US3909767A - Miniature plug-in fuse - Google Patents
Miniature plug-in fuse Download PDFInfo
- Publication number
- US3909767A US3909767A US432980A US43298074A US3909767A US 3909767 A US3909767 A US 3909767A US 432980 A US432980 A US 432980A US 43298074 A US43298074 A US 43298074A US 3909767 A US3909767 A US 3909767A
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- US
- United States
- Prior art keywords
- fuse
- plug
- housing
- forming
- 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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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
- H01H69/02—Manufacture of fuses
-
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
- H01H69/02—Manufacture of fuses
- H01H2069/027—Manufacture of fuses using ultrasonic techniques
Definitions
- a plug-in fuse assembly comprising a preferably narrow elongated housing made of insulating material in which is mounted a plug-in fuse element consisting solely of a stamping from a strip of fuse metal which preferably forms both a pair of parallel terminal-forming blades projecting from the inner side of the housing and a fuse-forming link enveloped by the housing.
- the fuse link interconnects current carrying extensions of the parallel terminal-forming blades and is of much smaller cross-sectional area than the terminal-forming blades and the current-carrying extensions thereof.
- the ends of the housing are adapted to be grasped by the users fingers for insertion into or removal from a mounting panel where a number of assemblies can be placed in closely laterally spaced relation.
- the outer wall of the housing is most advantageously transparent so the fuse link is readily visible when the fuse assembly is mounted in such closely laterally spaced relation on a panel with other similar fuse assemblies.
- the present invention relates to miniature-current overload fuses which, whether they are rated to carry only a few amperes or as much as 30 amperes. occupy a space which is only afraction of the space occupied by the conventional glass envelope cylindrical fuses:
- An overload fuse capable of carrying currents of the above range of magnitudes commonly comprise a sealed cylindrical glass envelope with cylindrical terminals projecting from the ends thereof and a fuse link extending between the fuse terminals within the sealed cylindrical envelope. Fuses of this type having current ratings of 10-30 amperes commonly have lengths of the order of magnitude of over one inch and, together with the mounting terminals with which they are associated, an overall width of approximately one quarter inch andhigher. Some of the disadvantages 'ofthis type of fuse are the large space requirements for mounting the same and difficulty in-removing them from mounting clips.
- the miniature fuses heretofore developed have been a substantial improvement over the conventional cylindrical glass envelope fuses, they'still left much to be desired from the standpoint of their cost of manufacture and protection to the user.
- the fuse link was exposed so that the insertion thereof into a shorted circuit would blow the same and spew fuse material onto the person inserting the fuse.
- the fuse link was enclosed in a transparent hous ing having a handle extending from the outer walls thereof, the fuse was relatively expensive to manufacture, it has less reliability than the fuse of the present invention, and the fuse link was only visible on the side of the housing because the handle obstructed a frontal view thereof, so the fuse link could not be seen when the fuse was mounted between another pair' of similar closely spaced fuses on a mounting panel. Also. the handle could not be easily grasped due to the small clearance between adjacent fuses.
- a related object of the invention is 'to provide a miniature fuse having a housing providing an insulated gripping surface and a shield protecting the user from being contacted by the fuse material as an inserted fuse is blown, and which further can be easily inserted into or removed from an appropriate female connector on amounting panel where the connectors are very closely spaced, and also preferably wherein the fuse link thereof is readily visible when the. fuse is mounted on such a mounting panel.
- the design of the fuses were such that the external configuration and dimensions of the fuses were identical for widely varying current ratings thereof. It was. therefore, readily possible for a fuse having a very high current rating, such as 20-30 amperes. to be inadvertently placed into a connector associated with a circuit where the current rating may be from 5-15 amperes. creating a very hazardous operating condition. While these fuses were generally marked or color coded to indicate their fuse ratings, the user could readily make a mistake by misreading the usually small current rating markings or complicated color codes.
- Another object of the invention is to provide a fuse design where, although the different fuse assemblies have substantially identical configurations and size, the difference between relatively high and relatively low current rated fuses can be readily detected.
- the terminals have cylindrical pin-like contigurations molded into bases of insulating material, and the fuse links were soldered between the inner ends of these terminals.
- the presence of solder connections sometimes created problems of reliability resulting from corrosion or hot spots due to poor solder connections or deterioration with age.
- another object of the present invention is to provide a miniature fuse having features satisfying one or more of the objectives previously discussed and, in addition, are devoid of the corrosion or hot spot problems referred to.
- a plug-in fuse element consisting solely of a singlc'pi'ece stamping from a sheet or strip of fuse metal which forms a pair of spaced, generally parallel, substantially coplanar terminal-forming blade portions to be received in a pair ofprcssurc clip terminals or the like supported in a mounting panel, the terminalforming blade portions having substantially coplanar longitudinal current-carrying extensions at the inner end portions thereof which are interconnected by a transversely extending generally coplanar fuse-forming link portion of much smaller cross sectional area than the terminal-forming blade portions and the .currentcarrying extensions thereof.
- the smaller cross sectional area of the fuse link-forming portion of the plug-in fuse element is most advantageously achieved by reducing both the width and thickness thereof relative to that of the other current-carrying portions of the plug-in fuse clement.
- Reduction in thickness of the fuse linkforming portion can be achieved in a number of ways, such as by milling and/or compressing the metal, the combination of the two methods being preferred.
- the just described plug-in fuse element can be used as a fuse by merely plugging it into pressure clip terminals or the like without any additional elements added thcrcto, or can be mounted within a housing in a mannor to he described, which is the preferred form of the invention.
- the plug-in fuse clcmcntjust described with or without a housing can be readily mass produced by simply stamping the same from the end of a strip of such fuse metal, after selected areas thereof have been milled and/or compressed to reduce the cross sectional area of the portions of the strip which are to constitute the fuse link portion of the plug-in fuse elements to be severed therefrom.
- the terminalforming blade portions of the plug-in fuse element are provided with transversely projecting wings when the fuse has a relatively high current rating, giving the terminals the appearance of a relatively massive and, therefore, high current-carrying capacity terminals, and preventing their insertion into low current fusereceiving sockets.
- the above one piece plug-in fuse element forms an assembly with a housing made of insulating material which provides insulated gripping surfaces for the assembly and forms a shield which prevents the spewing of fuse metal into the surrounding atmosphere when the fuse is blown.
