * | 1981-09-04 | 1983-03-12 | 日立電線株式会社 | Connector of electric circuit with malfunction heat detecting function |
| JPS58206022A (en) * | 1982-05-25 | 1983-12-01 | 株式会社東芝 | Thermally reversible responding actuator |
| JPS5914736B2 (en) * | 1974-05-29 | 1984-04-05 | アメリカン ヘキスト コ−ポレイシヨン | Multicolor test print manufacturing method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5027878U (en) * | 1973-07-05 | 1975-03-31 | ||
| JPS5692290U (en) * | 1979-12-19 | 1981-07-22 | ||
| JPS6310538Y2 (en) * | 1981-05-21 | 1988-03-29 | ||
| JPS5914736U (en) * | 1982-07-20 | 1984-01-28 | 株式会社日立ホームテック | car alarm system |
-
1984
- 1984-12-14 JP JP1984190628U patent/JPH0313827Y2/ja not_active Expired
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5027878B2 (en) * | 1971-11-08 | 1975-09-10 | ||
| JPS5914736B2 (en) * | 1974-05-29 | 1984-04-05 | アメリカン ヘキスト コ−ポレイシヨン | Multicolor test print manufacturing method |
| JPS56390U (en) * | 1979-06-15 | 1981-01-06 | ||
| JPS5843125A (en) * | 1981-09-04 | 1983-03-12 | 日立電線株式会社 | Connector of electric circuit with malfunction heat detecting function |
| JPS58206022A (en) * | 1982-05-25 | 1983-12-01 | 株式会社東芝 | Thermally reversible responding actuator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008545971A (en) * | 2005-06-02 | 2008-12-18 | リッテルフューズ，インコーポレイティド | Overheat protection devices, applications and circuits |
| JP2007051372A (en) * | 2005-08-10 | 2007-03-01 | Waertsilae Schweiz Ag | Product including means for protecting high-temperature corrosion, reciprocal piston combustion engine having the product, turbine or combustion unit, and use of the means |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61107096U (en) | 1986-07-07 |
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