Patent Description:
Fuse bodies for different applications are commonly configured such that a fusible element is enclosed in a fuse body during assembly and is not visible for inspection of connection points to an electrical conductor. If the fusible link is not properly connected to the electrical conductor, the fuse may be damaged or inoperable, which may lead to failure during an electrical event and damage to sensitive electrical components. Additionally, fuses may include several separate components requiring welding or soldering for assembly, thereby complicating and increasing the cost for assembly/disassembly of the fuse, as well as introducing additional potential failure points of the fuse.

<CIT> refers in its abstract to a fusible link component with a fusible conductor, the fusible conductor being located within an insulation body and the fusible conductor extending between the two end faces of the insulation body, the end faces of the insulation body are each closed with electrically conductive end caps and the end caps are in electrical contact with the fusible conductor, characterized in that the insulating body at least in the area of the end caps consists of at least two shells is assembled and the shells in the assembled state form a channel receiving the fusible conductor.

<CIT> refers in its abstract to a fuse for improving the reliability and facilitating automation the process and, in this fuse, an inner cap is provided between a glass tube and a cap terminal; a passage for ventilating the inside of the glass tube is provided between the inner cap and the glass tube; an end portion of the fuse element is taken out between the cap terminal and the inner cap through an element insertion hole formed on a bottom plate of the inner cap in order to electrically connect the end portion with at least the cap terminal; and the cap terminal is fixed to the inner cap.

<CIT> refers in its abstract to a 'method for producing a miniature fuse and a miniature fuse itself. Known housings with three chambers and a separate cover are difficult to manufacture and are susceptible because of their complicated shape. According to the invention, an internally smooth-surfaced, externally cylindrical housing is preferably formed from identical tube halves, the end faces of which are closed either by appropriately designed connection electrodes or by co-molded end walls, the electrodes always carrying the fusible conductor on their inside and the connecting wires on their outside. In this case, an intermediate carrier is preferably used which comprises the electrodes and the fusible conductor attached to them. In any case, the production is simplified. In addition, there is no longer any need to provide shrink tubing to isolate contact caps.

<CIT> refers to in its abstract 'Subminiature surface mount chip fuses include two part housings enclosing a fuse element and prefabricated end caps. The housing ends are shaped to restrict freedom of movement of the fuse element ends as the end caps are assembled to the housing. The end caps may include features to positively secure them in place and restrict relative movement of the end caps relative to the housing. Holes may be provided in the end caps that allow solder flow from a location exterior to the end caps to flow interior to the end caps to establish electrical connection with the fuse element.

According to an embodiment of the present invention,.

In various and foregoing embodiments of the present disclosure, a first outer termination may be positioned over the first inner termination at the first end of the fuse body. A second outer termination may be positioned over the second inner termination at the second end of the fuse body. The first outer termination, the second outer termination, the first inner termination, or the second inner termination, or combinations thereof, may be formed as a cap, a clip, or a metallization, or combinations thereof. A contour of the cavity may be narrower at the first and second ends of the fuse body, and wider in a central portion of the fuse body. The first and second inner terminations may be formed to mate with the respective first and second ends of the fuse body. The first and second ends of the fuse body may have a conical curvature extending into the cavity of the fuse body, and the inner terminations may have respective mating conical curvatures, such that the fusible element may be insertable and centered in the cavity. The first and second inner terminations may be crimped onto the respective first and second ends of the fuse body via grooves. The first and second outer terminations may be crimped onto the respective first and second ends of the fuse body, or the respective first and second inner terminations, or both. The fusible element may be attachable to the respective first and second inner terminations by solder, weld, epoxy, or combinations thereof. The fusible element may be attachable by winding around an outer circumference of the respective first and second inner terminations.

According to an exemplary embodiment of the present disclosure not encompassed by the wording of the claims, a fuse may include a fuse body including an elongated body having a first end and a second end. The first end and the second end may each have one or more slots. A fusible element may be extendable from the one or more slots of the first end of the fuse body to the one or more slots of the second end of the fuse body. A cover may be included to at least partially enclose the fuse body and the fusible element. The cover may have one or more lockable features to at least partially retain the fuse body, the fusible element, or both.