- the housing can be comprised of two confronting housing halves snapped around the plug-in fuse element, the housing is most advantageously a one piece molded element having an opening in the inwardly facing side the'reof into which the plug-in fuse element is inserted into the housing.
- the housing is most advantageously a narrow elongated shape defined by relatively closely spaced side walls bridged by narrow end walls and a narrow outer wall.
- the plug-in fuse element may be anchored in place in the housing by forming projecting proportions in the housing which extend into apertures in the plug-in fuse-element, the projections'being most advantageously formed by a cold staking or ultrasonic material softening operation.
- At least the aforementioned outer wall of the housing i.e. the wall which faces outwardly when the fuse assembly is mounted on a mounting panel), and preferably the entire housing, is most advantageously made of a transparent material.
- the fuse link portion of the plug-in fuse element is positioned at a point contiguous to this transparent outer wall where it can be readily seen at all times.
- At least the longitudinal end portions of the outer wall preferably overhang the rest of the housing to provide convenient gripping surfaces at the ends of the housing, so that the plug-in fuse assembly can be readily grasped for insertion into and removal from any point in a mounting panel, despite small clearancesbetween adjacentlymounted plug-in fuse assemblies.
- the housing is preferably provided with a pair of terminal access openings in the outer wall thereof, which openings preferably taper inwardly to a point in alignment with the innermost ends of the terminal extensions, so resistance measuring test probes are guided into contact with the terminal-forming blade portions of the-plug-in fuse element to test for continuity on the assumption that the fuse link might have a crack in it which is not readily visible through the above described transparent housing outer wall.
- the defining walls of the access openings preferably have skirt portions extending therefrom which act as shield walls to prevent blown fuse material from reaching the terminal access openings.
- a plug-in fuse assembly consisting of a single stamping forming both the terminal-forming blade portions and the fuse-forming link portions of a plug-in fuse element, and a housing into which such single piece stamping may be readily inserted and locked into place.
- the design of the fuse assembly lendsitself to a low cost mass production assembly thereof wherein various stamping and milling operations forming attached blanks for making many plug-in fuse elements are first performed on longitudinally spaced areas of a fuse metal strip.
- a plug-in fuse assembly is completed by applying a housingover the end of the strip, securing each housing in place and severing a completed plug-in fuse assembly from the strip, the housing applying and severance operations on the strip being repeated in sequence to mass produce the plug-in fuse assemblies.
- FIG. I is a perspective view of a preferred form of the plug-in fuse assembly of the invention.
- FIG. 2 is an exploded view of the housing and plug-in fuse element making up the plug-in fuse assembly of FIG. I;
- FIG. 3 is atop plan view of the plug-in fuse assembly of FIG. 1; 7
- FIG. 4 is a vertical longitudinal sectional view through the fuse assembly shown in FIG. 3, taken along section line 4-4 therein;
- FIG. 5 is an enlarged bottom view of the plug-in fuse assembly of FIG. 1;
- FIG. 6 is an enlarged transverse vertical sectional view through the fuse assembly shown in FIG. 4, taken along section line 66 thereof;
- FIG. 7 is an enlarged vertical transverse sectional view through the center portion of the fuse assembly shown in FIG. 4, taken along section line 7-7 thereof;
- FIG. 8 is a greatly enlarged framentary sectional view through the fuse link portion of the plug-in fuse assembly shown in FIG. 2, taken along section line 88 thereof, and showing the manner in which the fuseforming link portion thereof is reduced in thickness by like that shown in FIGS. 1-10 but which has been modified by adding a magnifying-lens to the outer wall of the housing thereof;
- FIG. 12 illustrates: a fragmentary side 'elevational view of a plug-in fuse assembly modified from that shown in FIG. 1-11 in that the wings on the terminalforming' blade portions of the plug-in fuse element have been removed to indicate a lower current rated fuse.
- FIGS. 1-4 there is shown a plug-in fuse assembly 2- made of only two component parts, namely a plug-in fuse element 4 which most advantageously isa single stamping from a strip of fuse metaL- and a housing 6 which most advantageously is a singlepiece synthetic plastic molded part defining aspace therein intowhich portions of the plug-in fuse element 4 extend and are secured in any suitable way, but more preferably by a cold staking operation to be described, Y
- the plug-in fuse element 4 has terminal-forming blade portions 88 extending in spaced parallel relationship from the inner or bottom margin of thehousing 6 in what will be referred to as a downward or inwardly extending direction.
- the ends of the terminalforming blade portions 8-8 of the plug-in fuse element are most advantageously tapered at 99 to form pointed end portions which readily slip into place between the confronting walls ofconventional spring clip terminals (not shown) supported in mounting panel apertures.
- the terminal-forming blade portions 88 of the plug-in fuse element 4 have inwardly extending rough current rating indicating wings or projections 10-10, to provide a more massive appearance'to the exposed terminal-forming portions 88 of the plug-in fuse element 4, identifying the fact that the fuse assembly is one having a relatively high current rating, such as in the range of from'20 to 30 amps. (The exact current rating is indicated by indieia 13 on the outer walls of the housing as shown in FIGS. 1-3. Where a plug-in fuse element has a relatively low current rating such as 5 to 15 am'peres, the wings 1010 are eliminated so the user knows immediately that the plug-in fuse element which does not have anywings is for a lower current rated application. Such a plug-in fuse element is shownin FIG. 12.)
- plug-in fuse element 4 is stampedfrom a strip 4' of fuse metal (FIGS. 9 and 10). Prior to the plug-in fuse element being severed from the strip 4. the wings l0l0 are interconnected to form a rigidifying web 10 for the strip 4'. and so a narrow piece of material is stamped 'from' the strip to form the terminal-forming hladeportions 8-8 and a'gap 12 between the same.
- the tapered portions 99 of the terminal-forming blade portions 8-8 may be formed by dies (not shown) during the operation which severs the plug-in fuse elcment from the strip.
- the termimil-forn'iing blade portions 8-8 have current-carrying extensions 14l4 projecting into the aforementit'mcd space formed by the housing 6, which current-carrying extensions project well up into the upper or outer extremities of the housing 6. to be contiguous "to thc frontfor outer wall of the housing to be described.
- the outer end portions of the currentcarrying extensions 14-14 are i'ntcrconncctcd'hy a fuse-forming link portion which is preferably both narrower in width and much smaller in thickness than theother current-carrying portions of the plug-in fuse element 4.
