US3317689A - Cartridge fuses with non-porous arc-quenching material - Google Patents
Cartridge fuses with non-porous arc-quenching material Download PDFInfo
- Publication number
- US3317689A US3317689A US355603A US35560364A US3317689A US 3317689 A US3317689 A US 3317689A US 355603 A US355603 A US 355603A US 35560364 A US35560364 A US 35560364A US 3317689 A US3317689 A US 3317689A
- Authority
- US
- United States
- Prior art keywords
- mass
- fusible elements
- end caps
- barrel
- cartridge
- 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 - Lifetime
Links
- 238000010791 quenching Methods 0.000 title description 9
- 239000000463 material Substances 0.000 title description 5
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 239000007787 solid Substances 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 description 6
- 239000011707 mineral Substances 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 230000000171 quenching effect Effects 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 2
- 229960000909 sulfur hexafluoride Drugs 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 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
- H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
- H01H69/02—Manufacture of fuses
-
- 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
- H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
- H01H85/044—General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified
- H01H85/045—General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified cartridge type
- H01H85/0456—General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified cartridge type with 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
- H01H85/18—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
- H01H85/38—Means for extinguishing or suppressing arc
-
- 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
- H01H85/38—Means for extinguishing or suppressing arc
- H01H85/42—Means for extinguishing or suppressing arc using an arc-extinguishing gas
-
- 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
- H01H85/0013—Means for preventing damage, e.g. by ambient influences to the fuse
- H01H85/0017—Means for preventing damage, e.g. by ambient influences to the fuse due to vibration or other mechanical forces, e.g. centrifugal forces
Definitions
- the present invention relates to cartridge fuses of the kind comprising fusible Wires or strips embedded within a mass of arc quenching material between two end caps which carry appropriate contact devices, such as blades or tags.
- the fusible elements are embedded in a moulded mass of compact solid mineral silicate. Such a mass is substantially unaffected by the temperatures which the fusible elements may reach in normal operation and even if some kind of reaction takes place it only leads to the formation of a highly insulating glass.
- the cartridge fuse according to the invention may be manufactured by first disposing the fusible elements and the end caps in the outer tubular body or barrel, by injecting thereinto a plastic mass of aqueous sodium silicate and in thereafter heating the cartridge at about 150 C. for eliminating the excess of water. The mass then sets in the form of a compact hard solid body.
- Pure pulverulent silica may conveniently be added as a filler to the aqueous silicate before proceeding to the injection step.
- the pulverulent silica may be introduced into the outer barrel before the injection step.
- FIG. 1 is a longitudinal section of a cartridge fuse according to this invention, comprising an outer barrel.
- FIG. 2 is a longitudinal section of a modified embodiment having an inner cavity filled with an arc quenching fluid.
- the contacting blades 1 are formed integral with cylindrical end caps 2 which are fixed by radical screws such as 3 at both ends of an outer tubular body or barrel 4 made of an appropriate insulating material.
- the end caps 2 comprise inner central bosses 5 on which are soldered the ends of fusible elements 6, such as silver strips.
- the outer barrel 4 has a lateral hole 4a through which a plastic mass of mineral silicate has been injected into the said outer barrel.
- This mixture has set in the form of a compact solid body 7 in which the fusible elements are wholly embedded and are thus fully protected against shocks, vibrations or accelerations. Further the silicate mass 7 is unaffected by the temperatures to which the fusible elements may be brought in normal operation, and in any case it could only be transformed into a highly insulating anhydrous glass-like substance without producing any carbon deposit between the end caps 2.
- the injection hole 401 is of course sealed by the silicate mixture itself. It is besides obvious that this hole could also be provided in one of the end caps 2.
- the crosssection of the outer barrel may be circular, square, rectangular, polygonal, or of any other shape, as desired.
- the cartridge fuse of FIG. 2 is substantially similar to the embodiment of FIG. 1, but it comprises an inner cavity 8 with a canal which opens laterally through the outer barrel 4, the fusible elements 6 being exposed in the said cavity.
- This cavity 8 has been filled with an arc quenching fluid, such as sulphur hexafluoride SP and it has been sealed by means of a plug 9.
