CA1064140A - Temperature sensing transmission line with ferromagnetic material - Google Patents
Temperature sensing transmission line with ferromagnetic materialInfo
- Publication number
- CA1064140A CA1064140A CA231,029A CA231029A CA1064140A CA 1064140 A CA1064140 A CA 1064140A CA 231029 A CA231029 A CA 231029A CA 1064140 A CA1064140 A CA 1064140A
- Authority
- CA
- Canada
- Prior art keywords
- detecting
- temperature variation
- reflection
- electrical circuit
- ferromagnetic material
- 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
- 239000003302 ferromagnetic material Substances 0.000 title claims abstract description 39
- 230000005540 biological transmission Effects 0.000 title claims description 5
- 239000004020 conductor Substances 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 claims abstract description 35
- 238000009413 insulation Methods 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 25
- 229910000859 α-Fe Inorganic materials 0.000 claims description 18
- 229910001035 Soft ferrite Inorganic materials 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 10
- 239000012774 insulation material Substances 0.000 claims description 8
- 239000011810 insulating material Substances 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000005065 mining Methods 0.000 claims 1
- 229920000136 polysorbate Polymers 0.000 claims 1
- 230000005291 magnetic effect Effects 0.000 description 15
- 230000035699 permeability Effects 0.000 description 11
- 230000005294 ferromagnetic effect Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 230000005298 paramagnetic effect Effects 0.000 description 6
- 239000003989 dielectric material Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000003949 liquefied natural gas Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000002592 echocardiography Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 229910052596 spinel Inorganic materials 0.000 description 3
- 239000011029 spinel Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000002844 continuous effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- -1 iron ions Chemical class 0.000 description 2
- 239000003915 liquefied petroleum gas Substances 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000011236 particulate material Substances 0.000 description 2
- 229910003962 NiZn Inorganic materials 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005680 Thomson effect Effects 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000004078 cryogenic material Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000005293 ferrimagnetic effect Effects 0.000 description 1
- 230000005307 ferromagnetism Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- WJZHMLNIAZSFDO-UHFFFAOYSA-N manganese zinc Chemical compound [Mn].[Zn] WJZHMLNIAZSFDO-UHFFFAOYSA-N 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 150000001455 metallic ions Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000005408 paramagnetism Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002311 subsequent effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
- G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/186—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for containers, e.g. radiators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
- F17C13/126—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures for large storage containers for liquefied gas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/36—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using magnetic elements, e.g. magnets, coils
- G01K7/38—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using magnetic elements, e.g. magnets, coils the variations of temperature influencing the magnetic permeability
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/002—Investigating fluid-tightness of structures by using thermal means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/11—Locating faults in cables, transmission lines, or networks using pulse reflection methods
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
- H01B11/1834—Construction of the insulation between the conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/08—Flat or ribbon cables
- H01B7/0807—Twin conductor or cable
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/0439—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/06—Controlling or regulating of parameters as output values
- F17C2250/0605—Parameters
- F17C2250/0631—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/03—Dealing with losses
- F17C2260/035—Dealing with losses of fluid
- F17C2260/038—Detecting leaked fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/04—Reducing risks and environmental impact
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K3/00—Thermometers giving results other than momentary value of temperature
- G01K3/08—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values
- G01K3/14—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values in respect of space
- G01K2003/145—Hotspot localization
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K2007/166—Electrical time domain reflectometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2203/00—Application of thermometers in cryogenics
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Locating Faults (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3049574A GB1465515A (en) | 1974-07-10 | 1974-07-10 | Detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1064140A true CA1064140A (en) | 1979-10-09 |
Family