- the current-carrying capacity of the fuseforming link portion 20 may be varied by varying the fuse metal composition or by varying the width and/or the thickness of the fuse-forming link portion.
- the current-carrying extensions 14-14 join the fuse-forming link portion 20 of the plug-in fuse element 4 by tapered portions 22-22. All of the various parts of the plug-in fuse element are substantially in coplanar relation so no metal beinding operations need be performed in the process of making the same.
- a reduction of the thickness of the metal of the fuse-forming link portion 20 is preferably achieved by a milling operation which mills away the metal on one side thereof to form a generally curved depression 24 best shown in FIG. 8.
- the outer portions of this depression 24 are identified by reference numerals 24a-24a and represent the milled surfaces.
- the flattened intermediate portion 24b of the depression 24 is obtained by squeezing or pressing the metal to further reduce this thickness thereof. For example. it was found that in one plug-in fuse element.
- the thickness of the fuse metal was reduced from an initial thickness of 0.027 inches to about 0.005 inches by a milling operation, and a further reduction of 0.002 inches was achieved by a pressing operation, ending up with a minimum thickness of the fuse-forming link portion 20 of 0.003 inches.
- the precise thickness of the fuse metal depends upon the fuse metal composition, the width of the fuse-forming link portion 20 and the desired current rating of the fuse.
- the plug-in fuse element 4 may be used as a fuse element without its incorporation in the housing 6. for safety reasons it'is preferred to incorporate the plug-in fuse element 4 in the housing 6. To this end and for reasons to be explained.
- the outer end portions of the terminal extensions 1414 are provided with outwardly or upwardly projecting tabs 11 I12 l adapted to make contact with test probes to test for the continuity of the fuse-forming link portion 20 of the plug-in fuse element 4'.
- anchoring apertures 26-26 and 28-28 are respectively formed in the terminal extensions 14-14 to receive anchoring projections to be described formed in the housing walls.
- the housing 6 could be made in two separate parts snappable together in accordance with the broadest aspects of the invention.
- the housing is most advantageously a single piece molded part as previously'indicated.
- it preferably has a narrow elongated configuration formed by relatively closely spaced side walls generally indicated by reference numeral 30-32. the side walls having end portions 3011-3211 and 3011-3211 which are spaced together much more closely than the central or intermediate portions 30b-32b thereof.
- the side walls 30-32 are interconnected at their end margins by narrow end walls 3434. and at their outer or top margins by an outer wall 38 which overhangs the rest of the housing to form downwardly facing shoulder 40-40 at the longitudinal ends of the outer wall 38 and downwardly facing shoulders 4040' along the longitudinal side margins of the housing 6.
- the shoulders 40'--40' arc coplanar continuations of the shoulders 40-40 at the ends of the housing 6.
- Terminal access openings 4242 are provided in the outer wall 38 adjacent the opposite end portions thereof in alignment withthe loeationof the test probereceiving tabs 18-18 of the plug-in fuse element 4.
- the walls of the terminal access openings 4242 taper down to an inner dimension which approximates the width of the test probe-receiving tabs 18l8, so that test probes can be guided into contact with the tabs 18-48.
- the terminal access openings 4242 communicate with the aforementioned plug-in fuse element receiving space in the housing 4.
- the portions 4444 of this space immediately beneath the access openings 4242 are relatively small because of the close spacing of the sidewall portions 30a-32a of the housing at these points, the width of the space portions 4444 as viewed in FIG.
- the upper wall 38 is provided with downwardly extending skirts 4646 which act as shield walls preventing spewing fuse metal from gaining entrance to the terminal access openings 4242.
- These shield forming skirts 4646 also act as stop or abutment shoulders for the current-carrying extensions l414 of the terminalforming blade portions 8--8 of the plug-in fuse element.
- the fuse-forming link portion of the fuse element 4 is positioned in a relatively wide-portion 44' (FIG. 7) of the housing interior, to provide for free circulation of air around the center portion of the fuse-forming link portion, which is the part thereof which first melts under excessive current flow, so heat does not accumulate which would adversely affect the current at which the fuse will blow.
- the narrow and wide portions 4444 and 44 of the space within the housing 6 open onto the bottom of the housing for the full extent thereof through an entry opening 48.
- the opening 48 permits the housing to be pushed over the end portion of the pre-stamped and milled strip 4 from which a completed fuse element is punched immediately following the securing of the housing 6 to the end portion of the strip as previously indicated.
- the housing 6 is preferably a molded part made of a transparent synthetic plastic material so that the fuseforming filament portion 20 of the plug-in fuse element 4 is readily visible through the intermediate portion of the outer wall 38, to which the fuse-forming link portion 20 is in space but relatively contiguous relation.
- the housing is preferably molded ofa high temperature transparent nylon made by Belding Chemical Industries of New York City, New York (Product Code No. LX- 3330).
- housing interior 6 could be made with resilient projections which snap into the anchoring apertures 26-26 and 2828 in the plug-in fuse element 4, it is preferred to secure the housing in place by forming projections 52 and 54, by a cold staking operation, ultrasonic melting or other operation, which enter the anchoring apertures 2626 and 28-28 of the plug-in fuse element 4.
- the depressions 56 and 58 left by a staking operation are shown in the side wall 30 in FIGS 2 and 6.
- the outer wall of the housing of the fuse assembly can be modified as shown in FIG. 11 wherein thehousing outer wall 38' ofa modified fuse assembly 2' is thickened and curved to form a magnifying lens. Also, as shown in FIG. 12, the fuse assembly 2 is a low current rated fuse assembly as evidenced by the absenceof wings on the terminalforming blade portion 88 on the plug-in fuse element 4. I l
- the exemplary embodiments of the invention just described have thus provided an exceedingly reliable, compact and inexpensive to manufacture plug-in fuse assembly which can be readily inserted into and removed from suitable closely spaced spring clip terminal connectors in a mounting panel by grasping the shoulders 4040 at the longitudinal ends of the housing 6.
- the transparent material out of which the housing 6 is made formsa convenient window in the outer wall through which the fuse-forming link portion of the plug-in fuse element can be viewed when the plug-in fuse assembly is mounted on the mounting panel.
- the terminal access openings enable test equipment to test the continuity of the fuse if the user does not desire to rely solely on a visual observation of the fuse-forming link portion of the fuse.
- the presence or absence of wings on the terminal-forming blade forming of the plug-in fuse element immediately informs the user whether he has selected a relativelyhigh or low current rated fuse, although the indicia 13 should be examined to determine the actual current rating.