- an arc quenching fluid such as sulphur hexafluoride SP
- the cavity 8 may be realized by means of a small wax core moulded on the fusible elements 6 and disposed in the outer barrel together with these elements. When the silicate mass has been injected and has set, this core is easily eliminated by fusion.
- the sulphur hexafluoride could be contained in a small glass bulb disposed in the central zone of the cartridge and which would break or burst under the action of heat when the fusible elements melt.
- a cartridge fuse comprising an open-ended insulating outer tubular barrel having a lateral hole; two electrically conducting end caps, each secured to one end of said barrel so as to define an intermediate inner space therein; electrically conducting fusible elements connecting said end caps with each other within said inner space; and a compact, solid and non-porous mass of a watersoluble mineral silicate embedding said fusible elements and substantially filling said inner space and lateral hole to prevent relative shocks and vibrations of the cartridge fuse assembly.
- a cartridge fuse comprising an open-ended insulating outer tubular barrel; two electrically conducting end caps, each secured to one end of said barrel so as to define an intermediate inner space therein; electrically conducting fusible elements connecting said end caps with each Patented May 2, 1967- other within said inner space; and a compact, solid and non-porous mass of a Water-soluble mineral silicate embedding said fusible elements and substantially filling said inner space, said mass having formed therein a substantially central cavity in which said fusible elements are exposed, and said cavity being filled with an arc-quenching fluid.
- the tubular barrel and the non-porous mass having registering holes therein through which the arc-quenching fluid is introduced, and a plug insert sealing said registering holes to retain said fluid in said inner space.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fuses (AREA)
Description
y 2, 1967' L. J. SAUDICOEUR 3,317,689
CARTRIDGE. FUSES WITH NON-POROUS ARG-QUENCHING MATERIAL Filed March 30, 1964 INVENTOR BY w w ATTORNEXB United States Patent France, France,
The present invention relates to cartridge fuses of the kind comprising fusible Wires or strips embedded within a mass of arc quenching material between two end caps which carry appropriate contact devices, such as blades or tags.
In the conventional construction the arc quenching material is under pulverulent form and it is enclosed, together with the fusible element, within a tubular bodyor barrel the ends of which are closed by the end caps. The filing of these cartridge fuses is tedious and delicate. Further the fusible elements are not rigidly maintained by the pulverulent material against the action of shocks, vibrations and accelerations (such as centrifugal force) which may cause their rupture, more particularly when they are brought to a relatively high temperature by passage of their rated electric current.
It has already been proposed to embed the fusible elements in a moulded mass of synthetic resin together with the end caps. But this arrangement has the disadvantage that when the fusible elements are submitted for a long time to a current of relatively high intensity, they are brought to a suflicient temperature for slowly decomposing the synthetic resin, thus producing carbon deposits which are more or less electrically conducting and tend to facilitate the production of the arc in the case of a heavy short-circuit.
In accordance with the present invention the fusible elements are embedded in a moulded mass of compact solid mineral silicate. Such a mass is substantially unaffected by the temperatures which the fusible elements may reach in normal operation and even if some kind of reaction takes place it only leads to the formation of a highly insulating glass.
If desired, the mineral silicate may contain pulverulent silica as a filter. The moulded mass of mineral silicate is preferably enclosed in an outer tubular body or barrel. It is besides possible to provide within the moulded mass a cavity filled with any known are quenching fluid such as sulphur hexafiuoride.
The cartridge fuse according to the invention may be manufactured by first disposing the fusible elements and the end caps in the outer tubular body or barrel, by injecting thereinto a plastic mass of aqueous sodium silicate and in thereafter heating the cartridge at about 150 C. for eliminating the excess of water. The mass then sets in the form of a compact hard solid body.
Pure pulverulent silica may conveniently be added as a filler to the aqueous silicate before proceeding to the injection step. In a modification the pulverulent silica may be introduced into the outer barrel before the injection step.
It is also possible to realize the injection step in a separate mould and thereafter to dispose the solid mass in the outer tubular body or barrel, together with the fusible elements and the end caps.
In the annexed drawings:
FIG. 1 is a longitudinal section of a cartridge fuse according to this invention, comprising an outer barrel.
