EP3888114B1 - Electro thermal fuse - Google Patents
Electro thermal fuse Download PDFInfo
- Publication number
- EP3888114B1 EP3888114B1 EP18836667.8A EP18836667A EP3888114B1 EP 3888114 B1 EP3888114 B1 EP 3888114B1 EP 18836667 A EP18836667 A EP 18836667A EP 3888114 B1 EP3888114 B1 EP 3888114B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- conductor
- fuse
- electric
- spring
- casing
- 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.)
- Active
Links
- 239000004020 conductor Substances 0.000 claims description 50
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- 229910000679 solder Inorganic materials 0.000 claims description 18
- 239000000945 filler Substances 0.000 claims description 15
- 230000008018 melting Effects 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 10
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000003179 granulation Effects 0.000 description 3
- 238000005469 granulation Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
- H01H85/08—Fusible members characterised by the shape or form of the fusible member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/36—Means for applying mechanical tension to fusible member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/143—Electrical contacts; Fastening fusible members to such contacts
- H01H85/153—Knife-blade-end contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/165—Casings
- H01H85/17—Casings characterised by the casing material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/18—Casing fillings, e.g. powder
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/20—Bases for supporting the fuse; Separate parts thereof
- H01H85/203—Bases for supporting the fuse; Separate parts thereof for fuses with blade type terminals
Definitions
- the present invention refers to an electric thermal fuse, the features of which are presented in more detail in a subsequent description.
- Pursuant to the International Patent Classification such inventions belong to electricity, namely to basic electric components, in particular to electric switches and protecting components, in which the current flows through a part of melting material and is interrupted as soon as said melting material is displaced due to excessive current, wherein the casing is filled with a filling materiel in powder form. Consequently, such invention belongs to the class A 01 H 85/18.
- the underlying problem of the invention is how to create such electric thermal fuse, in which the electric circuit through the fuse is interrupted in a shortest possible time, as soon as even relatively high voltage or current is exceed, and regardless to position/orientation of the fuse, while at the same time it should also be assured that each generated electric arc, whenever occurs, would have any essential impact neither to the fuse nor to each surrounding area in the adjacency thereof.
- Electric thermal fuse is intended for protection of en electric circuit, and in particular of each particular components integrated therein, e.g. varistor fuses as well as of other over-voltage protecting components. This means that the electro thermal fuse react to a heat, which is sue to electric overloads generated either within the fuse as such or also in each neighboring electric components within the same electric circuit.
- Such fuse is disclosed in JP 2016-162683 A and comprises a tubular casing, which consists of an electric insulating material and is on its both terminal portions furnished with contact members, by means of which said fuse is electrically connectable to each disposable electric circuit.
- An electric conductor extends through the passage within said casing, and is by means of solder connected on the one hand with one of said contact members and on the other hand with a tension helical spring, which is attached to the other contact member.
- solder connected on the one hand with one of said contact members and on the other hand with a tension helical spring, which is attached to the other contact member.
- Said solder is then molten at a pre-determined temperature, upon which said interconnection between said conductor and corresponding contact member is interrupted, and the connector is by means of said spring displaced apart from said contact member.
- such displacement of the conductor apart from the contact member results in formation of a very intensive arc, which may quickly and seriously damage the casing and objects in the neighborhood of the fuse, or initiate the fire.
- Electro thermal fuse comprises a tubular casing consisting of electric insulating material, which is on each of its terminal portions closed by a cover, which is also functioning as a contact member consisting of an electric conductive material, which is suitable for integration of the fuse into each disposable electric circuit.
- An electric conductor is inserted throughout the passage within said hollow casing and is during the normal operation of the fuse, namely when the electric current is allowed to flow through said electric conductor, via at least one contact established by solder electrically interconnected with said contact members, but is in the case of the electric overload within said circuit and generated heat and consequently melting and interruption of said at least one soldered contact displaceable away from at least one of said contact members by means of a spring, by which the electric current through the fuse is then interrupted.
- tubular casing consists of ceramics
- each of said contact members is furnished with a centrally arranged through passage, so that the electric conductor is inserted through said passages within said contact members and is by means of solder, which is located on the external side of the fuse, firmly and electric conductively connected with each of said contact members.
