Abstract: A fuse that includes an insulating housing made from two housing pieces made of thermoplastic material, terminals extending through slots in the ends of the housing, and a fusible element having ends connected to both of the terminals. The housing includes a tubular portion and slotted end portions located at each of the two ends of the tubular portion. Each of the terminals has an internal portion inside the housing to which a fusible element is attached, an external portion outside of the housing, and a middle portion between the internal and external portions and located within one of the slots.

Abstract: An externally mounted blown fuse indicator including a housing, a spring-biased plunger, a tungsten restraining wire, two terminals, and a cover, the plunger having a meltable region that is heated by the restraining wire and melts to release the plunger when the fuse blows, the spring engaging a midsection of the plunger, the housing carrying tabs at its ends for engagement with a switch to be activated by the plunger, the spring-biased plunger having greater than 3 ounces force at an extension of 0.11".

Abstract: A fuse that includes a tubular member made from insulative material, end block portions made from insulative material, a spanner joining together the end block portions, terminals extending through openings in the end block portions, and a fusible element having ends connected to both of the terminals. Each of the terminals has an internal portion inside the tubular member to which a fusible element is attached, an external portion outside of the tubular member, and a middle portion between the internal and external portions and located within one of the openings of the end block portions.

Abstract: A fuse including a fuse casing, an end cap terminal at an end of the casing, a substrate supporting a thin film fusible element thereon, and a disk component that is located at the end of the casing inside of the end cap terminal and has structure that defines a slot and engages an end of the substrate between opposing portions of the structure.

Abstract: A fuse including a fuse casing having an opening at an end thereof, a terminal at the end of the casing, and at least one elongated fusible element electrically connected at an end thereof to the terminal, the element being made of a sheet metal and having an elongated body portion that extends along a longitudinal axis that passes through the opening and a bent tab at the end thereof, the bent tab having a smaller cross sectional area at the bend than the body portion, the bent tab being soldered to a contact surface of the terminal that is transverse to the axis, the bent tab making an acute angle with the contact surface and with the axis. Also disclosed is a fusible element with a curved body portion.

Abstract: An adapter for cartridge fuses having ferrule type terminals which allows installing the fuses in larger size fuse holders. The adapter includes a solid body having a fuse clip engaging portion at one end and a fuse engaging portion at the other end. The fuse engaging portion is made up of two arcuate contact sections. One contact section is fixed with respect to the fuse clip engaging portion. The other contact section is allowed to circumferentially flex with respect to both the fuse clip engaging portion and the other contact section.

Abstract: An electric fuse of the type which has a tubular fuse casing and a solid fuse end terminal telescopically received within the fuse casing is provided with an annular seal which is contained within an annular groove formed in the outer lateral wall of the end terminal. The seal is formed from a settable material which has been injected into the groove through a seal injection opening in the outer end of the end terminal which extends from the axial outer end and into fluid communication with an annular groove provided in the end terminal. A seal material bleed opening is provided in the end terminal which also extends from the axial outer end of the end terminal and into fluid communication with the annular groove. The bleed opening is positioned substantially diametrically opposed to the seal injection opening.

Abstract: This invention relates to electric fuses meeting the requirements of Underwriter's RK1 classification. It includes a high-current interrupter in the form of a fusible element having serially arranged points of reduced cross-section and a low-current interrupter in the form of a plunger soldered to the high-current interrupter. The plunger is spring biased, and when the solder joint softens, the plunger separates under the action of the spring from the fusible element leaving a large gap between them. The separation of the plunger from the fusible element is allowed to be particularly large on account of the fact that the plunger may be allowed to move into a special fuse cap, known as a cap having a rejection feature as described, for instance, in U.S. Pat. No. 2,943,295 to V. N. Stewart; June 28 1960 for REJECTION TYPE FUSE CLIP and in many other patents.

Abstract: A plurality of ribbon-type fusible elements is arranged in parallel. Each of them includes a plurality of serially arranged points of reduced cross-sectional area. Each of these points is formed by a perforation and two current paths, each to opposite sides of the perforation. Along the plurality of fusible elements, like rungs of a ladder, is arranged a plurality of separate pairs of members of electric insulating material, each covering at least two points of the plurality of points of reduced cross-section. Fastener means project through each of the pairs of insulating members to firmly position the same in relation to the plurality of fusible elements.

Abstract: Means for affixing the ferrules to a fuse casing include heat resistant elastomeric elements mounted between the rims of a fuse casing and a pair of ferrules, said elements tending to move said pair of ferrules away from the fuse casing in a direction longitudinally thereof. The pair of ferrules having portions engaging circular grooves in said casing and thereby resisting any movement of said pair of ferrules under the forces of said heat resistant elastomeric elements.

Abstract: An electric fuse wherein the ferrules are held to the casing by means of circular grooves in the casing of the fuse engaged by the ferrules, and the ferrules are under the action of elastic forces tending to move the ferrules axially outwardly. The aforementioned elastic forces are produced by the ferrules themselves, or portions thereof.