FIG. 2 is a longitudinal section of a modified embodiment having an inner cavity filled with an arc quenching fluid.
Referring to FIG. 1, the contacting blades 1 are formed integral with cylindrical end caps 2 which are fixed by radical screws such as 3 at both ends of an outer tubular body or barrel 4 made of an appropriate insulating material. The end caps 2 comprise inner central bosses 5 on which are soldered the ends of fusible elements 6, such as silver strips. The outer barrel 4 has a lateral hole 4a through which a plastic mass of mineral silicate has been injected into the said outer barrel. This mixture has set in the form of a compact solid body 7 in which the fusible elements are wholly embedded and are thus fully protected against shocks, vibrations or accelerations. Further the silicate mass 7 is unaffected by the temperatures to which the fusible elements may be brought in normal operation, and in any case it could only be transformed into a highly insulating anhydrous glass-like substance without producing any carbon deposit between the end caps 2.
The injection hole 401 is of course sealed by the silicate mixture itself. It is besides obvious that this hole could also be provided in one of the end caps 2. The crosssection of the outer barrel may be circular, square, rectangular, polygonal, or of any other shape, as desired.
The plastic silicate mass is preferably formed of aqueous sodium silicate comprising for instance 60 to water, the cartridge being heated to about C. after the injection step for eliminating the excess of water. Pure pulverulent silica may be added to the plastic mass as a filter.
Alternatively the plastic mass could be injected into a separate mould, the solid body thus obtained being there after disposed in the outer barrel together with the fusible elements and the end caps.
The cartridge fuse of FIG. 2 is substantially similar to the embodiment of FIG. 1, but it comprises an inner cavity 8 with a canal which opens laterally through the outer barrel 4, the fusible elements 6 being exposed in the said cavity. This cavity 8 has been filled with an arc quenching fluid, such as sulphur hexafluoride SP and it has been sealed by means of a plug 9. When the fusible elements melt, the arc is immediately quenched by SF in the per se known manner.
The cavity 8 may be realized by means of a small wax core moulded on the fusible elements 6 and disposed in the outer barrel together with these elements. When the silicate mass has been injected and has set, this core is easily eliminated by fusion.
In a modification the sulphur hexafluoride could be contained in a small glass bulb disposed in the central zone of the cartridge and which would break or burst under the action of heat when the fusible elements melt.
While in FIGS. 1 and 2 the end caps 2 have been shown as engaged into the ends of the outer barrel 4, they could also be secured against the end faces of the latter, in the per se known manner.
I claim:
1. A cartridge fuse comprising an open-ended insulating outer tubular barrel having a lateral hole; two electrically conducting end caps, each secured to one end of said barrel so as to define an intermediate inner space therein; electrically conducting fusible elements connecting said end caps with each other within said inner space; and a compact, solid and non-porous mass of a watersoluble mineral silicate embedding said fusible elements and substantially filling said inner space and lateral hole to prevent relative shocks and vibrations of the cartridge fuse assembly.
2. A cartridge fuse comprising an open-ended insulating outer tubular barrel; two electrically conducting end caps, each secured to one end of said barrel so as to define an intermediate inner space therein; electrically conducting fusible elements connecting said end caps with each Patented May 2, 1967- other within said inner space; and a compact, solid and non-porous mass of a Water-soluble mineral silicate embedding said fusible elements and substantially filling said inner space, said mass having formed therein a substantially central cavity in which said fusible elements are exposed, and said cavity being filled with an arc-quenching fluid.
3. In a cartridge fuse as set forth in claim 2, the tubular barrel and the non-porous mass having registering holes therein through which the arc-quenching fluid is introduced, and a plug insert sealing said registering holes to retain said fluid in said inner space.
References Cited by the Examiner UNITED STATES PATENTS 1,266,479 5/1918 Jensen 200-135 1,270,335 6/1918 Schweitzer 200-135 1,480,225 1/ 1924 Snook ZOO-120 4 Murray 200-120 Schweitzer 200120 Hill 200-120 Lohausen 200-120 Strom 200-117 Yonkers 29-1555 Miller 200-120 Fister 200-120 Skeats 200-120 Arzapalo 200-120 Hollman et al. 200-120 Hollrnan et al. 200-120 Great Britain.
