GB692627A - Improvements relating to electric fuses - Google Patents

Improvements relating to electric fuses

Info

Publication number
GB692627A
GB692627A GB20026/50A GB2002650A GB692627A GB 692627 A GB692627 A GB 692627A GB 20026/50 A GB20026/50 A GB 20026/50A GB 2002650 A GB2002650 A GB 2002650A GB 692627 A GB692627 A GB 692627A
Authority
GB
United Kingdom
Prior art keywords
caps
casing
indicator
fuse
end caps
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
Application number
GB20026/50A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB692627A publication Critical patent/GB692627A/en
Expired legal-status Critical Current

Links

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
    • H01H85/0013—Means for preventing damage, e.g. by ambient influences to the fuse
    • H01H85/0021—Means for preventing damage, e.g. by ambient influences to the fuse water or dustproof devices
    • H01H85/003—Means for preventing damage, e.g. by ambient influences to the fuse water or dustproof devices casings for the fusible element
    • 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
    • H01H85/0458—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 ferrule type end contacts

Landscapes

  • Fuses (AREA)

Abstract

692,627. Fusible cut-outs. COX, J. E. July 19, 1951 [Aug. 11, 1950], No. 20026/50. Class 38 (i). In a cartridge fuse, end caps 4, Fig. 1, are secured on the tubular insulating casing 1 by resilient sealing rings 3 located in annular grooves 2 in the casing (or caps) and which are deformed by forcing the caps on to the casing. A helical fuse wire 12 is wound on a porcelain core 6 supported within the casing by spigots 10 formed on inner end caps 8 to which the wire is welded and which fit resiliently over re-entrant portions 9 on the end caps 4. One of the spigots 10 houses an indicator 13 of the spring-pressed plunger or explosive capsule type which is released by a subsidiary fuse wire 17, the indicator plunger 15 penetrating a perforable portion 16 of one end cap 4. The casing is filled with marble powder 20. Fig. 4 shows a modification in which packing washers 22 are compressed between the ends of the casing 1 and the end caps 4, and outer end caps 24 containing further washers 23 are pressed over the caps 4. In this embodiment the core 6 has cemented thereto sleeve terminals 25 for the fuse wire 12, said terminals fitting over inturned spigots 26 on the caps 4. An indicator housing 27 has an enlarged end 28 slit at 29 to grip internally one of the spigots 26. The indicator may have spaced rings on its outer surface, Fig. 5 (not shown), which are adapted to be engaged by spring arms to retain the indicator in its blown position. In a further modification, Fig. 7, sleeve terminals 25 supporting the core 6 are secured to the caps 4 by circlips 41 and the fuse wire comprises sections 33, 34 of different cross-section welded together in series at 35. Fig. 8 shows a fuse having two fuse wires in parallel, each formed of sections 33, 34 of different gauge supported by the filling 20. The ends of the wires are welded to thimble 36 which are a push fit on the reentrant portions 26 of end caps 4. Insulating sleeves 37 placed round the thimbles 36 prevent leakage of the filling 20. In Figs. 7 and 8 the fuses are shown without indicators.
GB20026/50A 1950-08-11 1950-08-11 Improvements relating to electric fuses Expired GB692627A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB295510X 1950-08-11

Publications (1)

Publication Number Publication Date
GB692627A true GB692627A (en) 1953-06-10

Family

ID=10293310

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20026/50A Expired GB692627A (en) 1950-08-11 1950-08-11 Improvements relating to electric fuses

Country Status (5)

Country Link
US (1) US2639350A (en)
CH (1) CH295510A (en)
DE (1) DE936459C (en)
FR (1) FR1047970A (en)
GB (1) GB692627A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3723931A (en) * 1971-07-19 1973-03-27 Mc Graw Edison Co Protectors for electric circuits
WO2020134174A1 (en) * 2018-12-27 2020-07-02 南京萨特科技发展有限公司 High-breaking miniature fuse and method for preparing same

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2761932A (en) * 1955-04-06 1956-09-04 Chase Shawmut Co Fuse structures with striker pins
US2794096A (en) * 1955-09-08 1957-05-28 Chase Shawmut Co High interrupting capacity currentlimiting fuses with striker pins
US3012121A (en) * 1957-09-04 1961-12-05 Ite Circuit Breaker Ltd Electric fuses
CH353070A (en) * 1958-01-03 1961-03-31 Electric Transmission Limited Electric fuse
GB1080694A (en) * 1963-05-20 1967-08-23 English Electric Co Ltd Improvements in or relating to electrical fuses
JPS4928981Y1 (en) * 1969-12-15 1974-08-07
US3614699A (en) * 1970-08-10 1971-10-19 Mc Graw Edison Co Protector for electric circuits
US3962666A (en) * 1975-04-28 1976-06-08 The Chase-Shawmut Company Support plates for a helically wound fusible element
US4208787A (en) * 1976-12-30 1980-06-24 Westinghouse Electric Corp. Process for making a submersible fuse
US4323874A (en) * 1980-07-28 1982-04-06 Rte Corporation Blown fuse indicator
US4322706A (en) * 1980-12-15 1982-03-30 Kearney-National, Inc. Piston actuated striker for electric fuse
FR2614468B1 (en) * 1987-04-27 1989-06-09 Merlin Gerin SAND FILLED HIGH VOLTAGE ELECTRIC FUSE
US4910490A (en) * 1989-06-28 1990-03-20 Gould, Inc. End terminal seal for an electric fuse
US5361058A (en) * 1993-11-02 1994-11-01 Gould Electronics Inc. Time delay fuse
US5367281A (en) * 1993-12-30 1994-11-22 Eaton Corporation Striker pin device for an electric fuse
US5892427A (en) * 1998-04-24 1999-04-06 Cooper Technologies Company Current limiting high voltage fuse
JP4361095B2 (en) * 2004-02-21 2009-11-11 ビックマン−ベルケ ゲーエムベーハー Coiled fusible conductor with insulated intermediate coil for fuse elements
US20060119465A1 (en) * 2004-12-03 2006-06-08 Dietsch G T Fuse with expanding solder
US7477129B2 (en) * 2004-12-06 2009-01-13 Cooper Technologies Company Current limiting fuse
DE502005001781D1 (en) * 2005-06-02 2007-12-06 Wickmann Werke Gmbh Coiled melting conductor for a fuse element with plastic seal
DE102005033212B4 (en) * 2005-06-07 2007-04-19 Siba Fuses Gmbh & Co. Kg High voltage fuse
US9117615B2 (en) 2010-05-17 2015-08-25 Littlefuse, Inc. Double wound fusible element and associated fuse

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE267829C (en) *
DE220948C (en) *
US2063967A (en) * 1935-03-22 1936-12-15 Benjamin B Whittam Compression joint
US2216661A (en) * 1936-09-29 1940-10-01 Dannenberg Kurt High tension fuse
US2249945A (en) * 1938-02-24 1941-07-22 Dannenberg Kurt High tension fuse
US2439674A (en) * 1944-10-17 1948-04-13 Gen Electric Current limiting fuse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3723931A (en) * 1971-07-19 1973-03-27 Mc Graw Edison Co Protectors for electric circuits
WO2020134174A1 (en) * 2018-12-27 2020-07-02 南京萨特科技发展有限公司 High-breaking miniature fuse and method for preparing same

Also Published As

Publication number Publication date
CH295510A (en) 1953-12-31
US2639350A (en) 1953-05-19
DE936459C (en) 1955-12-15
FR1047970A (en) 1953-12-18

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