In various of the foregoing and other embodiments of the present disclosure not encompassed by the wording of the claims, a first electrical conductor may be disposed at the first end of the fuse body. A second electrical conductor may be disposed at the second end of the fuse body, and the fusible element may be attachable to the first electrical conductor and extendable along the elongated body of the fuse body and attachable to the second electrical conductor. The fuse body may be formed of an electrically conductive material such that the fusible element may be directly connectable to the fuse body. A first slot may be disposed on a top surface of the first end of the fuse body, and a second slot may be disposed on a top surface of the second end of the fuse body, such that the fusible element may be centered along the fuse body. At least a portion of a first electrical conductor may be positioned in the first slot and at least a portion of a second electrical conductor is positioned in the second slot, and the fusible element may be attachable to the first electrical conductor in the first slot and the second electrical conductor in the second slot. The first slot may be disposed on a first side surface of the first end of the fuse body, and a second slot may be disposed on a first side surface of the second end of the fuse body. At least a portion of a first electrical conductor may be positioned in the first slot and at least a portion of a second electrical conductor is positioned in the second slot, and the fusible element may be attachable to the first electrical conductor in the first slot and the second electrical conductor in the second slot. A third slot may be disposed on a second side surface opposite the first slot on the first side surface of the first end of the fuse body, and a fourth slot may be disposed on a second surface opposite the first slot of the first side surface of the second end of the fuse body. The first side surface of the first end of the fuse body may be opposite of the first side surface of the second end of the fuse body, such that the fusible element may be diagonally extendable along the elongated body of the fuse body. The fusible element may be attachable to the fuse body, the first electrical conductor, the second electrical conductor, or combinations thereof, by solder, weld, epoxy, winding, forming, or combinations thereof.

By way of example, specific embodiments of the disclosed device will now be described, with reference to the accompanying drawings, in which:.

A fuse in accordance with the present disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which certain exemplary embodiments of the fuse are presented. The fuse may be embodied in many different forms and is not to be construed as being limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the fuse to those skilled in the art. In the drawings, like numbers refer to like elements throughout unless otherwise noted.

<FIG> and 2A-2B illustrate exemplary embodiments of a fuse in accordance with the present invention. Exemplary embodiments of the fuse in the present disclosure may include a cartridge fuse and/or a surface mount fuse. A fuse <NUM>, <NUM>' may include a fuse body <NUM>, <NUM>'. The fuse body <NUM>, <NUM>' may be formed of a single piece (see <FIG>), although in some embodiments the fuse body <NUM>, <NUM>' may be formed of more than one component, e.g., a split body. As shown in <FIG> and 2A-2B, the fuse body <NUM>, <NUM>' may include a first portion <NUM>, <NUM>' and a second portion <NUM>, <NUM>'. The fuse body <NUM>, <NUM> may be an elongated body, and may have a first end 105a, 105a', a central portion 105c, 105c' and a second end 105b, 105b'. Similarly, the first portion <NUM>, <NUM>' may be an elongated body and may have a first end 110a, 110a', a central portion 110c, 110c', and a second end 110b, 110b', and the second portion <NUM>, <NUM>' may be an elongated body and may have a first end 115a, 115a', a central portion 115c, 115c', and a second end 115b, 115b'. In embodiments, the first and second portions <NUM>, <NUM>', <NUM>, <NUM>' may be symmetrical to define a single fuse body when assembled. For example, the respective first ends 110a, 110a', 115a, 115a' may be aligned to each other, and the respective second ends 110b, 110b', 115b, 115b' may be aligned to each other. As shown in <FIG>, the fuse body <NUM> may be formed in a substantially rectangular shape, and <FIG> illustrates the fuse body <NUM>' being formed in a substantially cylindrical shape, although the fuse body may be configured in any shape in accordance with the present disclosure. It is understood that discussion of the fuse body <NUM>, <NUM>' throughout may also include each of the first and second portions <NUM>, <NUM>', <NUM>, <NUM>' (e.g., reference to a first end of the fuse body 105a, 105a' may include a first end of the first portion 110a, 110a' and a first end of the second portion1 115a, 115a', etc.).

The fuse body <NUM> may be formed of a non-conductive material, such as ceramic or a plastic or composite material. In some embodiments not encompassed by the wording of the claims, as described below with respect to <FIG>, <FIG> at least a portion of the fuse body may be formed of a conductive material, such that the fuse may not require a separate electrical conductor.

