GB849258A - Improvements in seals for electric cartridge fuses - Google Patents

Improvements in seals for electric cartridge fuses

Info

Publication number
GB849258A
GB849258A GB33558A GB33558A GB849258A GB 849258 A GB849258 A GB 849258A GB 33558 A GB33558 A GB 33558A GB 33558 A GB33558 A GB 33558A GB 849258 A GB849258 A GB 849258A
Authority
GB
United Kingdom
Prior art keywords
cap
sleeve
flange
interference fit
ring
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
GB33558A
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
Priority to GB33558A priority Critical patent/GB849258A/en
Publication of GB849258A publication Critical patent/GB849258A/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
    • H01H85/02—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
    • 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
    • H01H85/042—General constructions or structure of high voltage fuses, i.e. above 1000 V

Landscapes

  • Fuses (AREA)

Abstract

849,258. Fusible cut-outs. COX, J. E. Dec. 22, 1958 [Jan. 3, 1958], No. 335/58. Class 38(1) In a cartridge fuse comprising a cylindrical porcelain body 2 having end portions of reduced diameter 8, 9, a copper sleeve 11 lying between an end-cap 3 and portion 8 defines, with these parts, an annular passage 16 containing neoprene ring 17 to provide a gas, water and oil-tight seal. Sleeve 11 is integral with flange 12 to form cap 13 and makes an interference fit with portion 8. Ring 17, when unstressed, has an axial length equal to that of passage 16, an internal diameter equal to that of portion 8 and external diameter somewhat greater than portion 9. When cap 13 fits on portion 8 ring 17 stands proud of groove 16 and is compressed by cap 3 to fill spaces 22, 23 created by bevelled edge 24 of cap 13. Cap 3 makes a direct interference fit with portion 9 and indirectly through sleeve 11 with portion 8. The core supporting the fuse elements is held within arc-quenching quartz powder by supports welded to a U-shaped conducting member welded to flange 12, at 39. In a second embodiment flange 12 is omitted, the U-shaped member being welded to sleeve 11 (Fig. 3 not shown). A third embodiment is identical with the first except that portion 8 is of greater, and portion 9 of less, axial length so that there is no interference fit between cap 3 and portion 9 (Fig. 4 not shown) Specification 692,627 is referred to.
GB33558A 1958-01-03 1958-01-03 Improvements in seals for electric cartridge fuses Expired GB849258A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB33558A GB849258A (en) 1958-01-03 1958-01-03 Improvements in seals for electric cartridge fuses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33558A GB849258A (en) 1958-01-03 1958-01-03 Improvements in seals for electric cartridge fuses

Publications (1)

Publication Number Publication Date
GB849258A true GB849258A (en) 1960-09-21

Family

ID=9702587

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33558A Expired GB849258A (en) 1958-01-03 1958-01-03 Improvements in seals for electric cartridge fuses

Country Status (1)

Country Link
GB (1) GB849258A (en)

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