- Said conductor is in the one terminal area of the fuse extended and ended with appropriate thicker portion, so that a spring is placed around said conductor and is inserted between said thicker portion and the belonging contact member with said solder.
- Each residual volume within said passage in the casing of the fuse namely the area between said conductor and the casing as well as between said contact members, is filled with a pre-determined quantity of arc preventing filler on the basis of properly granulated silica.
- said conductor is a wire consisting of copper and having a pre-determined circular cross-section
- an said spring is a compression helical spring.
- a washer which is suitable for supporting said spring, can be inserted between said spring and said thicker portion on the conductor.
- a suitable quantity of filler on the basis of properly granulated silica is determined in such manner is such, that the volume of the filler as such corresponds to 90% of the whole disposable volume around the conductor within said passage within the casing.
- Said solder which is foreseen for connection of the conductor with each corresponding contact member, is selected in such manner that its melting point is adjusted within the range 105 - 115°C.
- Electro thermal fuse generally, and also in the embodiment according to Figs. 1 - 3 , comprises a tubular casing 1, which is made of an electric insulating material, and is on each of its terminal portions 11, 12 closed by a cover, which is in fact also functioning as a contact member 110, 120 consisting of an electric conductive material, which is suitable for integration of the fuse into each disposable electric circuit.
- An electric conductor 2 is inserted throughout the passage 10 within said hollow casing 1.
- Said conductor 2 is during the normal operation of the fuse, namely when the electric current is allowed to flow through said electric conductor 2, via at least one soldered contact 3, 3' electrically interconnected with said contact members 110, 120, but is in the case of the electric overload within said circuit and generated heat and consequently melting and interruption of said at least one soldered contact 3, 3' displaceable away from at least one of said contact members 110, 120 by means of a spring 4, by which then the electric current through the fuse is then interrupted.
- tubular casing 1 consists of ceramics, and is therefore not only electric insulating but also highly temperature resistant and inflammable.
- Each of said contact members 110, 120 is furnished with at least approximately centrally arranged throughout passage 111, 121, so that said electric conductor 2 is inserted through said passages 111, 121 within said contact members 110, 120 and is by means of solder 3, 3', which is located on the external side of the fuse, firmly and electric conductively connected with each of said contact members 110, 120.
- Said conductor 2 is in the one terminal area of the fuse extended and ended with appropriately thicker portion 20, so that a spring 4 can be placed around said conductor 2 and is then jammed between said thicker portion 20 and the belonging contact member 120 with said solder 3'.
- Each residual volume within said passage 10 in the casing 1 of the fuse namely the area between said conductor 2 and the casing 1 as well as between said contact members 110, 120, is filled with a pre-determined quantity of arc preventing filler 5 of the basis of silica, wherein the granulation of the last is preferably 0,2 to 0,4 mm.
- Quantity of said filler 5 on the basis of silica is determined in such manner, that the volume of the filler 5 as such corresponds to approximately 90% of the whole disposable volume around the conductor 2 within said passage 10 within the casing 1.
- said spring 4 is a compression helical spring, and a washer 6, which is suitable for supporting said spring 4, is inserted between said spring 4 and said thicker portion 20 on the conductor 2.
- a washer 6 which is suitable for supporting said spring 4
- said thicker portion 20 can be easily realized by locally flattening said conductor 2, by which said spring 4 is maintained in compressed state until the solder 3, 3' is molten.
- said conductor 2 is a wire consisting of copper and having a pre-determined circular cross-section of e.g. 1,5 mm 2 .
- a pre-determined circular cross-section of e.g. 1,5 mm 2 For such conductor 2 it is then quite satisfactory, if the diameter of passages 111, 121 in said contact members 110, 120 is approximately 1,5 mm.
- Suitable solder 3, 3' for connecting said conductor 2 with each belonging contact member 110, 120 is selected in such way, that its melting point is adjusted within the range 105 - 115°C, and e.g. for the purpose of protection of varistors in the adjacency substantially around 109 or 110°C.
- the electric current starts flowing through the first contact member 110, the solder 3, the electric conductor 2, the solder 3' and the second contact member 120.
- the electric conductor is surrounded with a filler 5.
