US3110787A - Miniature electrical fuse - Google Patents

Miniature electrical fuse Download PDF

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Publication number
US3110787A
US3110787A US75710A US7571060A US3110787A US 3110787 A US3110787 A US 3110787A US 75710 A US75710 A US 75710A US 7571060 A US7571060 A US 7571060A US 3110787 A US3110787 A US 3110787A
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US
United States
Prior art keywords
fuse
lead wires
filament
fuse body
cap member
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
Application number
US75710A
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English (en)
Inventor
Borzoni John Martin
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.)
Littelfuse Inc
Original Assignee
Littelfuse Inc
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 Littelfuse Inc filed Critical Littelfuse Inc
Priority to US75710A priority Critical patent/US3110787A/en
Priority to GB44273/61A priority patent/GB969654A/en
Priority to DE1413956*CA priority patent/DE1413956C3/de
Application granted granted Critical
Publication of US3110787A publication Critical patent/US3110787A/en
Anticipated expiration legal-status Critical
Assigned to TORONTO-DOMINION BANK, THE, AS AGENT reassignment TORONTO-DOMINION BANK, THE, AS AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TRACOR, INC.
Assigned to BANK OF AMERICA NATIONAL TRUST AND SAVINGS ASSOCIATION reassignment BANK OF AMERICA NATIONAL TRUST AND SAVINGS ASSOCIATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TRACOR, INC.
Assigned to BANK OF AMERICA AS AGENT reassignment BANK OF AMERICA AS AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TORONTO-DOMINION BANK, THE
Assigned to BANK OF AMERICA NATIONAL TRUST AND SAVINGS ASSOCIATION reassignment BANK OF AMERICA NATIONAL TRUST AND SAVINGS ASSOCIATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TORONTO-DOMINION BANK, TRACOR, INC.
Assigned to TORONTO-DOMINION BANK, THE reassignment TORONTO-DOMINION BANK, THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LITTLEFUSE, INC., TRACOR AEROSPACE, INC., TRACOR APPLIED SCIENCES, INC., TRACOR ATLAS, INC., TRACOR AVIATION, INC., TRACOR CUSTOM PRODUCTS, TRACOR FLIGHT SERVICES, INC., TRACOR FLIGHT SYSTEMS, INC., TRACOR HYDRONAUTICS, INC., TRACOR HYDRO-SERVICES, INC., TRACOR INSTRUMENTS AUSTIN, INC., TRACOR JITCO, INC., TRACOR MARINE, INC., TRACOR NORTHERN, INC., TRACOR XRAY, INC., TRACOR, INC., WESTRONICS, INCORPORATED OF TEXAS
Assigned to BANK OF AMERICA NATIONAL TRUST AND SAVINGS ASSOCIATION reassignment BANK OF AMERICA NATIONAL TRUST AND SAVINGS ASSOCIATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TRACOR INC.
Assigned to TRACOR, INC. reassignment TRACOR, INC. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: BANK OF AMERICA NATIONAL TRUST AND SAVINGS ASSOCIATION AS COLLATERAL AGENT
Assigned to TRACOR, INC. reassignment TRACOR, INC. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: BANK OF AMERICA NATIONAL TRUST AND SAVINGS ASSOCIATION AS COLLATERAL AGENT
Expired - Lifetime legal-status Critical Current

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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
    • H01H85/0411—Miniature fuses
    • H01H85/0415—Miniature fuses cartridge type
    • H01H85/0417—Miniature fuses cartridge type with parallel side contacts