The fuse body <NUM>, <NUM>' has an internal cavity <NUM>, <NUM>'. In some embodiments, the cavity <NUM>, <NUM>' is at least partially formed in each of the first and second portions <NUM>, <NUM>' <NUM>, <NUM>' although it is understood that the cavity <NUM>, <NUM>' may be wholly disposed in either of the first or second portions <NUM>, <NUM>', <NUM>, <NUM>' of the fuse body <NUM>, <NUM>'. The cavity <NUM>, <NUM>' extends from the first end 105a, 105a', through the fuse body and to the second end 105b, 105b', and may be any shape formed in the fuse body <NUM>, <NUM>'. In embodiments, the cavity <NUM>, <NUM>' may have a contour such that at least a portion of the cavity at the first end 105a, 105a' and/or the second end 105b, 105b' may be narrower than the cavity at the central portion 105c, 105c'. In some embodiments, the cavity <NUM>, <NUM>' is configured to receive a fusible element <NUM>, <NUM>', such that having a narrower cavity portion at the first and/or second ends of the fuse body 105a, 105a', 105b, 105b' may be advantageous for alignment of the fusible element <NUM>, <NUM>' during assembly.

The fusible element <NUM>, <NUM>' is positioned in the cavity <NUM>, <NUM>' such that the fusible element <NUM>, <NUM>' is centered relative to the fuse body <NUM>, <NUM>'. In some embodiments, the fusible element <NUM>, <NUM>' does not contact the fuse body <NUM>, <NUM>', e.g., the fusible element <NUM>, <NUM>' is surrounded by air. In some embodiments, a filler may be included to fill the cavity <NUM>, <NUM>', such as silica, sand, or other arc-quenching material.

The fusible element <NUM>, <NUM>' may be a wire, a stamped element, or other conductive component, may be formed straight, or include one or more curvatures, and may be extendable in the cavity <NUM>, <NUM>' of the fuse body <NUM>, <NUM>' and attachable at a first end 125a, 125a' and a second end 125b, 125b'. The fusible element <NUM>, <NUM>' may be attachable to a first electrical conductor <NUM>, <NUM>' to form a first connection, and a second electrical conductor <NUM>, <NUM>' to form a second connection. In some embodiments, the fusible element <NUM>, <NUM>' may be attachable to the first and second electrical conductors <NUM>, <NUM>', <NUM>, <NUM>' by weld, solder, epoxy, or combinations thereof. The fusible element <NUM>, <NUM>' may be inserted and/or attached to the first and second electrical conductors <NUM>, <NUM>', <NUM>, <NUM>' after the electrical conductors have been attached to the fuse body <NUM>, <NUM>'. In some embodiments, the solder or weld may be lead (Pb) free. In some embodiments, the fusible element <NUM>, <NUM>' may be attachable to the first and second electrical conductors <NUM>, <NUM>', <NUM>, <NUM>' by winding, or wrapping, a respective end 125a, 125a', 125b, 125b' of the fusible element around the respective first and second electrical conductor <NUM>, <NUM>', <NUM>, <NUM>'.

The first and second electrical conductors <NUM>, <NUM>' <NUM>, <NUM>' may be formed as a termination, or an inner cap, e.g., extending over and at least partially enclosing a first end 105a, 105a' of the fuse body and a second end 105b, 105b' of the fuse body. The electrical conductors may be referred to as termination and/or inner caps interchangeably, and may be a cap, clips, or metallization, or combinations thereof. In embodiments having a first portion <NUM>, <NUM>' and a second portion <NUM>, <NUM>' of the fuse body <NUM>, the inner cap <NUM>, <NUM>', <NUM>, <NUM>' may clamp, or retain, the respective portions <NUM>, <NUM>', <NUM>, <NUM>' in alignment thereby defining the fuse body <NUM>, <NUM>'. In this manner, the fuse body may be formed without solder, e.g., a solderless, fuse body.

In embodiments, the first and second inner caps <NUM>, <NUM>', <NUM>, <NUM>' may be formed to mate with the respective first and second ends of the fuse body 105a, 105a', 105b, 105b'. For example, the first and second inner caps <NUM>, <NUM>' <NUM>, <NUM>' may have a conical curvature <NUM>, <NUM>' extending inwardly into the respective cap. The conical curvature <NUM>, <NUM>' may be configured to mate with the respective first end and second end of the fuse body 105a, 105a', 105b, 105b'. For example, the first end 105a, 105a' (e.g., the first ends 110a, 115a, 110a', 115a') may have a matching conical curvature <NUM>, <NUM>', and the second end 105b, 105b' (e.g., the second ends 110b, 115b, 110b', 115b') may have a matching conical curvature <NUM>, <NUM>' such that the inner caps may substantially fit over the respective ends of the fuse body, e.g., as indicated by direction arrows "A". The conical curvature <NUM>, <NUM>', <NUM>, <NUM>' may also extend inwardly towards the central portion 105c of the fuse body.