- a plug-in fuse element comprising a one-piece coplanar plate-like body ofsfuse metal which body comprises a pair of juxtaposed laterally spaced generally parallel terminal-forming blade portions to be received by pressure clip terminals in a mounting panel, the terminal-forming blade portions having current-carrying extensions at.the inner end portions thereof which are interconnected by a transversely extending fuse- ,forming link portionof much smaller cross-sectional area than said terminal-forming blade portions and the current-carrying extension s thereof, said terminalforming blade portions, current-carrying extensions at the inner end portions thereof and transversely extend ing fuse-forming link portion being substantially all in the same plane parallel to the outer faces of the platelike body forming the same. 2
- the plug-in fuse element of claim 3 combined with a housing into which the plug-in fuse element is inserted and isimmovably held by portions thereof extending into said aperture of said plug-in fuse element, said housing forming an insulated gripping body for the plug-in fuse assembly and a shield for spewing blown fuse metal ofsaid fuse'forming link portion of the plugin fuse element when the current rating thereof is exceeded.
- a plug-in fuse assembly consisting solely of a housing made of insulating material and a plug-in fuse element secured within said housing, said housing being a synthetic plastic member which is open at the inwardly facing side thereof for the full width of the plug-in fuse .element so as initially to receive said plug-in fuse element when it is assembled therewith, said housing and plug-in fuse element having interlocking means for securing the plug-in fuse element within the housing, said plug-in fuse element being made entirely of a fuse metal and comprising a one-piece element having a pair of terminal-forming blade portions to be received by pressure clip terminals in a mounting panel, the terminal-forming blade portions having current-carrying extensions at the inner end portions thereof which are interconnected by a fuse-forming link portion of much smaller cross-sectional area-than said terminal-forming blade portions and said current-carrying extensions, said terminal-forming blade portion of said plug-in fuse element being exposed on the outside of said housing, and said housing forming an insulated gripping body for the plug-in fuse assembly
- plug-in fuse assembly of claim 7 wherein the plug-in fuse element is a one-piece sheet metal stamping from a sheet of fuse metal.
- the plug-in fuse assembly of claim 7 wherein said terminal-forming blade portions of the plug-in fuse element extend generally in spaced parallel coplanar relation with one another, said current-carrying extension there of and said fuse-forming link portion; and the housing has an outer wall positioned opposite the fuseforming link portion of the plug-in fuse element and facing in the opposite direction from the direction in which said terminal-forming blade portions of the plugin fuse element extend, said outer wall forming at least part of a shield preventing the outward spewing of fuse metal under fuse blowing current conditions.
- a plug-in fuse assembly comprising a housing made of insulating material forming an insulated gripping body for the plug-in fuse assembly; a pair of conductive plug-in terminals on the outside of the housing having extensions thereof in the housing, a fuse link made of a fuse metal extending between the terminal extensions in the housing, said housing having terminal access openings which expose said terminal extensions, and said housing providing shield wall means for preventing the spewing of blown fuse metal outside of the housing when fuse blowing current flows through said fuse link, the defining walls of said access openings having skirt portions extending inwardly therefrom which, in conjunction with other wall portions of the housing, act as said shield wall means to prevent blown fuse material from spewing outside of the housing. 5 12.
- the plug-in fuse assenibly of claim 11 wherein said access openings have inwardly tapering walls to guide resistance measuring test probes into continuity measuring positions within the housing.
- a plug-in fuse assembly consisting solely of a housing made of insulating material and a plug-in fuse element secured within said housing, said housing forming an insulated gripping body for the plug-in fuse assembly and being defined by closely spaced side walls, end walls bridging the end portions of the side walls and an outer wall bridging the outer margins of the side walls, at least a part of said housing being made of substantially transparent material permitting visibility of a part of the interior of the housing at this point; and a plug-in fuse unit mounted in said housing and consisting of a one piece plate-like body made of fuse metal and including a pair of spaced juxtaposed generally parallel terminal portions to be received by female pressure clip terminals or the like in a mounting panel and projecting inwardly from opposite end portions of the housing and a fuse link extending transversely between coplanar extensions of said terminal portions within said housing and visible in said transparent portion of said housing, said terminal-forming blade portions, current-carrying extensions at the inner end portions thereof and transversely extending fuse-forming link portion being
- a plug-in fuse assembly comprising a housing made of insulating material forming an insulated gripping body for the plug-in fuse assembly and defined by closely spaced side walls, end walls bridging the end portions of the side walls and an outer wall bridging the outer margins of the side walls, at least an intermediate portion of said outer wall being made of substantially transparent material permitting visibility of the interior of the housing at this point; and a plug-in fuse unit mounted in said housing and consisting of a pair of spaced parallel terminal portions to be received by female pressure clip terminals or the like in a mounting panel and projecting inwardly from opposite end portions of the housing, and a fuse link extending transversely between coplanar extensions of said terminal portions within said housing and visible in said transparent portion of said outer wall of the housing, said outer wall of the housing being provided with terminal access openings opposite the extensions of said terminal portions of said plug-in fuse unit which extend adja cent to said outer wall from the inner side of the housing, said terminal access openings being adapted to receive continuity test probes to make engagement with BEST AVAIL
- a plug-in fuse assembly consisting solely of a housing made of insulating material and an all metal plug-in fuse element secured Within said housing.
- said housing being a synthetic plastic member defined by closely spaced side walls. end walls bridging the end portions of the side walls and an outer wall bridging the outer margins of the side walls.
- said housing and plug-in fuse element having interlocking means for securing the plug-in fuse element within the housing.
- said plugin fuse element having a pair of terminal forming blade portions to be received by pressure clip terminals in a mounting panel and projecting in laterally spaced parallel relation from said housing on the side thereof opposite to that containing said outer wall. the terminalforming blade portions having current-carrying extensions at the inner end portions thereof which are interconnected by a fuse-forming link portion.
- said tenninal-forming blade portions of the plug-in fuse element being in substantially coplanar relation with one another.
- said eurrent-carrying extensions thereof and said fuse-forming link portion. and said housing providing a narrow space which closely receives the current carrying extensions of said plug-in fuse element and a relatively wide space adjacent the fuse-forming link portion. and said housing forming an insulated gripping body for the plug-in fuse assembly and a shield for spewing blown fuse metal of said fuse-forming link portion of the plug-in fuse element when the current rating thereof is exceeded.