Definitions

  • An example of a miniature fuse is one having a thickness in the order of 0.2 inch or less and a length in the order of 0.3 inch or less.
  • Miniature fuses used in circuits where high short circuit current and voltage levels are present have been subject to arcing which builds up exceedingly high temperature and pressure conditions in the small space within the fuse which cause the fuse to explode.
  • an object of the present invention to provide a reliable miniature fuse which may be readily mass produced to close resistance tolerances.
  • a related object of the invention is to provide a fuse, preferably a miniature fuse usable at high current and voltage levels,
  • a related object of the invention is to provide a miniature fuse as described which is ruggedly constructed so as to withstand moderately high pressure and temperature conditions therein without danger of exploding.
  • Another object of the invention is to provide a simple and efiicient method of making fuses having the advantages described above.
  • the fuse of the present invention is a miniature fuse having a body made of a molded synthetic plastic insulating material in which is embedded a pair of spaced, juxtaposed, parallel lead wires exposed at opposite ends of the insulating fuse body.
  • the lead wires may project a short distance beyond one end of tie fuse body, where they have sufiicient rigidity to constitute plug connectors insertable into a suitable socket connector, or they may extend a relatively large distance ther-ebeyond where they are flexible to form wrap-around connecting leads for solder connections.
  • a fuse filament extends between the other exposed ends of the lead wires.
  • a cup-shaped cap member encloses the fuse filament carrying end of the fuse body to seal off a space containing the fuse filament.
  • the insulating material of the fuse body in which the lead wires are embedded is extended around the lead wires to a point adjacent and, in one embodiment of the invention, to the very end of the lead wires so that a minimum of lead wire surface is exposed to the space above the fuse body.
  • the fuse body insulation material around the ends of the lead wires most advantageously form spaced insulating posts.
  • the presence of a large body of insulation material contiguous to the portions of the fuse filament remaining after the initial disintegration of a portion thereof inhibits the development of a high energy are between the resulting separated portion of the fuse filament.
  • the space between the insulating posts formed by the fuse body insulating material ensures the initial disintegration of the fuse filament at a point spaced furthest from the lead wires and spaced from the insulating material of the fuse body, to minimize oarbonization due to the heating of the fuse filament which would decrease t-he resistance of the potential are discharge path between the lead wires.
  • an insulating filler material is added above the fuse body so as to embed or encase the fuse filament.
  • a filler material comp-rising an epoxy resin it has been discovered that epoxy resins have especially good arc-quenching qualities.
  • it has excellent adhesive qualities which are used to aid in holding the fuse cap onto the fuse body under the increased pressure conditions occurring when the filament wire disintegrates under high overload. The problem of cap retention due to the pressures building up in the small volume of the fuse interior is sometimes present even in the absence of high energy arcing.
  • FIG. 3 is a transverse section through the fuse of FIG. 2, taken substantially along the line 33 therein;
  • FIG. 4 is an enlarged longitudinal section through a modified miniature fuse forming the most preferred form of the invention.
  • FIG. 5 is a transverse section through the fuse of FIG. 4, taken substantially along the line 55 therein;
  • FIGS. 6 and 7 are views illustrating two steps in the fabrication of the fuse of FIGS. 4 and 5 and FIG. 8 is a fragmentary longitudinal section through a still further modified form of the invention.
  • the fuse element there shown is identified generally by reference numeral 2 and includes a fuse body 4 preferably made of a synthetic plastic thermosetting material, such as phenol formaldehyde or similar material.
  • the fuse body preferably has a generally cylindrical shape and is provided with an outwardly extending peripheral flange 5 formed intermediate the ends thereof.
  • a pair of lead wires 66 are molded or otherwise embedded in the fuse body 4-. The lead wires are in spaced juxtaposed relation and extend parallel to the axis of the cylindrical fuse body 4.
  • the lead Wires 6-4? extend a substantial distance beyond one end of the fuse body 4 thereby to form pigtail connecting leads which may be readily bent in any direction and then soldered to appropriate locations in the circuit in which the fuse is to be connected.
