US3518599A - Box for cartridge fuses with fuse ejector - Google Patents

Box for cartridge fuses with fuse ejector Download PDF

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Publication number
US3518599A
US3518599A US795188*A US3518599DA US3518599A US 3518599 A US3518599 A US 3518599A US 3518599D A US3518599D A US 3518599DA US 3518599 A US3518599 A US 3518599A
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US
United States
Prior art keywords
cartridge
fuse
lever
box
terminal
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
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US795188*A
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English (en)
Inventor
Claude Pascal Lanux
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.)
Telemecanique SA
Original Assignee
La Telemecanique Electrique SA
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Publication date
Application filed by La Telemecanique Electrique SA filed Critical La Telemecanique Electrique SA
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Publication of US3518599A publication Critical patent/US3518599A/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • H01H85/54—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers
    • H01H85/545—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers with pivoting fuse carrier

Definitions

  • An improved fuse box for cartridge fuses is provided with an ejector lever which is fitted to the face of the fuse box at a point between the fuse contact clips and is arranged to fit within the fuse cavity in the box while taking up any minimum of additional space.
  • the lever is arranged so that upward movement of the free end of the lever causes corresponding upward pivoting movement of the fuse.
  • the present invention relates to a fuse box provided with means for the extraction of spent cartridges.
  • fuse boxes made from insulating material to be formed with individual spaces, each separated from neighbouring spaces by a partition, for receiving the cartridges.
  • terminals In each of these spaces are arranged terminals with jaws which accommodate the two ends of the cartridge.
  • these insulating boxes are made as small as possible, so that the spaces in which the cartridges are accomanodated are of a size limited almost to that of the fusesupporting jaws.
  • the lever is provided either in prolongation, or laterally, of the cartridge and, in order to effect extraction, this lever pivots in opposition to the pivoting movement of the cartridge. Therefore, these known devices require, for the normal accommodation of the lever as well as for its operating movement, a space far greater than that allotted to the cartridge.
  • the present invention has for its objects a lever mechanism enabling a fuse cartridge to be extracted which, for its setting up as well as its operation, requires almost no additional space, so that the minimum dimensions of fuse boxes can be adhered to.
  • the present invention provides an improved fuse box for a cartridge fuse, of the kind wherein a cartridge fuse is held between a pair of terminal clips and a manually actuatable fuse ejector lever is mounted in the box by a pivot axis located below the lever of the fuse for pivotal movement to cause rotation of said cartridge fuse ejector about one of said terminal clips thereby disengaging said fuse from the second of said terminal clips, wherein said improvement consists in the location of said pivot axis at a point intermediate said terminal clips, and the use of a Patented June 30, 1970 lever formed with a transversed fuse-engaging member at a point between said pivot axis and the free end of said lever, said member normally underlying said fuse adjacent one of said terminal clips.
  • said lever comprises a stirrup-like member of flat, strip-like material with first and second limbs straddling said fuse and pivotally mounted at their free ends, said lever having an intermediate transverse strut bridging said limbs to constitute said fuse-engaging member.
  • the first transverse portion where it faces the cartridge, may bbe provided with a rounded surface and is preferably an element consisting of a curved plate.
  • the invention applies to the usual type of cartridge, with end portions of expanded diameter and symmetrical shape, but also to fuses having one end tapered in which the contact surfaces are constituted by the end faces.
  • the contacting device receiving the tapered end is the one which permits the pivoting movement of the cartridge and this contacting device comprises a conductive pivotable support influenced by the force of a resilient member acting in the direction towards the other contacting element, an insulating sheath, which is hinged on the first support, receiving the tapered end of the cartridge.
  • the pivot about which the sheath rotates and the pivot of the hinged support arep referably situated on opposite sides of the sheath axis, this arrangement facilitating the pivoting of the cartridge.
  • FIG. 1 is a plan view of a fuse box.
  • FIG. 2 is a sectional view along the line IIII of FIG. 1.
  • FIG. 3 is a view similar to that of FIG. 2, with the extraction lever in the upward position.
  • FIG. 4 is a sectional view along the line IV-IV of FIG. 2.
  • FIG. 5 shows, in a sectional view, similar to that of FIG. 2, a modification for fuse cartridges the end faces of which are conductive.
  • FIG. 6 is a view similar to that of FIG. 5, showing the extraction lever in the upward position.
  • FIG. 7 is a view similar to that of FIG. 5, showing a modified embodiment.
  • FIG. 8 is a perspective view of an extraction lever in the shape of a stirrup.
  • the box A shown in FIG. 1 comprises three fuse cartridges 1 of the usual type, i.e., cylindrical and with conductive end portions. These end portions are each held by clip terminals 2 and 3 respectively, an arrangement well known per se.
  • the separate lug 7 is provided with flanges 9 traversed by a hinge 10 which enables the lever 11 to pivot.
  • the lever is pro vided in the form of a stirrup and comprises between its side portions, a curved portion 12 which, in the normal position of the cartridge (FIG. 2), is situated under the end portion of this cartridge which is held by the clip terminal 3.
  • the lever 11 is at the same potential as the clip terminal. Therefore, it does not matter if, in the normal position, the transverse portion 13, which enables actuation of the lever by hand, is closely adjacent the cartridge end.
  • the device describedhere is also applicable to cartridges in which the end faces are conductive and which are held by being clamped between its surfaces.
  • a device of this kind is shown in FIGS. 5, 6 and 7.
  • cartridges of this type comprise at the centre of their end face a pellet 17 which is released when the fuse melts. The hole makes it possible to see if the pellet has been released or, when the box is in the vertical position, has dropped down. A beak 31 holds the cartridge in place.
  • the lever 21 pivots about a metal hinge 25, anchored in the insulating portions of the box A.
  • the lever 21 has a flattened end 26 engaging a cavity 27 of the insulating portion of the box, thus being enabled to pivot by contacting the edge 27a provided at the bottom of this cavity.
  • the lever 21 is electrically connected, by the flex 28, to the lug 29 which constitutes the second connection terminal, the first being, as in the former case, constituted by the screw 8.
  • the box may be formed in such a way as to comprise an insulating portion 30 of more or less complex shape, situated between the two connection terminals which terminate in cartridge-positioning members. Owing to this arrangement, these members are prevented from moving closer together.
  • An improved fuse box for a cartridge fuse of the kind wherein a cartridge fuse is held between a pair of terminal clips arid a manually actuatable fuse ejector lever is mounted in the box by a pivot axis located below the lever of the fuse forpivotal movement to cause rotation of said cartridge tools about one of said terminal clips thereby disengaging said fuse from the second of said terminal clips, wherein said improvement consists in the location of said pivot axis at a point intermediate said terminal clips, and the use of a lever formed with a transversed fuse-engaging member located at a point between said pivot axis and the free end of said lever, said member normally underlying said fuse adjacent one of said terminal clips.
  • a fuse box according to claim 1 wherein said lever comprises a stirrup-like member of fiat, strip-like material with first and second limbs straddling said fuse and pivotally mounted at their free ends, said lever having an intermediate transverse strut bridging said limbs to constitute said fuse-engaging member.
  • transverse portion at the base of said stirrup-like member is substantially fiat and so angled that when said lever is in a position underlying said fuse, said transverse portion extends substantially normally to the axisof said fuse.
  • a fuse box according to claim 1 wherein said terminal clips are constructed to engage with terminal end faces of a cartridge fuse, and wherein one of said clips comprises a conductive support pivotally mounted about a hinge situated below the longitudinal axis of a cartridge in position in said clip, said support being urged towards the other of said clips by a resilient member.