- said hous ing is a one-piece molded synthetic plastic member which is open at the inwardly facing side thereof for the full width of the plug-in fuse element so as initially to receive said plug-in fuse element when it is assembled therewith.
Abstract
Description
Claims (19)
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US432980A US3909767A (en) | 1974-01-14 | 1974-01-14 | Miniature plug-in fuse |
DE2560553A DE2560553C2 (en) | 1974-01-14 | 1975-01-07 | |
DE2500364A DE2500364C2 (en) | 1974-01-14 | 1975-01-07 | Miniature plug-in fuse |
DE2560126A DE2560126C2 (en) | 1974-01-14 | 1975-01-07 | Method for producing a miniature electrical plug-in fuse |
GB627/75A GB1500183A (en) | 1974-01-14 | 1975-01-07 | Electrical current overload fuses |
DE7500226U DE7500226U (en) | 1974-01-14 | 1975-01-07 | Plug-in fuse |
CA217,829A CA1050592A (en) | 1974-01-14 | 1975-01-13 | Miniature plug-in fuse and method of making same |
JP619475A JPS5436726B2 (en) | 1974-01-14 | 1975-01-13 | |
US05/610,978 US3962782A (en) | 1974-01-14 | 1975-02-08 | Method of making a miniature plug-in fuse |
US05/693,936 US4040175A (en) | 1974-01-14 | 1976-06-08 | Method of making a miniature plug-in fuse with fragile fuse link |
CA313,920A CA1061385A (en) | 1974-01-14 | 1978-10-23 | Miniature plug-in fuse and method of making same |
HK647/81A HK64781A (en) | 1974-01-14 | 1981-12-24 | Electrical current overload fuses |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US432980A US3909767A (en) | 1974-01-14 | 1974-01-14 | Miniature plug-in fuse |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US05/610,978 Division US3962782A (en) | 1974-01-14 | 1975-02-08 | Method of making a miniature plug-in fuse |
US05/693,936 Continuation-In-Part US4040175A (en) | 1974-01-14 | 1976-06-08 | Method of making a miniature plug-in fuse with fragile fuse link |
Publications (1)
Publication Number | Publication Date |
---|---|
US3909767A true US3909767A (en) | 1975-09-30 |
Family
ID=23718358
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US432980A Expired - Lifetime US3909767A (en) | 1974-01-14 | 1974-01-14 | Miniature plug-in fuse |
Country Status (6)
Country | Link |
---|---|
US (1) | US3909767A (en) |
JP (1) | JPS5436726B2 (en) |
CA (1) | CA1050592A (en) |
DE (4) | DE2500364C2 (en) |
GB (1) | GB1500183A (en) |
HK (1) | HK64781A (en) |
Cited By (63)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4067103A (en) * | 1977-02-07 | 1978-01-10 | Littelfuse, Inc. | Method of making a plug-in fuse |
US4099322A (en) * | 1977-02-07 | 1978-07-11 | Littelfuse, Inc. | Method for making plug-in fuse assemblies |
DE2828271A1 (en) * | 1977-07-07 | 1979-01-25 | Amp Inc | FUSE |
DE2912018A1 (en) * | 1978-04-03 | 1979-10-11 | Mc Graw Edison Co | MINIATURE PLUG FUSE AND METHOD FOR PRODUCING THE LATTER |
US4219793A (en) * | 1977-01-31 | 1980-08-26 | Pacific Engineering Co., Ltd. | Fuse with planar fuse element |
US4221455A (en) * | 1979-03-01 | 1980-09-09 | Ford Motor Company | Fuse terminal block with alternative means for connection to fuse blade contacts |
US4226493A (en) * | 1979-03-01 | 1980-10-07 | Ford Motor Company | Terminal block with fuse guards and identification surface |
US4258350A (en) * | 1978-03-30 | 1981-03-24 | Nissan Motor Company, Limited | Arrangement of plug-in type fuses on a mounting board |
US4344060A (en) * | 1980-09-19 | 1982-08-10 | Littelfuse, Inc. | Enclosed plug-in fuse assembly |
DE3138206A1 (en) * | 1981-09-25 | 1983-04-07 | Bayerische Motoren Werke AG, 8000 München | Electrical fuse link and a method for its production |
US4391485A (en) * | 1981-01-09 | 1983-07-05 | Mcgraw-Edison Company | In-line fuse holder for miniature plug-in fuse |
US4394638A (en) * | 1982-07-21 | 1983-07-19 | Essex Group, Inc. | Miniature plug-in fuse assembly and method of making a fuse element therefor |
US4409582A (en) * | 1982-06-02 | 1983-10-11 | Amp Incorporated | Electrical fuse and method of making same |
US4417225A (en) * | 1981-04-16 | 1983-11-22 | Grote & Hartmann Gmbh & Co. Kg | Flat fuse and process for production thereof |
DE3328295A1 (en) * | 1982-08-05 | 1984-02-09 | Kabushiki Kaisha T An T, Tokyo | COMPACT FUSE FUSE BLOCK ARRANGEMENT |
US4499447A (en) * | 1983-06-17 | 1985-02-12 | Guim Multi-Tech Corporation | Blade terminal fuses with integrity indicator |
WO1986004456A1 (en) * | 1985-01-18 | 1986-07-31 | Visual Fuse, Incorporated | Blade terminal fuses with integrity indicator |
EP0248493A2 (en) * | 1986-06-03 | 1987-12-09 | Littelfuse Tracor B.V. | Electrical fuse |
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US5324214A (en) * | 1993-03-05 | 1994-06-28 | No Jack Corporation | Blade type fuse block terminal adapter |
US5409402A (en) * | 1994-05-03 | 1995-04-25 | Ball; Roger M. | Plug-in fuse device with interchangeable fuse elements |
US5418515A (en) * | 1993-12-22 | 1995-05-23 | Reyes; Daniel | Fuse interruption indicator and integral extractor |
US5629664A (en) * | 1994-09-27 | 1997-05-13 | Yazaki Corporation | Blade fuse with bifurcated gripping pieces |
