GB1111185A - Improvements in electric fuses - Google Patents
Improvements in electric fusesInfo
- Publication number
- GB1111185A GB1111185A GB44961/66A GB4496166A GB1111185A GB 1111185 A GB1111185 A GB 1111185A GB 44961/66 A GB44961/66 A GB 44961/66A GB 4496166 A GB4496166 A GB 4496166A GB 1111185 A GB1111185 A GB 1111185A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ribbon
- tabs
- prevent
- notches
- embedded
- 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
- 239000006004 Quartz sand Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
- 239000000945 filler Substances 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
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
- H01H85/10—Fusible members characterised by the shape or form of the fusible member with constriction for localised fusing
Landscapes
- Fuses (AREA)
Abstract
1,111,185. Fusible cut-outs. GENERAL ELECTRIC CO. 7 Oct., 1966 [17 Jan., 1966], No. 44961/66. Heading H2G. An electric fuse comprises a fusible ribbon 15 embedded in arc-extinguishing material 21 and having a plurality of regions of reduced cross-section provided by pairs of notches 30 and apertures 32 formed by pressing out tabs 40 which transfer heat from the necked regions 35 to the filler 21 to prevent the ribbon melting during a temporary overcurrent. The ribbon, preferably of silver, is embedded in quartz sand, passes through washers 17 and is crimped back over the ends of the tube 10 together with the end caps 12, 13. The notches 30 are preferably semi-circular to prevent stress concentration and the tabs 40 are inclined at 45 degrees at least, preferably at right-angles, to the ribbon to prevent arcing between the tabs and ribbon. The ribbon may be corrugated to increase the heat dissipation and to provide stress-relief during thermal expansion. Several ribbons may be connected in parallel. The fuse is said to operate within one half-cycle of the occurrence of a short circuit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US521093A US3287526A (en) | 1966-01-17 | 1966-01-17 | Electric fuse element having cooling tabs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1111185A true GB1111185A (en) | 1968-04-24 |
Family
ID=24075323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB44961/66A Expired GB1111185A (en) | 1966-01-17 | 1966-10-07 | Improvements in electric fuses |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3287526A (en) |
| JP (1) | JPS441606B1 (en) |
| CH (1) | CH456750A (en) |
| DE (1) | DE1588218A1 (en) |
| GB (1) | GB1111185A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3569889A (en) * | 1968-10-17 | 1971-03-09 | Mitsubishi Electric Corp | Current-limiting fusable device with fusable elements of stepped or graduated cross-sectional areas and having dents |
| US5091712A (en) * | 1991-03-21 | 1992-02-25 | Gould Inc. | Thin film fusible element |
| US5254967A (en) * | 1992-10-02 | 1993-10-19 | Nor-Am Electrical Limited | Dual element fuse |
| US5355110A (en) * | 1992-10-02 | 1994-10-11 | Nor-Am Electrical Limited | Dual element fuse |
| JP2872002B2 (en) * | 1993-06-22 | 1999-03-17 | 矢崎総業株式会社 | fuse |
| US7144739B2 (en) * | 2002-11-26 | 2006-12-05 | Cem Corporation | Pressure measurement and relief for microwave-assisted chemical reactions |
| EP2590201A1 (en) | 2011-11-03 | 2013-05-08 | Georghe Asachi Technical University of Lasi | Fuses with improved cooling |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1774252A (en) * | 1924-11-10 | 1930-08-26 | Henry T Bussmann | Electric fuse and method of making same |
| US2004191A (en) * | 1932-08-20 | 1935-06-11 | Henry T Bussmann | Electric fuse |
| US1974119A (en) * | 1933-05-25 | 1934-09-18 | Naher Arthur | Renewable fuse |
| GB541116A (en) * | 1940-05-11 | 1941-11-13 | Henry Hugh Garrett | Improvements in fuses for the protection of electric circuits |
| US2489501A (en) * | 1945-05-30 | 1949-11-29 | Economy Fuse And Mfg Company | Fuse link |
| US2471176A (en) * | 1947-10-28 | 1949-05-24 | Gen Electric | Time lag fuse link |
| US2988620A (en) * | 1958-09-30 | 1961-06-13 | Chase Shawmut Co | Time-lag fuses |
| US3189712A (en) * | 1963-02-18 | 1965-06-15 | Chase Shawmut Co | High interrupting capacity fuse |
-
1966
- 1966-01-17 US US521093A patent/US3287526A/en not_active Expired - Lifetime
- 1966-10-07 GB GB44961/66A patent/GB1111185A/en not_active Expired
-
1967
- 1967-01-12 CH CH40667A patent/CH456750A/en unknown
- 1967-01-17 JP JP331367A patent/JPS441606B1/ja active Pending
- 1967-01-17 DE DE19671588218 patent/DE1588218A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CH456750A (en) | 1968-07-31 |
| JPS441606B1 (en) | 1969-01-24 |
| US3287526A (en) | 1966-11-22 |
| DE1588218A1 (en) | 1970-06-18 |
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