The conical curvature <NUM>, <NUM>', <NUM>, <NUM>' may transition into the cavity <NUM>, <NUM>'. As described above, the narrower portions of the cavity <NUM>, <NUM>' may extend at least partially to the conical curvature <NUM>, <NUM>', <NUM>, <NUM>'. In some embodiments, the conical curvature <NUM>, <NUM>' of the inner caps <NUM>, <NUM>', <NUM>, <NUM>' and/or the conical curvature of the fuse body <NUM>, <NUM>', <NUM>, <NUM>' are formed in a trumpet bell shape. In some embodiments, the conical curvature <NUM>, <NUM>' of the inner caps <NUM>, <NUM>', <NUM>, <NUM>' and/or the conical curvature of the fuse body <NUM>, <NUM>', <NUM>, <NUM>' may aid in alignment of the fusible element <NUM>, <NUM>', such that the fusible element <NUM>, <NUM>' is centered in the fuse body <NUM>, <NUM>'.

In some embodiments, the inner cap <NUM>, <NUM>', <NUM>, <NUM>' may be crimped onto the respective end 105a, 105a', 105b, 105b' of the fuse body. The inner cap <NUM>, <NUM>', <NUM>, <NUM>' may have a pre-formed groove <NUM>, <NUM>' extending around an outer circumference <NUM>, <NUM>'. Similarly, a first groove <NUM>, <NUM>' may be pre-formed on an outer circumference <NUM>, <NUM>' at the first end 105a, 105a' of the fuse body, and a second groove <NUM>, <NUM>' may be pre-formed on the outer circumference <NUM>, <NUM>' at the second end 105b, 105b' of the fuse body. In some embodiments, the grooves may not be pre-formed, but may be created when the inner cap is attached, e.g., crimped to the fuse body. As shown in <FIG>, the groove <NUM>, <NUM>' may be configured to lock into the respective first and second grooves <NUM>, <NUM>', <NUM>, <NUM>', thereby clamping, or retaining the fuse body <NUM>, <NUM>' by the inner caps <NUM>, <NUM>', <NUM>, <NUM>'. In some embodiments, the grooves <NUM>, <NUM>', <NUM>, <NUM>', <NUM>, <NUM>' may be formed after assembling the inner caps onto the fuse body, e.g., the inner caps and the fuse body may be crimped together to form the respective grooves.

The inner cap <NUM>, <NUM>', <NUM>, <NUM>' may be shaped to conform to the shape of the fuse body. For example, as shown in <FIG>, the inner cap <NUM>, <NUM> may be rectangular or square in shape to mate with the rectangular fuse body <NUM>. As shown in <FIG>, the inner cap <NUM>', <NUM>' may be circular or cylindrical in shape to mate with the cylindrical fuse body <NUM>'.

The electrical conductors <NUM>, <NUM>', <NUM>, <NUM>' (e.g., formed as inner caps) may be formed of an electrically conductive material, such as a metal, including but not limited to brass, copper, copper alloy, gold, silver, or tin, or alloys thereof. In some embodiments, the material may be plated with an electrically conductive material.

As described above, the fusible element <NUM>, <NUM>' may be attached at a first connection to the first inner cap <NUM>, <NUM>' and attached at a second connection to the second inner cap <NUM>, <NUM>'. The conical curvature <NUM>, <NUM>' of the first and second inner caps <NUM>, <NUM>', <NUM>, <NUM>' may aid in alignment of the fusible element <NUM>, <NUM>' for attachment. Additionally, the conical curvature <NUM>, <NUM>' may allow a visual confirmation of the first connection and the second connection. For example, in embodiments where the fusible element is welded, or soldered, to the inner caps <NUM>, <NUM>', <NUM>, <NUM>', it may be advantageous to inspect the joint quality. As described above, previous fuse configurations may not allow for a weld to be inspected, such that the fuse may be damaged or inoperable. The fuse body <NUM>, <NUM>' and the inner cap <NUM>, <NUM>', <NUM>, <NUM>' may be configured such that the first connection and the second connection may be inspectable without removal of the inner cap from the fuse body. In this manner, the first and second portions may remain in alignment and retained by the inner caps.