US5635769A (en) * | 1996-04-02 | 1997-06-03 | Magnadyne Corporation | Adaptable interface device for control of vehicle accessory systems using a plug-in resistor assembly |
US5847635A (en) * | 1995-10-20 | 1998-12-08 | Yazaki Corporation | Blade-type fuse element having a load portion |
USD408367S (en) * | 1996-10-11 | 1999-04-20 | Magnadyne Corporation | Fuse |
US6359543B2 (en) | 2000-05-16 | 2002-03-19 | Yazaki Corporation | Fuse |
US6407657B1 (en) | 2000-02-03 | 2002-06-18 | Littelfuse, Inc. | Dual use fuse |
US6452474B1 (en) | 1999-03-04 | 2002-09-17 | Littelfuse, Inc. | Barrier fuse |
US6545585B2 (en) * | 2000-04-06 | 2003-04-08 | Yazaki Corporation | Fuse |
US6608546B2 (en) * | 2000-03-03 | 2003-08-19 | Pacific Engineering Corp. | Fuse and fuse support |
US20030166352A1 (en) * | 2002-03-04 | 2003-09-04 | Seibang Oh | Multi-element fuse array |
US20040070485A1 (en) * | 2000-11-22 | 2004-04-15 | Hideki Andoh | Blade fuse |
US6815841B1 (en) | 1999-11-03 | 2004-11-09 | Littelfuse, Inc. | Fuse arrangements and fuse boxes for a vehicle |
US20050015953A1 (en) * | 2003-07-21 | 2005-01-27 | Yaron Keidar | Method for making a spiral array ultrasound transducer |
WO2005057601A1 (en) * | 2003-12-13 | 2005-06-23 | Wilhelm Pudenz Gmbh | One-piece fuse insert method for production of the one-piece fuse insert and device for carrying out said method |
US20050190519A1 (en) * | 2003-11-26 | 2005-09-01 | Brown William P. | Vehicle electrical protection device and system employing same |
US20050212647A1 (en) * | 2004-03-05 | 2005-09-29 | Goldsberry Timothy R | Low profile automotive fuse |
US20060055497A1 (en) * | 2004-09-15 | 2006-03-16 | Harris Edwin J | High voltage/high current fuse |
US20060066436A1 (en) * | 2004-09-24 | 2006-03-30 | Amphenol-Tuchel Electronics Gmbh | Fuse for high-current applications |
US20060173114A1 (en) * | 2001-04-19 | 2006-08-03 | Koji Fujimoto | Polyamide resin composition for fuse element and fuse element |
US20060268645A1 (en) * | 2005-05-27 | 2006-11-30 | Alfons Graf | Protection Circuit |
US20070080772A1 (en) * | 2003-12-13 | 2007-04-12 | Henning Schulte | Fuse insert having a flat insulating body |
US20080266044A1 (en) * | 2007-04-25 | 2008-10-30 | Sony Corporation | Fuse device with integrated switch |
US20080272877A1 (en) * | 2004-06-18 | 2008-11-06 | Alpi Co., Ltd | Fuse Device |
US20090045906A1 (en) * | 2007-08-13 | 2009-02-19 | Littelfuse, Inc. | Moderately hazardous environment fuse |
CN101488428A (en) * | 2008-01-14 | 2009-07-22 | 保险丝公司 | Blade fuse |
US20090251200A1 (en) * | 2008-04-02 | 2009-10-08 | Littlefuse, Inc. | Master fuse module |
US20100102920A1 (en) * | 2007-08-13 | 2010-04-29 | Littelfuse, Inc. | Moderately hazardous environment fuse |
US7983024B2 (en) | 2007-04-24 | 2011-07-19 | Littelfuse, Inc. | Fuse card system for automotive circuit protection |
US20130342305A1 (en) * | 2012-06-25 | 2013-12-26 | Jui-Chih Yen | Structure of positioning cover of miniature fuse device |
EP3213336A1 (en) * | 2014-10-30 | 2017-09-06 | LEONI Bordnetz-Systeme GmbH | Pyrotechnical circuit breaker |
US20190371558A1 (en) * | 2009-02-27 | 2019-12-05 | Littelfuse, Inc. | Tuning fork terminal slow blow fuse |
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DE2714797A1 (en) * | 1977-04-02 | 1979-02-22 | Kromberg & Schubert | Plug type fuse with insulating case - has plug bar on case holding two contact blades connected by fusible link visible for inspection |
DE2722008A1 (en) * | 1977-05-14 | 1978-11-16 | Kromberg & Schubert | Fused plug for protecting electrical circuit - has transparent window for observing or indicating condition of fusible element |
DE2729452C3 (en) * | 1977-06-30 | 1980-06-12 | Grote & Hartmann Gmbh & Co Kg, 5600 Wuppertal | Blade fuse |
JPS6226910Y2 (en) * | 1977-09-29 | 1987-07-10 | ||
JPS54133343U (en) * | 1978-03-09 | 1979-09-14 | ||
EP0041966A1 (en) * | 1979-12-03 | 1981-12-23 | Kenneth E Beswick Limited | Method of manufacturing plug-in electrical fuses and a fuse produced by the method |
DE2949432C2 (en) * | 1979-12-08 | 1986-08-07 | Georg Rudolf 8411 Zeitlarn Sillner | Plug-in fuse |
DE3920198A1 (en) * | 1989-06-21 | 1991-01-10 | Wickmann Werke Gmbh | Electric safety fuse with disparate conductors in series - has one conductor embedded in quenching material and another conductor with different rating in air space |
EP0625284A1 (en) * | 1991-01-16 | 1994-11-23 | Dav | Flat fuse for high rated currents |
FR2685543B1 (en) * | 1991-12-20 | 1994-03-11 | Dav | FLAT FUSE FOR HIGH NOMINAL CURRENTS. |
FR2671662B1 (en) * | 1991-01-16 | 1993-04-16 | Dav | FLAT FUSE FOR HIGH NOMINAL CURRENTS. |
JP2747877B2 (en) * | 1993-10-28 | 1998-05-06 | 矢崎総業株式会社 | Slow fuse and manufacturing method thereof |
JP2001283708A (en) * | 2000-03-31 | 2001-10-12 | Yazaki Corp | Fuse |
DE102007020989B4 (en) * | 2007-05-04 | 2013-10-10 | Autecto Industrievertretungen GmbH & Co. KG | Method for producing a fuse and fuse produced by the method |
JP6542589B2 (en) * | 2015-06-05 | 2019-07-10 | 矢崎総業株式会社 | Fuse soluble body |