- a pre-determined value which corresponds to the melting point of each solder 3, 3' like e.g. 105°C or e.g. 109°C, if chemical ingredients in the solder are correspondingly adjusted, the solder 3, 3' starts melting, upon which the previously compressed spring 4 may be released, which then results in displacement of the conductor away from at least one contact member 110, 120.
- each disposal volume within the casing 1, namely between the last and the conductor 2 is properly i.e. in certain extent filled by a filler on the basis of silica. Adjusting each suitable granulation of sand in said filler 5 is important for two reasons. Namely, on the one hand is herewith prevented that by introduction of too much filler 5, the silica sand, which is in general quite similarly like ceramics resistant against high temperature and inflammable, by axially displacing the conductor 2 in each possible position of the fuse, e.g.
Description
- The present invention refers to an electric thermal fuse, the features of which are presented in more detail in a subsequent description. Pursuant to the International Patent Classification such inventions belong to electricity, namely to basic electric components, in particular to electric switches and protecting components, in which the current flows through a part of melting material and is interrupted as soon as said melting material is displaced due to excessive current, wherein the casing is filled with a filling materiel in powder form. Consequently, such invention belongs to the class A 01 H 85/18.
- The underlying problem of the invention is how to create such electric thermal fuse, in which the electric circuit through the fuse is interrupted in a shortest possible time, as soon as even relatively high voltage or current is exceed, and regardless to position/orientation of the fuse, while at the same time it should also be assured that each generated electric arc, whenever occurs, would have any essential impact neither to the fuse nor to each surrounding area in the adjacency thereof.
- Electric thermal fuse is intended for protection of en electric circuit, and in particular of each particular components integrated therein, e.g. varistor fuses as well as of other over-voltage protecting components. This means that the electro thermal fuse react to a heat, which is sue to electric overloads generated either within the fuse as such or also in each neighboring electric components within the same electric circuit. Such fuse is disclosed in
JP 2016-162683 A - Document
US2296627 discloses a device according to the preamble ofclaim 1. - Electro thermal fuse according to the invention comprises a tubular casing consisting of electric insulating material, which is on each of its terminal portions closed by a cover, which is also functioning as a contact member consisting of an electric conductive material, which is suitable for integration of the fuse into each disposable electric circuit. An electric conductor is inserted throughout the passage within said hollow casing and is during the normal operation of the fuse, namely when the electric current is allowed to flow through said electric conductor, via at least one contact established by solder electrically interconnected with said contact members, but is in the case of the electric overload within said circuit and generated heat and consequently melting and interruption of said at least one soldered contact displaceable away from at least one of said contact members by means of a spring, by which the electric current through the fuse is then interrupted.
- The invention provides that said tubular casing consists of ceramics, and each of said contact members is furnished with a centrally arranged through passage, so that the electric conductor is inserted through said passages within said contact members and is by means of solder, which is located on the external side of the fuse, firmly and electric conductively connected with each of said contact members. Said conductor is in the one terminal area of the fuse extended and ended with appropriate thicker portion, so that a spring is placed around said conductor and is inserted between said thicker portion and the belonging contact member with said solder. Each residual volume within said passage in the casing of the fuse, namely the area between said conductor and the casing as well as between said contact members, is filled with a pre-determined quantity of arc preventing filler on the basis of properly granulated silica.
- In a preferred embodiment of the invention said conductor is a wire consisting of copper and having a pre-determined circular cross-section, an said spring is a compression helical spring. Moreover, a washer, which is suitable for supporting said spring, can be inserted between said spring and said thicker portion on the conductor.
- A suitable quantity of filler on the basis of properly granulated silica is determined in such manner is such, that the volume of the filler as such corresponds to 90% of the whole disposable volume around the conductor within said passage within the casing. Said solder, which is foreseen for connection of the conductor with each corresponding contact member, is selected in such manner that its melting point is adjusted within the range 105 - 115°C.