BERNARD A. GILHEANY, Primary Examiner.
H. B. GILSON, Assistant Examiner.
Claims (1)
1. A CARTRIDGE FUSE COMPRISING AN OPEN-ENDED INSULATING OUTER TUBULAR BARREL HAVING A LATERAL HOLE; TWO ELECTRICALLY CONDUCTING END CAPS, EACH SECURED TO ONE END OF
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR43523A FR83398E (en) | 1963-04-05 | 1963-04-05 | Improvements to electrical fuses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3317689A true US3317689A (en) | 1967-05-02 |
Family
ID=9694364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US355603A Expired - Lifetime US3317689A (en) | 1963-04-05 | 1964-03-30 | Cartridge fuses with non-porous arc-quenching material |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3317689A (en) |
| CH (1) | CH413062A (en) |
| DE (1) | DE1294529B (en) |
| FR (1) | FR83398E (en) |
| GB (1) | GB1010128A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050134422A1 (en) * | 2003-12-19 | 2005-06-23 | Okuniewicz Richard J. | MEDIUM VOLTAGE FUSES: sheathed element reduces I2t energy during short-circuit operation |
| US20150340188A1 (en) * | 2014-05-22 | 2015-11-26 | Littelfuse, Inc. | Porous inlay for fuse housing |
| US20160141140A1 (en) * | 2014-05-22 | 2016-05-19 | Littelfuse, Inc. | Insert for fuse housing |
| RU191172U1 (en) * | 2019-03-20 | 2019-07-29 | Федеральное государственное автономное образовательное учреждение высшего образования "Крымский федеральный университет имени В.И. Вернадского" | Fuse |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3967228A (en) * | 1975-10-09 | 1976-06-29 | General Electric Company | Electric current limiting fuse having a filter disposed in one end cap |
| DE2928822A1 (en) * | 1979-07-17 | 1981-02-05 | Siemens Ag | High tension fuse - with core of moulding sand and binder carrying fuse wire spiral in quartz sand filled sleeve |
| GB8519601D0 (en) * | 1985-08-05 | 1985-09-11 | Dubilier Plc | Time-lag fuses |
| FR2632449B1 (en) * | 1988-06-07 | 1990-09-14 | Ferraz | PROCESS FOR PRODUCING ELECTRIC FUSES WITH AGGLOMERATED SAND |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190220483A (en) * | 1902-09-19 | 1903-07-23 | Oliver Leopold Peard | Improvements in Electric Safety Fuses. |
| US1266479A (en) * | 1916-09-18 | 1918-05-14 | Victor G Jensen | Fuse. |
| US1270335A (en) * | 1914-12-17 | 1918-06-25 | Edmund O Schweitzer | Fuse device. |
| US1480225A (en) * | 1921-09-08 | 1924-01-08 | Western Electric Co | Electrical cut-out |
| US1614014A (en) * | 1925-01-08 | 1927-01-11 | Thomas E Murray | Electric fuse |
| US1873339A (en) * | 1927-04-02 | 1932-08-23 | Edmund O Schweitzer | Fuse |
| US1965239A (en) * | 1930-10-22 | 1934-07-03 | Hill George Leslie | High potential fuse |
| US2223959A (en) * | 1937-05-04 | 1940-12-03 | Gen Electric | Current limiting fuse |
| US2337504A (en) * | 1940-09-19 | 1943-12-21 | Westinghouse Electric & Mfg Co | Current limiting fuse |
| US2493434A (en) * | 1946-03-21 | 1950-01-03 | Joslyn Mfg And Supply Company | Method of manufacturing fuse links |
| US2539261A (en) * | 1949-11-26 | 1951-01-23 | Pennsylvania Salt Mfg Co | Fuse |
| US2837614A (en) * | 1953-10-19 | 1958-06-03 | Mc Graw Edison Co | Protectors for electric circuits |
| US2866040A (en) * | 1957-09-13 | 1958-12-23 | Gen Electric | Low-voltage current-limiting fuse |