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- 1975-01-07 DE DE7500226U patent/DE7500226U/en not_active Expired
- 1975-01-07 DE DE2560126A patent/DE2560126C2/en not_active Expired
- 1975-01-07 GB GB627/75A patent/GB1500183A/en not_active Expired
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- 1975-01-13 CA CA217,829A patent/CA1050592A/en not_active Expired
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Cited By (90)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4219793A (en) * | 1977-01-31 | 1980-08-26 | Pacific Engineering Co., Ltd. | Fuse with planar fuse element |
US4067103A (en) * | 1977-02-07 | 1978-01-10 | Littelfuse, Inc. | Method of making a plug-in fuse |
US4099322A (en) * | 1977-02-07 | 1978-07-11 | Littelfuse, Inc. | Method for making plug-in fuse assemblies |
DE2828271A1 (en) * | 1977-07-07 | 1979-01-25 | Amp Inc | FUSE |
US4258350A (en) * | 1978-03-30 | 1981-03-24 | Nissan Motor Company, Limited | Arrangement of plug-in type fuses on a mounting board |
DE2912018A1 (en) * | 1978-04-03 | 1979-10-11 | Mc Graw Edison Co | MINIATURE PLUG FUSE AND METHOD FOR PRODUCING THE LATTER |
US4221455A (en) * | 1979-03-01 | 1980-09-09 | Ford Motor Company | Fuse terminal block with alternative means for connection to fuse blade contacts |
US4226493A (en) * | 1979-03-01 | 1980-10-07 | Ford Motor Company | Terminal block with fuse guards and identification surface |
US4344060A (en) * | 1980-09-19 | 1982-08-10 | Littelfuse, Inc. | Enclosed plug-in fuse assembly |
US4391485A (en) * | 1981-01-09 | 1983-07-05 | Mcgraw-Edison Company | In-line fuse holder for miniature plug-in fuse |
US4417225A (en) * | 1981-04-16 | 1983-11-22 | Grote & Hartmann Gmbh & Co. Kg | Flat fuse and process for production thereof |
DE3138206A1 (en) * | 1981-09-25 | 1983-04-07 | Bayerische Motoren Werke AG, 8000 München | Electrical fuse link and a method for its production |
US4409582A (en) * | 1982-06-02 | 1983-10-11 | Amp Incorporated | Electrical fuse and method of making same |
US4394638A (en) * | 1982-07-21 | 1983-07-19 | Essex Group, Inc. | Miniature plug-in fuse assembly and method of making a fuse element therefor |
DE3328295A1 (en) * | 1982-08-05 | 1984-02-09 | Kabushiki Kaisha T An T, Tokyo | COMPACT FUSE FUSE BLOCK ARRANGEMENT |
US4544907A (en) * | 1982-08-05 | 1985-10-01 | Kabushiki Kaisha T An T | Compact fuse block assembly |
US4499447A (en) * | 1983-06-17 | 1985-02-12 | Guim Multi-Tech Corporation | Blade terminal fuses with integrity indicator |
WO1986004456A1 (en) * | 1985-01-18 | 1986-07-31 | Visual Fuse, Incorporated | Blade terminal fuses with integrity indicator |
US4751490A (en) * | 1986-04-18 | 1988-06-14 | Yazaki Corporation | Fuse terminal |
EP0248493A3 (en) * | 1986-06-03 | 1989-12-13 | Littelfuse Tracor B.V. | Electrical fuse |
EP0248493A2 (en) * | 1986-06-03 | 1987-12-09 | Littelfuse Tracor B.V. | Electrical fuse |
AU571381B2 (en) * | 1986-06-03 | 1988-04-14 | Littelfuse, Inc. | Electrical fuse |
US4800358A (en) * | 1986-11-19 | 1989-01-24 | Yazaki Corporation | Fuse |
US4780698A (en) * | 1987-04-30 | 1988-10-25 | Texas Instruments Incorporated | Circuit interrupter device and method for making |
US4802869A (en) * | 1987-08-17 | 1989-02-07 | United Technologies Automotive, Inc. | Probeable electrical connector |
DE3900407A1 (en) * | 1988-01-19 | 1989-07-27 | Gen Motors Corp | FUSE BOX |
US4836802A (en) * | 1988-06-30 | 1989-06-06 | Brunswick Corporation | Sealed fuse holder |
US4884050A (en) * | 1988-07-18 | 1989-11-28 | Kozel Emmett L | Blade terminal tap fuse |
US4998086A (en) * | 1988-08-09 | 1991-03-05 | Amp Incorporated | Fuse assembly and method of manufacture |
US4944691A (en) * | 1988-08-15 | 1990-07-31 | Cooper Industries, Inc. | Holder for a removable circuit element |
US4986767A (en) * | 1990-04-23 | 1991-01-22 | Kozel Emmett L | Blade fuse power tap |
US5227759A (en) * | 1991-06-25 | 1993-07-13 | Yazaki Corporation | Plug-in fuse |
US5324214A (en) * | 1993-03-05 | 1994-06-28 | No Jack Corporation | Blade type fuse block terminal adapter |
US5418515A (en) * | 1993-12-22 | 1995-05-23 | Reyes; Daniel | Fuse interruption indicator and integral extractor |
US5409402A (en) * | 1994-05-03 | 1995-04-25 | Ball; Roger M. | Plug-in fuse device with interchangeable fuse elements |
US5629664A (en) * | 1994-09-27 | 1997-05-13 | Yazaki Corporation | Blade fuse with bifurcated gripping pieces |
US5847635A (en) * | 1995-10-20 | 1998-12-08 | Yazaki Corporation | Blade-type fuse element having a load portion |
US5635769A (en) * | 1996-04-02 | 1997-06-03 | Magnadyne Corporation | Adaptable interface device for control of vehicle accessory systems using a plug-in resistor assembly |
USD408367S (en) * | 1996-10-11 | 1999-04-20 | Magnadyne Corporation | Fuse |
US6452474B1 (en) | 1999-03-04 | 2002-09-17 | Littelfuse, Inc. | Barrier fuse |
US6642834B1 (en) | 1999-03-04 | 2003-11-04 | Littelfuse, Inc. | High voltage automotive use |
US6815841B1 (en) | 1999-11-03 | 2004-11-09 | Littelfuse, Inc. | Fuse arrangements and fuse boxes for a vehicle |