  • the lead wires 6-6 may be cut down to a point adjacent the end of the fuse body 4 to form plug connectors which may be insertable into a socket connector, as shown in the embodiment of the invention illustrated in FIGS. 47.
  • the opposite ends of the lead wires 6-5 are substantially flush with the fuse body 4.
  • the insulating material of the fuse body 4 adjacent the last mentioned ends of the lead wires 6 form short, spaced apart, cylindrical insulating posts 8-8. As illustrated, these posts are spaced a small distance inwardly of the perimeter of the fuse body 4. 1 p
  • a fuse filament 10 of Wollaston wire or the like and of appropriate size for the current rating desired is welded between the outer faces of the lead wires 6-6.
  • the fuse filament rests on the insulating posts which extend beneath an appreciable extent of the fuse filament.
  • a cup-shaped member 12 encloses the fuse filament carrying end of the fuse body 4.
  • the cap member may be made of metal or other material. has a cylindrical body portion 14 enclosed at one end by a circular end wall 16. The cylindrical body portion 14 extends around the cylindrical fuse body 4 and the end thereof rests against the annular shoulder 18 formed by the peripheral flange 5.
  • the cap member 1'2 preferably makes a forced fit around the fuse body 4 and is further held securely thereon by staking the same at various points to form tiny nibs 19 biting into the fuse body 4.
  • the cap member is spaced from the fuse filament 10 and thelead wires 6 to which it is connected and defines a space 20 within the cap member.
  • FIGURE 2 is drawn to scale so that other dimensions of the fuse can be obtained therefrom from these overall dimensions.
  • FIGS. 47 is the preferred form of the invention.
  • This fuse has a fuse body 4 and a cap member 12 which is identical to that previously described in connection with the embodiment of FIGS. 1 through 3.
  • the fuse now being described has lead wires 66 with short projecting ends on the outside of the fuse body for removably supporting the fuse in a suitable miniature socket connector.
  • the opposite ends of the lead wires may be flush with the insulating posts 88 of the fuse body or, as illustrated, extend a very short distance therebeyond.
  • the fuse filament 10 of Wollaston wire or the like is welded as before to the outer faces of the fuse filament, and due to the slightly projecting ends of the lead wires, is spaced slightly above the insulating posts.
  • the major difference between the construction of the fuse now being described and the fuse of FIGS. 1 through 3 is the incorporation of insulating filler material 22 above the fuse body so that it completely envelopes the fuse filament 10.
  • the thickness of the filler material above the fuse filament varies with the current rating of the fuse, the higher the current rating the greater the degree of encasement of the fuse filament.
  • epoxy resins are exceedingly good arcquenching materials and so is the material used as the filler material.
  • the epoxy resins are especially good adhesive materials also and thus aid materially in securing the cap member 12 on the fuse body so that it will remain thereon under the substantial pressure that builds up in the small space 20 within the fuse when the fuse .is blown.
  • the cap member The epoxy filler material 22 may be applied to tne fuse body in a number of ways. Most advantageously, however, it is applied in a two step process as illustrated in FIGS. 6 and 7. Before the cap member is applied to prevent the same from running down the side thereof.
  • the viscous nature of the epoxy material maintains the shape thereof.
  • the uncured epoxy material may be a composition of 14 parts M685 epoxy resin manufactured by the Rubber and Asbestos Corporation of Bloomfield, New Jersey, and one part Cl-I34 curing agent manufactured by the same company.
  • the epoxy material may then be cured at 150 F. for ten minutes.
  • a second layer 22 of the same uncured epoxy material is applied over the cured glob 22 of epoxy material, the second layer having an outside diameter somewhat greater than the outside diameter of the fuse body.
  • the cap member 12 is applied around the fuse body where the second layer of epoxy material makes engagement with the inner walls of the cap member.
  • the second layer'of epoxy material may be allowed to cure at rooi temperature for approximately 8 hours.
  • the cap member may be press fitted over the fuse body and staked in the same manner as the cap member of the embodiments of FIGS. 1 through 3.
  • the epoxy material acts as both an arc-quenching and adhesive material which aids in holding the cap member on the fuse body against the high pressures which build up in the fuse.
  • the epoxy material may be applied in'a single step process.
  • the epoxy material may be applied in'a single step process.
  • viscous uncured epoxy material may run over the sides of the fuse body.