| US3005074A (en) * | 1959-02-26 | 1961-10-17 | Mc Graw Edison Co | Circuit interrupting devices |
| US3166656A (en) * | 1960-04-04 | 1965-01-19 | Driescher Spezialfab Fritz | Cartridge fuse |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB369550A (en) * | 1929-10-08 | 1932-03-24 | Philips Nv | Improvements in or relating to fuses for high voltages |
| DE631359C (en) * | 1934-03-25 | 1936-06-18 | Siemens Schuckertwerke Akt Ges | Electric fuse |
-
1963
- 1963-04-05 FR FR43523A patent/FR83398E/en not_active Expired
-
1964
- 1964-03-30 US US355603A patent/US3317689A/en not_active Expired - Lifetime
- 1964-04-02 CH CH426564A patent/CH413062A/en unknown
- 1964-04-03 GB GB139?9/64D patent/GB1010128A/en not_active Expired
- 1964-04-03 DE DEF42510A patent/DE1294529B/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190220483A (en) * | 1902-09-19 | 1903-07-23 | Oliver Leopold Peard | Improvements in Electric Safety Fuses. |
| US1270335A (en) * | 1914-12-17 | 1918-06-25 | Edmund O Schweitzer | Fuse device. |
| US1266479A (en) * | 1916-09-18 | 1918-05-14 | Victor G Jensen | Fuse. |
| US1480225A (en) * | 1921-09-08 | 1924-01-08 | Western Electric Co | Electrical cut-out |
| US1614014A (en) * | 1925-01-08 | 1927-01-11 | Thomas E Murray | Electric fuse |
| US1873339A (en) * | 1927-04-02 | 1932-08-23 | Edmund O Schweitzer | Fuse |
| US1965239A (en) * | 1930-10-22 | 1934-07-03 | Hill George Leslie | High potential fuse |
| US2223959A (en) * | 1937-05-04 | 1940-12-03 | Gen Electric | Current limiting fuse |
| US2337504A (en) * | 1940-09-19 | 1943-12-21 | Westinghouse Electric & Mfg Co | Current limiting fuse |
| US2493434A (en) * | 1946-03-21 | 1950-01-03 | Joslyn Mfg And Supply Company | Method of manufacturing fuse links |
| US2539261A (en) * | 1949-11-26 | 1951-01-23 | Pennsylvania Salt Mfg Co | Fuse |
| US2837614A (en) * | 1953-10-19 | 1958-06-03 | Mc Graw Edison Co | Protectors for electric circuits |
| US2866040A (en) * | 1957-09-13 | 1958-12-23 | Gen Electric | Low-voltage current-limiting fuse |
| US3005074A (en) * | 1959-02-26 | 1961-10-17 | Mc Graw Edison Co | Circuit interrupting devices |
| US3166656A (en) * | 1960-04-04 | 1965-01-19 | Driescher Spezialfab Fritz | Cartridge fuse |
| US3196521A (en) * | 1960-04-04 | 1965-07-27 | Driescher Spezialfab Fritz | Fuse cartridge |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050134422A1 (en) * | 2003-12-19 | 2005-06-23 | Okuniewicz Richard J. | MEDIUM VOLTAGE FUSES: sheathed element reduces I2t energy during short-circuit operation |
| US20150340188A1 (en) * | 2014-05-22 | 2015-11-26 | Littelfuse, Inc. | Porous inlay for fuse housing |
| US20160141140A1 (en) * | 2014-05-22 | 2016-05-19 | Littelfuse, Inc. | Insert for fuse housing |
| US9607799B2 (en) * | 2014-05-22 | 2017-03-28 | Littelfuse, Inc. | Porous inlay for fuse housing |
| US9892880B2 (en) * | 2014-05-22 | 2018-02-13 | Littelfuse, Inc. | Insert for fuse housing |
| RU191172U1 (en) * | 2019-03-20 | 2019-07-29 | Федеральное государственное автономное образовательное учреждение высшего образования "Крымский федеральный университет имени В.И. Вернадского" | Fuse |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1010128A (en) | 1965-11-17 |
| CH413062A (en) | 1966-05-15 |
| FR83398E (en) | 1964-07-31 |
| DE1294529B (en) | 1969-05-08 |
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