US6407657B1 (en) | 2000-02-03 | 2002-06-18 | Littelfuse, Inc. | Dual use fuse |
US6608546B2 (en) * | 2000-03-03 | 2003-08-19 | Pacific Engineering Corp. | Fuse and fuse support |
US6545585B2 (en) * | 2000-04-06 | 2003-04-08 | Yazaki Corporation | Fuse |
US6556120B2 (en) | 2000-05-16 | 2003-04-29 | Yazaki Corporation | Fuse |
US6753753B2 (en) | 2000-05-16 | 2004-06-22 | Yazaki Corporation | Fuse |
US6359543B2 (en) | 2000-05-16 | 2002-03-19 | Yazaki Corporation | Fuse |
US6967560B2 (en) * | 2000-11-22 | 2005-11-22 | Pacific Engineering Corp. | Blade fuse |
US20040070485A1 (en) * | 2000-11-22 | 2004-04-15 | Hideki Andoh | Blade fuse |
US20060173114A1 (en) * | 2001-04-19 | 2006-08-03 | Koji Fujimoto | Polyamide resin composition for fuse element and fuse element |
US6878004B2 (en) | 2002-03-04 | 2005-04-12 | Littelfuse, Inc. | Multi-element fuse array |
US20030166352A1 (en) * | 2002-03-04 | 2003-09-04 | Seibang Oh | Multi-element fuse array |
US20050015953A1 (en) * | 2003-07-21 | 2005-01-27 | Yaron Keidar | Method for making a spiral array ultrasound transducer |
US20050190519A1 (en) * | 2003-11-26 | 2005-09-01 | Brown William P. | Vehicle electrical protection device and system employing same |
US7233474B2 (en) | 2003-11-26 | 2007-06-19 | Littelfuse, Inc. | Vehicle electrical protection device and system employing same |
WO2005057601A1 (en) * | 2003-12-13 | 2005-06-23 | Wilhelm Pudenz Gmbh | One-piece fuse insert method for production of the one-piece fuse insert and device for carrying out said method |
US20070080772A1 (en) * | 2003-12-13 | 2007-04-12 | Henning Schulte | Fuse insert having a flat insulating body |
US20070126547A1 (en) * | 2003-12-13 | 2007-06-07 | Henning Schulte | One-piece fuse insert, method for producing the one-piece fuse insert, and device for implementing the method |
US7515030B2 (en) * | 2003-12-13 | 2009-04-07 | Littelfuse Automotive Gmbh | Fuse insert having a flat insulating body |
US20050212647A1 (en) * | 2004-03-05 | 2005-09-29 | Goldsberry Timothy R | Low profile automotive fuse |
US7479866B2 (en) | 2004-03-05 | 2009-01-20 | Littelfuse, Inc. | Low profile automotive fuse |
US20080272877A1 (en) * | 2004-06-18 | 2008-11-06 | Alpi Co., Ltd | Fuse Device |
US20060055497A1 (en) * | 2004-09-15 | 2006-03-16 | Harris Edwin J | High voltage/high current fuse |
US7659804B2 (en) | 2004-09-15 | 2010-02-09 | Littelfuse, Inc. | High voltage/high current fuse |
US20060066436A1 (en) * | 2004-09-24 | 2006-03-30 | Amphenol-Tuchel Electronics Gmbh | Fuse for high-current applications |
US20060268645A1 (en) * | 2005-05-27 | 2006-11-30 | Alfons Graf | Protection Circuit |
US7508295B2 (en) * | 2005-05-27 | 2009-03-24 | Infineon Technologies Ag | Protection circuit |
US7983024B2 (en) | 2007-04-24 | 2011-07-19 | Littelfuse, Inc. | Fuse card system for automotive circuit protection |
US7965168B2 (en) | 2007-04-25 | 2011-06-21 | Sony Corporation | Fuse device with integrated switch |
US7639112B2 (en) | 2007-04-25 | 2009-12-29 | Sony Corporation | Fuse device with integrated switch |
US20080266044A1 (en) * | 2007-04-25 | 2008-10-30 | Sony Corporation | Fuse device with integrated switch |
US20100060405A1 (en) * | 2007-04-25 | 2010-03-11 | Sony Corporation | Fuse device with integrated switch |
US20090045906A1 (en) * | 2007-08-13 | 2009-02-19 | Littelfuse, Inc. | Moderately hazardous environment fuse |
US20100102920A1 (en) * | 2007-08-13 | 2010-04-29 | Littelfuse, Inc. | Moderately hazardous environment fuse |
US7808362B2 (en) | 2007-08-13 | 2010-10-05 | Littlefuse, Inc. | Moderately hazardous environment fuse |
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US8976000B2 (en) | 2008-01-14 | 2015-03-10 | Littelfuse, Inc. | Blade fuse |
US7928827B2 (en) | 2008-01-14 | 2011-04-19 | Littelfuse, Inc. | Blade fuse |
US8077007B2 (en) | 2008-01-14 | 2011-12-13 | Littlelfuse, Inc. | Blade fuse |
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US20090251200A1 (en) * | 2008-04-02 | 2009-10-08 | Littlefuse, Inc. | Master fuse module |
US7990738B2 (en) | 2008-04-02 | 2011-08-02 | Littelfuse, Inc. | Master fuse module |
US20190371558A1 (en) * | 2009-02-27 | 2019-12-05 | Littelfuse, Inc. | Tuning fork terminal slow blow fuse |
US10600601B2 (en) * | 2009-02-27 | 2020-03-24 | Littelfuse, Inc. | Tuning fork terminal slow blow fuse |
US20130342305A1 (en) * | 2012-06-25 | 2013-12-26 | Jui-Chih Yen | Structure of positioning cover of miniature fuse device |
EP3213336B1 (en) * | 2014-10-30 | 2022-03-02 | LEONI Bordnetz-Systeme GmbH | Pyrotechnical circuit breaker |
EP3213336A1 (en) * | 2014-10-30 | 2017-09-06 | LEONI Bordnetz-Systeme GmbH | Pyrotechnical circuit breaker |
Also Published As
Publication number | Publication date |
---|---|
HK64781A (en) | 1981-12-31 |
DE2500364A1 (en) | 1975-07-17 |
JPS5436726B2 (en) | 1979-11-10 |
GB1500183A (en) | 1978-02-08 |
CA1050592A (en) | 1979-03-13 |
DE2500364C2 (en) | 1984-01-26 |
DE7500226U (en) | 1977-10-27 |
JPS50101845A (en) | 1975-08-12 |
DE2560553C2 (en) | 1988-01-07 |
DE2560126C2 (en) | 1984-12-20 |
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