- The invention will also be explained in more detail on the basis of an embodiment, which is presented in the attached drawings, in which
-
Fig. 1 is an electric thermal fuse in isometric view; -
Fig. 2 is the fuse according toFig. 1 in front view; and -
Fig. 3 the fuse according toFigs. 1 and 2 in longitudinal cross-section in its diametrical plane. - Electro thermal fuse generally, and also in the embodiment according to
Figs. 1 - 3 , comprises atubular casing 1, which is made of an electric insulating material, and is on each of its terminal portions 11, 12 closed by a cover, which is in fact also functioning as acontact member electric conductor 2 is inserted throughout thepassage 10 within saidhollow casing 1. - Said
conductor 2 is during the normal operation of the fuse, namely when the electric current is allowed to flow through saidelectric conductor 2, via at least one solderedcontact 3, 3' electrically interconnected with saidcontact members contact 3, 3' displaceable away from at least one of saidcontact members spring 4, by which then the electric current through the fuse is then interrupted. - In accordance with the present invention said
tubular casing 1 consists of ceramics, and is therefore not only electric insulating but also highly temperature resistant and inflammable. - Each of said
contact members passage electric conductor 2 is inserted through saidpassages contact members solder 3, 3', which is located on the external side of the fuse, firmly and electric conductively connected with each of saidcontact members conductor 2 is in the one terminal area of the fuse extended and ended with appropriatelythicker portion 20, so that aspring 4 can be placed around saidconductor 2 and is then jammed between saidthicker portion 20 and thebelonging contact member 120 with said solder 3'. - Each residual volume within said
passage 10 in thecasing 1 of the fuse, namely the area between saidconductor 2 and thecasing 1 as well as between saidcontact members arc preventing filler 5 of the basis of silica, wherein the granulation of the last is preferably 0,2 to 0,4 mm. Quantity ofsaid filler 5 on the basis of silica is determined in such manner, that the volume of thefiller 5 as such corresponds to approximately 90% of the whole disposable volume around theconductor 2 within saidpassage 10 within thecasing 1. - In the shown embodiment of the invention said
spring 4 is a compression helical spring, and a washer 6, which is suitable for supporting saidspring 4, is inserted between saidspring 4 and saidthicker portion 20 on theconductor 2. As a result of such concept, as soon as thespring 4 is placed around theconductor 2 and compressed, and subsequently also the washer 6 is set in position, saidthicker portion 20 can be easily realized by locally flattening saidconductor 2, by which saidspring 4 is maintained in compressed state until thesolder 3, 3' is molten. - In a preferred embodiment of the fuse according to the invention said
conductor 2 is a wire consisting of copper and having a pre-determined circular cross-section of e.g. 1,5 mm2. Forsuch conductor 2 it is then quite satisfactory, if the diameter ofpassages contact members Suitable solder 3, 3' for connecting saidconductor 2 with eachbelonging contact member - As soon as such fuse is integrated within an electric circuit, the electric current starts flowing through the
first contact member 110, thesolder 3, theelectric conductor 2, the solder 3' and thesecond contact member 120. The electric conductor is surrounded with afiller 5. As soon as excessive current occurs within said electric circuit and the temperature increases above a pre-determined value, which corresponds to the melting point of eachsolder 3, 3' like e.g. 105°C or e.g. 109°C, if chemical ingredients in the solder are correspondingly adjusted, thesolder 3, 3' starts melting, upon which the previously compressedspring 4 may be released, which then results in displacement of the conductor away from at least onecontact member conductor 2 apart from thecontact member conductor 2 and thecontact member casing 1, namely between the last and theconductor 2, is properly i.e. in certain extent filled by a filler on the basis of silica. Adjusting each suitable granulation of sand in saidfiller 5 is important for two reasons. Namely, on the one hand is herewith prevented that by introduction of toomuch filler 5, the silica sand, which is in general quite similarly like ceramics resistant against high temperature and inflammable, by axially displacing theconductor 2 in each possible position of the fuse, e.g. in vertical or horizontal or slanted position of the fuse, due to its abrasive properties, hinder said displacing in such extend that despite to sufficientlystrong spring 4 said displacement would be decelerated, which could have negative impact to reacting ability of the fuse to each overload, since the time required for interruption of circuit, into which the fuse is integrated, could be herewith essentially prolonged. On the other hand, appropriate quantity and granulation of said in thefiller 5 is also important for another reason, since during displacing theconductor 2 the sand is immediately and successively filling the space, which is formed behind theconductor 2 by displacing thereof and in which otherwise said arc could appear, so that said released space is promptly filled with a non-flammable and temperatureresistant filler 5. - Thanks to such concept such fuse according to the invention is extremely efficient even in high-voltage electric circuits and regardless to each current position of the mounted fuse.