  • the single layer of viscous uncured epoxy material is much thinner and does not run over the sides of the fuse body.
  • the single layer of epoxy material is applied so that it extendsslightly beyond the outer perimeter of the fuse body so that'it makes engagement with the walls of the cap member when the same is press fitted over the fuse body.
  • the resulting single layer of epoxy material may be cured in this same manner as the second layer of epoxy material described above.
  • the embodiment of the invention in FIGS. 4 through 7 may have the same overall dimensions as the embodiments of FIGS. 1 through 3.
  • the fuse of the present invention of the size above described, for example, may be designed for use in circuits carrying 5 amperes and higher at volts.
  • the fuse may be designed to'blow, for example, at a minimum overload of percent of rated current in ten seconds or less.
  • the preferred form of the present invention can operate in power circuits capable of providing short circuit currents of 10,000 amperes.
  • the fuse filament is made from Wollaston wire which has a platinum core encased in a sheath of silver. For current ratings lower than 60 ma,
  • the bare platinum wire is quite small and the silver sheath must be etched away leaving a platinum wire of such small diameter (see filament 10" in FIG. 8) that it becomes difiicult to weld the same to the lead wires. In such case, it is more feasible to solder the ends of the fuse filament between extended ends of the lead wires 6-6' as shown in the embodiment of FIG. 8. Low current ratings of this order do not present high energy arcing problems, making unnecessary some of the features of the present invention discussed above including the encasement of the fuse wire l0 in epoxy material or the like.
  • a layer 22" of epoxy material is applied upon the top of the fuse body 4 below the fuse filament 18 in the same manner as the single layer described above so that the epoxy material seals or secures the cap member 12 around the fuse body. If perchance, a high energy are should develop between the lead wires 66, the arc will be quenched when the lead wires burn down to the level of the epoxy layer 22". The strong adhesive quality of the epoxy material holds the cap member on the fuse body even under the resulting severe high pressure conditions in the small space within the fuse.
  • a miniature fuse comprising: an integral fuse body made of a solid insulating material in which is embedded a pair of spaced, juxtaposed lead wires extending to opposite ends of said fuse body, one of the corresponding ends of said lead wires forming terminal connections for the fuse, said insulating material of said fuse body forming spaced insulating posts around the opposite end portions of the lead wires, a fuse filament extending between the exposed latter end portions of the lead wires, said fuse filament disintegrating under the heat generated by a given current level, an imperforate cap member enclosing and sealing the fuse filament carrying end of the fuse body, and a solid arc-quenching material filling the space between said fuse body and at least the portions of said fuse filament adjacent to said lead wires, the arc-quenching material occupying only a part of the space in the cap member to leave a pressure-relieving space.
  • a miniature fuse comprising: an integral fuse body made of a solid insulating material through which extends a pair of spaced, juxtaposed lead wires projecting beyond opposite ends of said fuse body, one of the corresponding projecting ends of said lead wires forming exposed terminal connections for the fuse, a fuse filament extending between the other projecting ends of the lead Wires, said fuse filament disintegrating under the heat generated by a given current level, said insulating material of said fuse body extending around the lead wires adjacent the latter projecting ends of the lead wires to form spaced insulating posts, and an imperforate cup-shaped cap member enclosing and sealing the fuse filament carrying end of the fuse body.
  • a miniature fuse comprising: an integral fuse body made of a solid insulating material in which is embedded a pair of spaced, juxtaposed lead Wires extending to opposite ends of said fuse body, one of the corresponding ends of said lead wires forming terminal connections for the fuse, a fuse filament extending between the other ends of the lead wires, said fuse filament disintegrating under the heat generated by a given current level, an imperforate cap member enclosing and sealing the fuse filament carrying end of the fuse body, and a solid arcquenching material bridging the space between said fuse body and said fuse filament around at least the portions of the fuse filament adjacent the ends of said lead wire, the arc-quenching material occupying only a part of the space in the cap member to leave a pressure-relieving space.