ID=10308575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA231,029A Expired CA1064140A (en) | 1974-07-10 | 1975-07-08 | Temperature sensing transmission line with ferromagnetic material |
Country Status (9)
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4349282A (en) | 1977-02-08 | 1982-09-14 | Spill-Fire Alarm Systems Ltd. | Transducers |
| DE3175500D1 (en) * | 1980-06-23 | 1986-11-27 | Toshiba Kk | Apparatus for detecting the local temperature variations of an object and the sites of the temperature variations |
| CA1171933A (en) * | 1980-06-23 | 1984-07-31 | Yasushi Wakahara | Apparatus for detecting the local temperature variations of an object and the sites of the temperature variations |
| DE3125388A1 (de) * | 1981-06-27 | 1983-01-13 | Battelle-Institut E.V., 6000 Frankfurt | "verfahren und vorrichtung zur kontinuierlichen ueberwachung von fluide medien enthaltenden anlagen" |
| DE3232211C2 (de) * | 1982-08-30 | 1991-10-24 | Bernd 2420 Eutin Brandes | Mediumtransportleitung |
| US5382909A (en) * | 1983-06-30 | 1995-01-17 | Raychem Corporation | Method for detecting and obtaining information about changes in variables |
| JPS6048134U (ja) * | 1983-09-09 | 1985-04-04 | 株式会社 潤工社 | 温度検知装置 |
| US4926165A (en) * | 1985-10-15 | 1990-05-15 | Raychem Corporation | Devices for detecting and obtaining information about an event |
| DE3687819T2 (de) * | 1985-06-12 | 1993-06-09 | Raychem Corp | Kohlenwasserstoffsensor. |
| US5179342A (en) * | 1991-02-11 | 1993-01-12 | Westinghouse Electric Corp. | Superconductor quench measuring device which evaluates reflected pulses |
| US5185594A (en) * | 1991-05-20 | 1993-02-09 | Furon Company | Temperature sensing cable device and method of making same |
| US5389875A (en) * | 1993-03-19 | 1995-02-14 | Grumman Aerospace Corporation | Apparatus for non-destructive testing of dielectric/magnetic materials |
| US5648724A (en) * | 1996-02-08 | 1997-07-15 | U.S. Army Corps Of Engineers As Represented By The Secretary Of The Army | Metallic time-domain reflectometry roof moisture sensor |
| US20050260331A1 (en) * | 2002-01-22 | 2005-11-24 | Xingwu Wang | Process for coating a substrate |
| WO2009046751A1 (de) * | 2007-10-02 | 2009-04-16 | Abb Research Ltd | Verfahren zur bestimmung der temperaturverteilung entlang eines leiters |
| NO334578B1 (no) | 2009-02-13 | 2014-04-14 | Asle Johnsen | System for målinger med perler |
| US8066431B2 (en) * | 2009-03-20 | 2011-11-29 | Lockheed Martin Corporation | Cable temperature monitor |
| US10101218B2 (en) * | 2014-06-18 | 2018-10-16 | Kidde Technologies, Inc. | Thermal sensor |
| FR3029295B1 (fr) * | 2014-12-01 | 2016-12-30 | Win Ms | Procede et dispositif de detection de points chauds dans une installation, notamment pour la detection de fuites dans des conduits d'air. |
| DE102019200862B4 (de) * | 2019-01-24 | 2024-01-18 | Audi Ag | Kabelanordnung zum Transport von Drehstrom |
| CN109612600B (zh) * | 2019-01-31 | 2024-10-22 | 珠海艾文科技有限公司 | 基于居里温度跳变的光纤传感探头以及光纤传感系统 |
| FR3119653B1 (fr) * | 2021-02-06 | 2024-04-19 | Schulz Jean Michel | Dispositif flexible de supportage des organes internes d’un réservoir ou d’une ligne cryogénique embarqué. |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2615973A (en) * | 1950-04-07 | 1952-10-28 | Samuel Scrivener Jr | Temperature responsive detector system |
| US2926343A (en) * | 1956-10-11 | 1960-02-23 | Mc Graw Edison Co | Curie point fire detector cable |
| NL258963A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1959-12-12 | |||
| FR1300762A (fr) * | 1961-03-31 | 1962-08-10 | Du Pont | Dispositif de transformation de diverses formes d'énergie |
| FR82223E (fr) * | 1961-06-22 | 1964-01-10 | Ibm | Système de correction d'erreurs |
| DE1227164B (de) * | 1965-06-24 | 1966-10-20 | Euratom | Kernreaktorueberwachungseinrichtung zur UEberwachung von thermischen Isolierschichten |
| US3510762A (en) * | 1967-04-14 | 1970-05-05 | John Robert Alexander Leslie | Electrical cable temperature monitoring and hot-spot locating system and method utilizing a transmission line having a liquid dielectric |
| US3588689A (en) * | 1969-06-16 | 1971-06-28 | Harry F Crawford | Variable impedance system for electrical cable fault locating and temperature monitoring |
-
1974
- 1974-07-10 GB GB3049574A patent/GB1465515A/en not_active Expired
-
1975
- 1975-07-08 SE SE7507836A patent/SE7507836L/ unknown
- 1975-07-08 CA CA231,029A patent/CA1064140A/en not_active Expired
- 1975-07-08 DE DE19752530444 patent/DE2530444A1/de not_active Withdrawn
- 1975-07-08 FR FR7521398A patent/FR2292962A1/fr active Granted
- 1975-07-08 NO NO752442A patent/NO752442L/no unknown
- 1975-07-08 JP JP50083212A patent/JPS5149074A/ja active Pending
- 1975-07-08 US US05/594,161 patent/US4023412A/en not_active Expired - Lifetime
- 1975-07-09 NL NL7508151A patent/NL7508151A/xx not_active Application Discontinuation
-
1978
- 1978-06-14 SE SE7806881A patent/SE7806881L/xx unknown
-
1980
- 1980-03-18 NO NO800782A patent/NO800782L/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NO752442L (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-01-13 |
| DE2530444A1 (de) | 1976-01-29 |
| NL7508151A (nl) | 1976-01-13 |
| JPS5149074A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-04-27 |
| US4023412A (en) | 1977-05-17 |
| SE7507836L (sv) | 1976-01-12 |
| FR2292962A1 (fr) | 1976-06-25 |
| FR2292962B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1978-12-29 |
| NO800782L (no) | 1976-01-13 |
| GB1465515A (en) | 1977-02-23 |
| SE7806881L (sv) | 1978-06-14 |
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