In some embodiments, a first termination, or outer cap <NUM>, <NUM>' may be positioned over at least a portion of the first inner cap <NUM>, <NUM>', and/or the first end 105a, 105a' of the fuse body. A second outer termination, or cap <NUM>, <NUM>' may be positioned over at least a portion of the second inner cap <NUM>, <NUM>', and/or the second end 105b, 105b' of the fuse body. The first and/or second outer terminations may be formed as caps, clips, or metallization, or combinations thereof. In some embodiments, the first and second outer caps <NUM>, <NUM>', <NUM>, <NUM>' may be a press fit, or interference fit, over the respective inner cap <NUM>, <NUM>', <NUM>, <NUM>'. The outer caps may be fixed over the respective inner caps, so that the outer caps may not be removed after assembly. The outer cap <NUM>, <NUM>', <NUM>, <NUM>' may be formed in a shape to conform with the inner cap <NUM>, <NUM>', <NUM>, <NUM>' and/or the fuse body <NUM>, <NUM>'. As shown in <FIG>, the first and second outer cap <NUM>, <NUM> may be substantially rectangular or square to mate with the inner cap <NUM>, <NUM> and/or the fuse body <NUM>. As shown in <FIG>, the first and second outer cap <NUM>, <NUM> may be substantially cylindrical or circular to mate with the inner cap <NUM>', <NUM>' and/or the fuse body <NUM>'.

Referring now to <FIG>, additional embodiments, not encompassed by the wording of the claims, of a fuse body <NUM>, <NUM>', <NUM>" are shown. As described above, the fuse body may be configured as a solderless design, such that no additional solder is needed to configure a fuse, e.g., fuse <NUM>, <NUM>' of <FIG>. The fuse body may have a first end 310a, 310a', 310a", and a second end 310b, 310b', 310b", and a central portion 310c, 310c', 310c" disposed therebetween. The central portion 310c, 310c', 310c" may be formed as a plate, although any configuration is envisioned to form a fuse body in a desired shape. As described above, the fuse body <NUM>, <NUM>', <NUM>" may be integrally formed, or assembled to form, a single piece, and may be formed of a non-conductive material such as ceramic, plastic or composite or combinations thereof. In some embodiments, the fuse body <NUM>, <NUM>', <NUM>" may be at least partially formed of a conductive material. For example, as shown in <FIG>, an electrical conductor <NUM>, <NUM> formed as conductive plates may be disposed along an edge of the fuse body <NUM>. The fuse body <NUM>, <NUM>', <NUM>" may be substantially rectangular, but it is also envisioned that the fuse body may be any shape as desired for connection with other electrical components.

In embodiments, not encompassed by the wording of the claims, the first and second ends of the fuse body 310a, 310b, 310a', 310b', 310a", 310b" may include one or more slots, or notches. As shown in <FIG>, a first slot 320a may be disposed in a first edge 315a of the first end of the fuse body, and a second slot 320b may be disposed in a second edge 315b of the second end of the fuse body. The first and second edges 315a, 315b may be a top surface of the respective first and second ends of the fuse body, and the first and second slots 320a, 320b may be a depression, or a recessed area, on at least a portion of the first and second edges 315a, 315b, at any depth into the first and second edges 315a, 315b, e.g., to receive at least a portion of an electrical conductor (see <FIG>). The first and second slots 320a, 320b may be formed in the respective first and second edges 315a, 315b transversely, e.g., substantially perpendicular to a length of the edge, and/or longitudinally, e.g., along a length of the edge. In some embodiments, the first and second slots 320a, 320b may extend around the respective ends 310a, 310b so that each face has a depression, or recessed area.

In some embodiments, not encompassed by the wording of the claims, slots or notches may be disposed on side faces of the fuse body. As shown in <FIG>, a slot 320a' may be disposed on a side face 325a of a first end 310a'. In some embodiments, the slot 320a' may be disposed on opposite side face 325b of the first end 310a'. It is also understood that slots may be disposed on both side faces 325a, 325b of the first end 310a'. Similarly, a slot 320b' may be disposed on a side face 330a of a second end 310b', on opposite side face 330b of the second end 310b', or both. The first and second slots 320a', 320b' may be formed in the respective side faces 325a, 325b, 330a, 330b transversely, e.g., substantially perpendicular to a length of the fuse body, and/or longitudinally, e.g., substantially parallel to length of the fuse body. The slots 320a', 320b' may be formed at any position on the side faces 325a, 325b, 330a, 330b, e.g., towards edges 315a', 315b', or the top surfaces of the first and second ends 310a', 310b', and/or towards a bottom face of the first and second ends 310a', 310b'. The slots 320a', 320b' may be at least partially formed as a recess, or depression, into the side faces 325a, 325b, 330a, 330b, and may be any depth to receive at least a portion of an electrical conductor (see <FIG>).