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  • Fuses (AREA)
US75710A 1960-12-14 1960-12-14 Miniature electrical fuse Expired - Lifetime US3110787A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US75710A US3110787A (en) 1960-12-14 1960-12-14 Miniature electrical fuse
GB44273/61A GB969654A (en) 1960-12-14 1961-12-11 Fuse
DE1413956*CA DE1413956C3 (de) 1960-12-14 1961-12-12 Kleinschmelzsicherung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US75710A US3110787A (en) 1960-12-14 1960-12-14 Miniature electrical fuse

Publications (1)

Publication Number Publication Date
US3110787A true US3110787A (en) 1963-11-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
US75710A Expired - Lifetime US3110787A (en) 1960-12-14 1960-12-14 Miniature electrical fuse

Country Status (3)

Country Link
US (1) US3110787A (enrdf_load_stackoverflow)
DE (1) DE1413956C3 (enrdf_load_stackoverflow)
GB (1) GB969654A (enrdf_load_stackoverflow)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3311967A (en) * 1962-07-30 1967-04-04 Cornell Dubilier Electric Method of manufacturing encapsulated components
US3319027A (en) * 1965-01-26 1967-05-09 Chase Shawmut Co Encapsulated fuse structure for polyphase circuits
US3337705A (en) * 1964-01-27 1967-08-22 Chase Shawmut Co Fusible protective device
US3436711A (en) * 1967-11-20 1969-04-01 Littelfuse Inc Miniature current overload fuse
US3739313A (en) * 1971-02-19 1973-06-12 Mc Graw Edison Co Protectors for electric circuits
US4071837A (en) * 1974-07-26 1978-01-31 Bassani Ticino S.P.A. Fuse cartridge
US4267543A (en) * 1979-11-13 1981-05-12 San-O Industrial Co., Ltd. Miniature electric fuse
US4349805A (en) * 1979-11-13 1982-09-14 San-O Industrial Co., Ltd. Quick-acting micro-fuse
US4599596A (en) * 1982-12-01 1986-07-08 S.O.C. Corporation Chip type fuse
US4751489A (en) * 1986-08-18 1988-06-14 Cooper Industries, Inc. Subminiature fuses
US4899123A (en) * 1987-12-16 1990-02-06 Wickmann-Werke Gmbh High current capacity sub-miniature fuse
US5446436A (en) * 1992-11-04 1995-08-29 Space Systems/Loral, Inc. High voltage high power arc suppressing fuse
US20100148914A1 (en) * 2008-12-17 2010-06-17 Essie Rahdar Radial fuse base and assembly
US20120133480A1 (en) * 2010-11-30 2012-05-31 Chun-Chang Yen Overload protection combination structure for a base of a fuse
US20130328658A1 (en) * 2011-02-18 2013-12-12 Yazaki Corporation Fuse and fuse attachment structure
US20130342305A1 (en) * 2012-06-25 2013-12-26 Jui-Chih Yen Structure of positioning cover of miniature fuse device
US20140266565A1 (en) * 2013-03-14 2014-09-18 Littelfuse, Inc. Laminated electrical fuse
JP2014241196A (ja) * 2013-06-11 2014-12-25 三菱マテリアル株式会社 ヒューズ

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5910011B2 (ja) * 1975-04-03 1984-03-06 サンオウサンギヨウ カブシキガイシヤ 超速断型ヒユ−ズ
JPS5852289B2 (ja) * 1979-09-08 1983-11-21 エス・オ−・シ−株式会社 超速断型小型ヒユ−ズ
DE3033323A1 (de) * 1979-09-11 1981-03-26 Rohm Co. Ltd., Kyoto Schutzvorrichtung fuer eine halbleitervorrichtung
DE3920198A1 (de) * 1989-06-21 1991-01-10 Wickmann Werke Gmbh Elektrische sicherung mit zwei schmelzleitern

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1288724A (en) * 1918-06-08 1918-12-24 Walter O Snelling Electric safety-fuse.
US2117346A (en) * 1937-05-15 1938-05-17 Earl R Millis Safety type fuse assembly
US2830156A (en) * 1956-12-21 1958-04-08 Jr Arthur A Burgess Shock and vibration resistant fuse
US2840668A (en) * 1956-02-24 1958-06-24 Joslyn Mfg & Supply Co Fuse assembly for cutouts
US2852641A (en) * 1955-12-09 1958-09-16 Gorden W Valentine Flashproof fuse plugs
US2895031A (en) * 1958-07-24 1959-07-14 Chase Shawmut Co Fusible protective devices

