Abstract:
A temperature fuse which is melted with high operating temperature accuracy at a desired predetermined temperature in the range of 140° C. to 160° C. A fuse element is made of an alloy consisting essentially of 52-100 wt. % indium and the balance tin, and with this construction there can be achieved the temperature fuse which is melted with high operating temperature accuracy at a desired predetermined temperature in the range of 140° C. to 160° C.
Abstract:
A fusible link mounting method in which a fusible link is mounted onto a fusible link housing, and a leg portion of the fusible link and a terminal of an electric wire are tightened and connected together by a bolt. In the method, the bolt is previously tightened provisionally with respect to the fusible link housing, after then, the terminal including a bridge portion so formed as to be able to pass outside a head portion of the bolt provisionally tightened is slid and inserted in a direction right angles to the bolt tightening direction in a separate step to thereby position a connecting portion of the terminal between the head portion of the bolt and the leg portion of the fusible link, and, next, the bolt is actually tightened to thereby connect the leg portion of the fusible link and the connecting portion of the terminal to each other.
Abstract:
A fuse holder device including a casing, at least one pair of substantially cylindrical terminals respectively mounted inside the casing, each terminal having a split receptacle at one end adapted to receive one end of a respective fuse and an electric wire receptacle at an opposite end adapted to receive one end of a respective electric wire, at least one fuse respectively connected between the at least one pair of terminals, a plurality of electric wires respectively connected to the terminals at two opposite ends of each fuse, and a plurality of clamps respectively mounted around the electric wires inside the casing to secure the electric wires to the terminals.
Abstract:
A holder (10) for a fuse (18) of the type typically used in automobile and marine applications. The fuse includes a fuse element encased within a generally rectilinear insulative fuse body (20), with a pair of parallel coplanar conductive blades (22, 24) in contact with opposite ends of the fuse element and extending out the fuse body. The holder is a unitary molded insulative plastic piece having a base member (12), a capture plate (14), and a cover member (16). The capture plate and cover member are hingedly secured to the base member on opposite sides thereof, with the capture plate adapted to overlie the base member and the cover member adapted to overlie the capture plate. The base member includes pockets with retention wings (50) for holding wire- terminating receptacles (28) and the capture plate locks the receptacles in place by means of blocks (62) extending into the pockets. The capture plate includes apertures (58, 60) aligned with the receptacles for receiving therethrough the fuse blades. The cover member includes a cavity (92) for holding the fuse bodies of the fuses engaged with the receptacles and strain relief blocks (96) engaging the wire segments (52) terminated by the receptacles.
Abstract:
A coaxial cable fuse having a central conductor, an outer conductor disposed coaxially with respect to the central conductor, an insulating medium disposed between the central conductor and the fusible outer conductor, and an insulating layer covering the fusible outer conductor. The outer conductor may be composed of fusible conductor for causing an open circuit to be formed in the outer conductor in response to an electrical current passing through the outer conductor. The open circuit is formed prior to any substantial heating of the exterior insulating layer of the coaxial cable to which the fuse is attached to reduce the likelihood of fire hazard due to heating of the insulating layer. The coaxial cable fuse may be used in an electrical interface apparatus adapted to interconnect a coaxial distribution cable and a premise coaxial cable. The electrical interface apparatus has a housing and a coaxial cable protector with a surge protector and a fail-short mechanism disposed in the housing. The coaxial cable fuse is preferably connected between the coaxial distribution cable and the coaxial cable protector.
Abstract:
A fuse holder assembly for a cylindrical fuse of the type including a fusible link retained in an insulative sleeve. The assembly includes first and second insulated conductors, first and second metallic terminal elements for attachment to the end of the conductors and including a receiving end for holding one end of the fuse. The assembly further includes first and second sleeves of resilient insulative material for receiving corresponding conductors in an interference fit with each sleeve being slidable along the outside surface of the conductor. A first cap of relatively rigid insulative material includes a barrel defining a cavity for receiving the first terminal element with the cap having a facing end portion and a remote end portion. The cap includes an intermediate internal ledge positioned between the end portions for abutting the fuse-receiving end of the terminal element, and a remote internal ledge positioned at the remote end portion of the cap for abutting a sleeve. The remote ledge defines an opening for passage of the first conductor. A substantially similar second cap is also provided for longitudinal movement towards the first cap thereby causing the fuse to be received in the fuse-receiving portions of the terminal elements and with the sleeves bearing against their corresponding remote ledges of the caps, to provide a degree of water resistance.
Abstract:
An improved electrical fuse having axial leads (5) and comprising a fuse wire in a cylindrical sleeve (2) supported at its ends by lead carrying end caps (3) is coated over the length of the fuse body by an adherent insulating layer of plastic (7). Improved humidity resistance and mechanical strength are achieved and control of coating thickness is improved. Use of hot plastic for the adherent insulating layer (7) reflows solder joint (4) reducing instances of open or high resistance fuses which must be rejected. Also, the i.sup.2 t performance is significantly improved over other adherent coatings.
Abstract:
A microfuse (10) with a ceramic chip (12), thick film pads (14), fusible wire (16), attached to pads (14) without solder or flux, ceramic coating (18) and plastic body (20). External lead (24) configuration can be axial, radial or surface mount. The method of manufacturing the fuse (10) is improved by utilizing a wire bonding technique in order to improve the quality of the manufacturing process and increase the reliability in performance of the fuse and reduce manufacturing cost.
Abstract:
An hermetically sealed terminal construction having one or more terminal pin assemblies wherein inner and outer pin parts are interconnected by a fuse link surrounded by a protective capsule defining an expansion cavity, the capsule having a vent port closed by a blow-out plug, the terminal pin assemblies extending through and being hermetically sealed to sleeve forming parts of the supporting base, including a dielectric sealing member which covers the protective capsules, the blow-out plugs and contiguous portions of the adjoining pin parts, the blow-out plugs being adapted to be expelled from the protective capsules upon the build-up of pressure within the capsules caused by disintegration of the fuse links, thereby cutting off the flow of current through the terminal while maintaining the integrity of the hermetical seals by means of which the terminal pin assemblies are mounted to the terminal base.
Abstract:
A fuse holder includes a pair of electrical terminals which releasably clamp opposite ends of a fuse. Each terminal has a wire terminating, slitted barrel portion to which wires are connected without a need for tools. The fuse and the terminals are enclosed within a two piece dielectric housing adjustable in length to accept a range of fuse lengths. Means are provided to prevent undesired loosening or opening of the housing.