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  • Fuses (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US795188*A 1968-02-05 1969-01-30 Box for cartridge fuses with fuse ejector Expired - Lifetime US3518599A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR138661 1968-02-05

Publications (1)

Publication Number Publication Date
US3518599A true US3518599A (en) 1970-06-30

Family

ID=8645549

Family Applications (1)

Application Number Title Priority Date Filing Date
US795188*A Expired - Lifetime US3518599A (en) 1968-02-05 1969-01-30 Box for cartridge fuses with fuse ejector

Country Status (7)

Country Link
US (1) US3518599A (ja)
BE (1) BE727897A (ja)
DE (1) DE1903726A1 (ja)
ES (1) ES363253A1 (ja)
FR (1) FR1563009A (ja)
LU (1) LU57845A1 (ja)
NL (1) NL6901319A (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896408A (en) * 1974-01-31 1975-07-22 Honeywell Inc Fuse ejector
US4288138A (en) * 1979-10-29 1981-09-08 Square D Company Fuse puller
US4671588A (en) * 1986-06-17 1987-06-09 Eaton Corporation Fuse puller for barrel fuse
US5076118A (en) * 1990-09-18 1991-12-31 Siemens Energy & Automation, Inc. Fuse insertion or removal tool
US6531948B1 (en) * 1998-11-27 2003-03-11 Schneider Electric Limited Fuse handler
US10177515B2 (en) * 2017-05-17 2019-01-08 Eaton Intelligent Power Limited Lug assemblies and related electrical apparatus and methods

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6569500A (en) * 1999-08-05 2001-03-05 Klaus Bruchmann Compact multipolar circuit protection assembly

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2004328A (en) * 1930-12-26 1935-06-11 Palmer Electric & Mfg Co Fuse mechanism
US2004314A (en) * 1931-10-29 1935-06-11 Palmer Electric & Mfg Co Cartridge fuse extractor
US2009235A (en) * 1932-06-01 1935-07-23 Code Electric Products Corp Cartridge fuse holder and ejector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2004328A (en) * 1930-12-26 1935-06-11 Palmer Electric & Mfg Co Fuse mechanism
US2004314A (en) * 1931-10-29 1935-06-11 Palmer Electric & Mfg Co Cartridge fuse extractor
US2009235A (en) * 1932-06-01 1935-07-23 Code Electric Products Corp Cartridge fuse holder and ejector

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896408A (en) * 1974-01-31 1975-07-22 Honeywell Inc Fuse ejector
US4288138A (en) * 1979-10-29 1981-09-08 Square D Company Fuse puller
US4671588A (en) * 1986-06-17 1987-06-09 Eaton Corporation Fuse puller for barrel fuse
US5076118A (en) * 1990-09-18 1991-12-31 Siemens Energy & Automation, Inc. Fuse insertion or removal tool
US6531948B1 (en) * 1998-11-27 2003-03-11 Schneider Electric Limited Fuse handler
US10177515B2 (en) * 2017-05-17 2019-01-08 Eaton Intelligent Power Limited Lug assemblies and related electrical apparatus and methods
US10770851B2 (en) 2017-05-17 2020-09-08 Eaton Intelligent Power Limited Lug assemblies and related electrical apparatus and methods
US11309669B2 (en) 2017-05-17 2022-04-19 Eaton Intelligent Power Limited Lug assemblies and related electrical apparatus and methods

Also Published As

Publication number Publication date
NL6901319A (ja) 1969-08-07
ES363253A1 (es) 1970-12-16
FR1563009A (ja) 1969-04-11
DE1903726A1 (de) 1969-09-11
BE727897A (ja) 1969-07-16
LU57845A1 (ja) 1969-05-14

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