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1288724A (en) * 1918-06-08 1918-12-24 Walter O Snelling Electric safety-fuse.
US2117346A (en) * 1937-05-15 1938-05-17 Earl R Millis Safety type fuse assembly
US2852641A (en) * 1955-12-09 1958-09-16 Gorden W Valentine Flashproof fuse plugs
US2840668A (en) * 1956-02-24 1958-06-24 Joslyn Mfg & Supply Co Fuse assembly for cutouts
US2830156A (en) * 1956-12-21 1958-04-08 Jr Arthur A Burgess Shock and vibration resistant fuse
US2895031A (en) * 1958-07-24 1959-07-14 Chase Shawmut Co Fusible protective devices

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3311967A (en) * 1962-07-30 1967-04-04 Cornell Dubilier Electric Method of manufacturing encapsulated components
US3337705A (en) * 1964-01-27 1967-08-22 Chase Shawmut Co Fusible protective device
US3319027A (en) * 1965-01-26 1967-05-09 Chase Shawmut Co Encapsulated fuse structure for polyphase circuits
US3436711A (en) * 1967-11-20 1969-04-01 Littelfuse Inc Miniature current overload fuse
US3739313A (en) * 1971-02-19 1973-06-12 Mc Graw Edison Co Protectors for electric circuits
US4071837A (en) * 1974-07-26 1978-01-31 Bassani Ticino S.P.A. Fuse cartridge
US4267543A (en) * 1979-11-13 1981-05-12 San-O Industrial Co., Ltd. Miniature electric fuse
US4349805A (en) * 1979-11-13 1982-09-14 San-O Industrial Co., Ltd. Quick-acting micro-fuse
US4599596A (en) * 1982-12-01 1986-07-08 S.O.C. Corporation Chip type fuse
DE3716391A1 (de) * 1986-08-18 1988-07-28 Cooper Ind Inc Subminiatur-sicherung
US4751489A (en) * 1986-08-18 1988-06-14 Cooper Industries, Inc. Subminiature fuses
US4899123A (en) * 1987-12-16 1990-02-06 Wickmann-Werke Gmbh High current capacity sub-miniature fuse
US5446436A (en) * 1992-11-04 1995-08-29 Space Systems/Loral, Inc. High voltage high power arc suppressing fuse
US20100148914A1 (en) * 2008-12-17 2010-06-17 Essie Rahdar Radial fuse base and assembly
US8576041B2 (en) * 2008-12-17 2013-11-05 Cooper Technologies Company Radial fuse base and assembly
US20120133480A1 (en) * 2010-11-30 2012-05-31 Chun-Chang Yen Overload protection combination structure for a base of a fuse
US20130328658A1 (en) * 2011-02-18 2013-12-12 Yazaki Corporation Fuse and fuse attachment structure
US9378911B2 (en) * 2011-02-18 2016-06-28 Yazaki Corporation Fuse and fuse attachment structure
US20130342305A1 (en) * 2012-06-25 2013-12-26 Jui-Chih Yen Structure of positioning cover of miniature fuse device
US20140266565A1 (en) * 2013-03-14 2014-09-18 Littelfuse, Inc. Laminated electrical fuse
JP2014241196A (ja) * 2013-06-11 2014-12-25 三菱マテリアル株式会社 ヒューズ

Also Published As

Publication number Publication date
DE1413956A1 (de) 1969-01-23
DE1413956B2 (enrdf_load_stackoverflow) 1975-01-09
GB969654A (en) 1964-09-16
DE1413956C3 (de) 1975-08-28

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AS Assignment

Owner name: TORONTO-DOMINION BANK, THE, AS AGENT

Free format text: SECURITY INTEREST;ASSIGNOR:TRACOR, INC.;REEL/FRAME:004810/0209

Effective date: 19871216

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Free format text: SECURITY INTEREST;ASSIGNORS:TRACOR, INC.;LITTLEFUSE, INC.;TRACOR AEROSPACE, INC.;AND OTHERS;REEL/FRAME:005234/0127

Effective date: 19880801

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Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:BANK OF AMERICA NATIONAL TRUST AND SAVINGS ASSOCIATION AS COLLATERAL AGENT;REEL/FRAME:005957/0562

Effective date: 19911220

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Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:BANK OF AMERICA NATIONAL TRUST AND SAVINGS ASSOCIATION AS COLLATERAL AGENT;REEL/FRAME:005957/0542

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