As shown in <FIG>, slots may be formed into each side face of each end of the fuse body. A first end 310a" may have a first slot 335a formed into a first side face 325a", and a second slot 335b formed into a second side face 325b". A second end 310b" may have a first slot 340a formed into a first side face 330a" and a second slot 340b formed into a second side face 330b". Although four slots are shown as being formed as recessions, or depressions, into the side faces, additional or fewer slots are also envisioned. The slots 335a, 335b, 340a, 340b may be formed as notches, such that the first end 310a" and the second end 310b" are T-slots. It is also envisioned that the slots 335a, 335b, 340a, 340b may at least be partially formed as a recess, or depression, into the side faces 325a", 325b", 330a", 330b", and may be any depth to receive at least a portion of an electrical conductor (see <FIG>).

It is envisioned that the slots 320a, 320b, 320a', 320b', 335a, 335b, 340a, 340b may be formed into the fuse body as guides for an electrical conductor, such that the electrical conductor is properly aligned for connection with a fusible element. Additionally, the slots may be positioned on the fuse body such that connections between a fusible element and an electrical conductor may be visible for inspection.

At least a portion of an electrical conductor may be disposed in the slots 320a, 320b, 320a', 320b', 335a, 335b, 340a, 340b of the respective fuse body <NUM>, <NUM>', <NUM>". In some embodiments, an electrical conductor <NUM>, <NUM> may be formed as clip, e.g., a C-clip, and may be attachable to the fuse body. In some embodiments, an electrical conductor <NUM>, <NUM> may be formed as a coating, e.g., a metallization, of a portion of the fuse body. As shown in <FIG>, an electrical conductor <NUM>, <NUM> may include a first top portion 345a, 350a, a second side portion 345b, 350b, and a third bottom portion 345c, 350c, formed as a "C" or "U" shape.

Referring now to <FIG>, a first electrical conductor <NUM> may be positioned with respect to a first end 310a, and a second electrical conductor <NUM> may be positioned with respect to a second end 310b. In some embodiments, not encompassed by the wording of the claims, the first electrical conductor <NUM> may be attached to the first end 310a of the fuse body such that the first, or top, portion 345a is disposed in the first slot 320a. The second, or side, portion 345b may be in alignment (e.g., substantially parallel) with an outward face <NUM> of the first end 310a. The third, or bottom, portion 345c may be in alignment (e.g., substantially parallel) with a bottom face <NUM> of the first end 310a. Similarly, the second electrical conductor <NUM> may be attached to the second end 310b of the fuse body such that the first portion 350a is disposed in the second slot 320b. The second portion 350b may be in alignment (e.g., substantially parallel) with an outward face <NUM> of the second end 310b. The third portion 350c maybe in alignment (e.g., substantially parallel) with a bottom face <NUM> of the second end 310b. In embodiments, the second portion 350b may be formed to fit within the slot 320a, 320b (see <FIG>), e.g., a width of the first portion 345a and the second portion 345b may be substantially the same. In other embodiments, the second portion 350b may substantially extend over and/or cover the respective first and/or second end 310a, 310b (see <FIG>), so that a width of the second portion 350b may be greater than a width of the first portion 350b.

The first and second electrical conductors <NUM>, <NUM> may be in electrical connection by a fusible element <NUM>. In some embodiments, the fusible element <NUM> may be attachable to the first electrical conductor <NUM> at a first end 375a to form a first connection and a second electrical conductor <NUM> at a second end 375b to form a second connection. The fusible element may be attachable to the first and second electrical conductors <NUM>, <NUM> by weld, solder, epoxy, or combinations thereof. In some embodiments, electrical conductors may be integrally formed with a fusible element. <FIG> illustrate exemplary embodiments, not encompassed by the wording of the claims, of a fusible element and/or electrical conductors <NUM>-<NUM>, which may be any of a wire, stamped element, or other conductor, and may be straight, coiled, or include one or more curvatures, bends, or formations with respect to the fuse body. It is understood that the electrical conductors may include one or more openings, or pre-formed weak spots (see <FIG>), such that in an electrical event, a desired portion may be configured to fail.

As described above, in some embodiments, not encompassed by the wording of the claims, the fusible element <NUM> may be attachable to a metallization of a portion of the fuse body, e.g., as shown in <FIG>. For example, the first end 375a may be attachable at a first slot 320a, which may have a coating, metallization, or other electrical conductor <NUM>, <NUM> as part of the fuse body <NUM>, to form a first connection. Similarly, the second end 375b may be attachable at a second slot 320b, which may have a coating, metallization, or other electrical conductor as part of the fuse body <NUM>, to form a second connection.