Claims (6)
- Electro thermal fuse, comprising a tubular casing (1) consisting of electric insulating material, which is on each of its terminal portions (11, 12) closed by a cover, which is also functioning as a contact member (110, 120) consisting of an electric conductive material, which is suitable for integration of the fuse into each disposable electric circuit, while an electric conductor (2) is inserted throughout the passage (10) within said hollow casing (1) and is during the normal operation of the fuse, namely when the electric current is allowed to flow through said electric conductor (2), via at least one soldered contact (3, 3') electrically interconnected with said contact members (110, 120), but is in the case of the electric overload within said circuit and generated heat and consequently melting and interruption of said at least one soldered contact (3, 3') displaceable away from at least one of said contact members (110, 120) by means of a spring (4), by which the electric current through the fuse is then interrupted, characterized in that said tubular casing (1) consists of ceramics, and each of said contact members (110, 120) is furnished with a centrally arranged through passage (111, 121), so that the electric conductor (2) is inserted through said passages (111, 121) within said contact members (110, 120) and is by means of solder (3, 3'), which is located on the external side of the fuse, firmly and electric conductively connected with each of said contact members (110, 120), wherein said conductor (2) is in the one terminal area of the fuse extended and ended with appropriate thicker portion (20), so that a spring (4) is placed around said conductor (2) and is inserted between said thicker portion (20) and the belonging contact member (120) with said solder (3'), and wherein the residual volume within said passage (10) in the casing (1) of the fuse, namely the area between said conductor (2) and the casing (1) as well as between said contact members (110, 120), is filled with a pre-determined quantity of arc preventing filler (5) of the basis of properly granulated silica.
- Fuse according to Claim 1, characterized in that said conductor (2) is a wire consisting of copper and having a pre-determined circular cross-section.
- Fuse according to Claim 1 or 2, characterized in that a washer (6), which is suitable for supporting said spring (4), is inserted between said spring (4) and said thicker portion (20) on the conductor (2).
- Fuse according to anyone of Claims 1 - 3, characterized in that said spring (4) is a compression helical spring.
- Fuse according to anyone of Claims 1 - 4, characterized in that said quantity of filler (5) on the basis of properly granulated silica is determined in such manner, that the volume of the filler (5) as such corresponds to 90% of the whole disposable volume around the conductor (2) within said passage (10) within the casing (1).
- Fuse according to anyone of Claims 1 - 5, characterized in that the melting point of said solder (3, 3'), which is foreseen for connection of the conductor (2) with each corresponding contact member (110, 120), is adjusted within the range 105 - 115°C.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI201800261A SI25756B (en) | 2018-11-29 | 2018-11-29 | Electro thermal fuse |
PCT/SI2018/000026 WO2020112031A1 (en) | 2018-11-29 | 2018-12-05 | Electro thermal fuse |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3888114A1 EP3888114A1 (en) | 2021-10-06 |
EP3888114B1 true EP3888114B1 (en) | 2022-12-14 |
Family
ID=65041832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18836667.8A Active EP3888114B1 (en) | 2018-11-29 | 2018-12-05 | Electro thermal fuse |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3888114B1 (en) |
SI (1) | SI25756B (en) |
WO (1) | WO2020112031A1 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2296627A (en) * | 1937-10-30 | 1942-09-22 | Gen Electric | Time lag fuse |
GB1033814A (en) * | 1963-06-27 | 1966-06-22 | English Electric Co Ltd | Improvements in or relating to electrical fuse-links |
JP2016162683A (en) * | 2015-03-04 | 2016-09-05 | 株式会社オリエント | High voltage electric circuit protection fuse |
-
2018
- 2018-11-29 SI SI201800261A patent/SI25756B/en active Search and Examination
- 2018-12-05 EP EP18836667.8A patent/EP3888114B1/en active Active
- 2018-12-05 WO PCT/SI2018/000026 patent/WO2020112031A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
SI25756A (en) | 2020-06-30 |
SI25756B (en) | 2023-06-30 |
EP3888114A1 (en) | 2021-10-06 |
WO2020112031A1 (en) | 2020-06-04 |
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