In some embodiments, not encompassed by the wording of the claims, the electrical conductor may be a wire, or stamped element, which may be formable at least partially around the slots 320a, 320b, 320a', 320b', 335a, 335b, 340a, 340b. As shown in <FIG>, a fusible element <NUM> may be positioned with respect to the fuse body such that a first end 380a of the fusible element is disposed in the slot 320a', and a second end 380b of the fusible element is disposed in the slot 320b'. In embodiments where the fuse body has a coating, or metallization of at least a portion of the fuse body (e.g., the slots are formed as electrical conductors), the fusible element may be attached to the fuse body directly via weld, solder, epoxy, or combinations thereof. In some embodiments, the fusible element <NUM> may be attached to the fuse body by winding, wrapping, or forming, respective first and/or second ends 380a, 380b around the fuse body <NUM>'. Although <FIG> illustrates a fusible element <NUM> wrapped around slots 320a', 320b' formed into side faces of the fuse body, it is understood and envisioned that a fusible element may be attachable (e.g., winding, wrapping, forming, welding, soldering, epoxy, or combinations thereof) to a fuse body <NUM>, <NUM>', <NUM>" having slots in any configuration, e.g., slots may be disposed in any of the edges, or top surfaces, and/or side faces.

In some embodiments, not encompassed by the wording of the claims, e.g., fuse body <NUM>" having T-slots formed in the first and second ends 310a", 310b", electrical conductors may be integrally formed with, or formed as separate components and welded to, a fusible element to attach to the fuse body <NUM>". As shown in <FIG>, electrical conductors <NUM>, <NUM> may be attachable to a fusible element <NUM>, and may be welded, or soldered, together. The electrical conductors <NUM>, <NUM> may be similar to electrical conductor <NUM>, <NUM>, e.g., formed in a "C" or "U" shape. However, a first out face, or top portion 645a, 650a may have two prongs, e.g., 645a1, 645a2, 650a1, 650a2, to at least partially be received in the slots 335a, 335b, 340a, 340b positioned on the side faces of the first and second ends of the fuse body. The prongs may be formed to accommodate the T-slot shape. In embodiments, the fusible element <NUM> may be configured to attach to the electrical conductor <NUM>, <NUM>. For example, a first end 675a may similarly have two prongs to mate with the prongs 645a1, 645a2, and a second end 675b may have two prongs to mate with the prongs 650a1, 650a2.

<FIG> illustrate an integrally formed electrical conductor and fusible element, and is referred throughout as the electrical conductor <NUM>, <NUM>. In embodiments, not encompassed by the wording of the claims, the electrical conductor <NUM>, <NUM> may be a stamped element, such as a sheet metal, and formed into a shape configured around the fuse body <NUM>". The electrical conductor <NUM>, <NUM> may have a first portion <NUM>, <NUM> as prongs, or parallel elements 615a, 615b, 620a, 620b, which may extend through the respective slots 335a, 335b, 340a, 340b. For example, element 615a, 620a may extend from the first end 310a" through the first slot 335a to the second end 310b" through the second slot 340a. Similarly, element 615b, 620b may extend from the first end 310a" through the third slot 335b to the second end 310b" through the second slot 340b. The elements 615a, 615b, 620a, 620b may be substantially parallel to each other and extend longitudinally along the fuse body <NUM>". The first portion <NUM>, <NUM> may extend into second and third portion, <NUM> and <NUM>. The second and third portions <NUM>, <NUM> may be aligned with the respective first and second ends 310a", 310b", e.g., may extend substantially parallel to an outer face, or top portion 650a, 650b of the first and second ends 310a", 310b". In some embodiments, not encompassed by the wording of the claims, the second and third portions <NUM>, <NUM> may be a single piece (see <FIG>), although in other embodiments, not encompassed by the wording of the claims, the second and third portions <NUM>, <NUM> may extend as separate, parallel elements (see <FIG>). In some embodiments, not encompassed by the wording of the claims, a fourth and fifth portion <NUM>, <NUM> may extend from the respective second and third portion <NUM>, <NUM> along a bottom face <NUM> of the fuse body.

The first, second, third, fourth, and fifth portions may be formed by placing the stamped element over the fuse body, e.g., so the first portion is substantially parallel along a top surface of the fuse body, and bending, or forming, the second, third, fourth, and fifth portions accordingly. In embodiments, the second and third portions may be substantially perpendicular to the first portion, and the fourth and fifth portions may be substantially perpendicular to the first portion and the respective second and third portions.

When the electrical conductors and/or fusible elements are attached and positioned as desired with respect to the fuse body, a cover <NUM>, <NUM> may be positioned over at least a portion of the fuse body, electrical conductor, and/or fusible element. It is understood that prior to assembling the cover <NUM>, <NUM>, any electrical connections, e.g., welds, solder, wrapping, windings, etc., may be visually inspected to verify the attachments.

The cover may be formed to mate with the fuse body, electrical conductor, and/or the fusible element. For example, the cover may be substantially rectangular, e.g., a box-shape, although the cover may be any shape to at least partially enclose the fuse body and other components.

In embodiments, not encompassed by the wording of the claims, the cover <NUM> may have a top face 805a and surrounding side faces 805b-805e, such that the cover <NUM> may be placed over the fuse body <NUM>, <NUM>', <NUM>", electrical conductors <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, and/or fusible element <NUM>, <NUM>, <NUM>. The cover <NUM> may include one or more locking features <NUM>, e.g., locking features 815a-815d. The locking features 815a-815d may be formed in respective corners of the cover <NUM>, as shown in <FIG>. The locking features 815a-815d may be formed to lock, or snap-fit, with the fuse body <NUM>, <NUM>', <NUM>". For example, the locking features 815a-815d may have protrusions, or recessions, or both, formed to interlock with equivalent recessions, or protrusions, or both, on the fuse body. When the cover is attached to the fuse body, a fuse <NUM> (see <FIG>) may be subsequently connected to other electrical components. As shown, at least a portion of the electrical conductors may be extendable out of the cover for electrically connecting to the other electrical components.

In some embodiments, not encompassed by the wording of the claims, a cover <NUM> may have a top face 810a and side faces 810c, 810e, such that end side faces are open, e.g., side faces aligned with the first and second ends of the fuse body. When the cover <NUM> is attached to the fuse body <NUM>, <NUM>', <NUM>", e.g., as shown in <FIG> to form fuse <NUM>', the electrical conductors <NUM>, <NUM>, <NUM>, <NUM>, or portions <NUM>, <NUM> of conductors may be electrically connectable to other electrical components.

The cover <NUM> may include locking features <NUM>, e.g., formed on an internal surface of side faces 810c, 810e. Locking features <NUM> may be formed as protrusions, recesses, or both, and may be configured to interlock with equivalent recesses, protrusions, or both, on the fuse body. The locking features <NUM> may be a snap-fit to lock the cover <NUM> onto the fuse body, to at least partially cover the fuse body, electrical conductors, and/or fusible elements.

The present disclosure is not limited to the particular embodiments described herein. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting beyond the scope of the appended claims. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the disclosure belongs.

Claim 1:
A fuse (<NUM>, <NUM>') comprising:
a fuse body (<NUM>, <NUM>') having a first portion (<NUM>,<NUM>') and a second portion (<NUM>, <NUM>'), the first (<NUM>,<NUM>') and second (<NUM>, <NUM>') portions configured to mate together thereby forming an internal cavity (<NUM>, <NUM>'), the fuse body (<NUM>, <NUM>') further having a first end (105a, 105a'), a central portion (105c, 105c') and a second end (105b, 105b'), the internal cavity(<NUM>, <NUM>') to extend from the first end (105a, 105a') through the central portion (105c, 105c') and to the second end (105b, 105b'), wherein the internal cavity (<NUM>, <NUM>') is narrower at the first end (105a, 105a') and the second end (105b, 105b') than at the central portion (105c, 105c');
a first inner termination at least partially attached to the first (<NUM>,<NUM>') and second (<NUM>, <NUM>') portions of the fuse body (<NUM>, <NUM>') at the first end (105a, 105a');
a second inner termination at least partially attached to the first (<NUM>,<NUM>') and second (<NUM>, <NUM>') portions of the fuse body (<NUM>, <NUM>') at the second end (105b, 105b'); and
a fusible element (<NUM>, <NUM>') disposed in the cavity (<NUM>, <NUM>') of the fuse body (<NUM>, <NUM>') and extendable from the first inner termination at the first end (105a, 105a') of the fuse body (<NUM>, <NUM>') to the second inner termination at the second end (105b, 105b') of the fuse body (<NUM>, <NUM>'), wherein the fusible element does not make contact with the fuse body (<NUM>, <NUM>');
wherein the fusible element is attached to the first inner termination at a first connection and the second inner termination at a second connection such that the first connection is inspectable for joint quality without removal of the first inner termination from the fuse body(<NUM>, <NUM>'); and the second connection is inspectable for joint quality without removal of the second inner termination from the fuse body (<NUM>, <NUM>'), when the fuse is in an assembled state.