Abstract: The present disclosure provides insulating covers for mounting brackets used to secure arrester assemblies to transformers. The purpose of the insulating cover is to protect wildlife from electric shock, and to prevent power interruptions on high voltage distribution lines caused by the bridging of high voltage circuits by wildlife.

Abstract: An overheating destructive conductive plate safety clip as well as a plug and a socket using that conductive plate safety clip are disclosed. The overheating destructive conductive plate safety clip limits two conductive plates from contacting with each other to form a closed path, and is destructed when overheating, opening the two conductive plates by an elastic force to form an open circuit. The overheating destructive conductive plate safety clip includes a first limiting element, a second limiting element and a connecting element. At least one of the first limiting element, the second limiting element and the connecting element is made of plastic, at least one of the first limiting element and the second limiting element is made of metal, and a destruction part is formed at a place where the plastic material is connected with the metallic material.

Abstract: The 3-electrode surge protective device includes: a surge protective device body including: an earth electrode; a ceramic cylinder; and a pair of line electrodes; and a fail-safe spring including: an elastic mount portion; and a short-circuit portion, a conductive material that is sandwiched between the fail-safe spring and the body; and a pair of first lead pins provided on the pair of line electrodes; a second lead pin provided on the earth electrode. In a normal state, the conductive material support the short-circuit portion at a separation position where the short-circuit portion is separated from the outer peripheral face of the body and the first lead pins. In case where the body is overheated and the conductive material is melted, the short-circuit portion is moved to a contact position where the short-circuit portion comes into contact with the second lead pin and the first lead pins.

Abstract: An electrical protection component with a short-circuiting device includes a gas-filled surge arrester that includes at least two electrodes. Preferably, one electrode in each case is arranged at the ends of the surge arrester. The electrical protection component has a thermal short-circuiting device, wherein the thermal short-circuiting device includes a clip having at least two sections. At least a first section of the clip is attached to the surge arrester by snap action. At least a second section of the clip at least partly surrounds the first section and is spaced apart from the first section by means of a fusible element. The second section has a short-circuiting link at an end. The short-circuiting link electrically connects the electrodes of the surge arrester to one another in the case where the fusible element melts.

Abstract: A structure for installing a lightning arrester between the cross arm mounted to the upper end of an electric pole and a power line is disclosed. A dead end clamp, the lightning arrester and an insulation reinforcing insulator are connected in series, an end of the insulation reinforcing insulator is connected to the cross arm by a shackle, a disconnector is connected to the voltage outlet portion of the lightning arrester, a grounding wire for diverting abnormal voltage to the ground is connected to the disconnector, and an insulation cover surrounds the dead end clamp and the voltage inlet portion of the lightning arrester.

Abstract: Breaker switch arranged on a wall (4) of an electric device (9) including a receptacle (20), containing a thermofusible composition (25) having a softening point &thgr;1, and a flexible metal strip (10) interposed between two studs (2a, 2b) fixed by one end to the wall (4) extending above the receptacle (20) and being provided in its free portion with means (14, 18-19) for the anchoring thereof in said thermofusible composition to bend the strip (10) against the two studs (2a, 2b). The receptacle (20) is advantageously extended by a heat probe (27) going to the core of the device (9). When the temperature of the device (9) exceeds &thgr;1 the anchoring means (14) are released from the thermofusible composition by the elastic return force of the strip (10) thereby opening the contact between the studs (2a, 2b). Application to a battery, in particular of the lithium-ion type.

Abstract: An electrical component is installed in a plastic cup. The component has two electrical connecting lines, and a parting location that is bridged by a solder metal is arranged in one lead. In addition, a prestressed spring is arranged at the one lead for removing the lead from the parting location during melting of the solder metal as a result of an overload, so that the component is disconnected from a current source. The one lead is pinched to a thickness of 0.2-0.5 mm.

Abstract: A stamp-making apparatus is provided in which a transparent presser plate is arranged such that the presser plate is parallel with a stamp-making object material, an ink ribbon having a stamp image formed thereon is urged against the stamp-making object material via the presser plate, and exposure of the stamp-making object material to light is carried out via the ink ribbon as a mask. A ribbon feeder rolls out an ink ribbon wound around one end portion thereof to a position facing the stamp-making object material, and then rolls up the ink ribbon around another end portion thereof. A relative translation of the presser plate and the stamp-making object material is made toward each other by moving at least one of the presser plate and the stamp-making object material to thereby urge the ink ribbon against the stamp-making object material. A guide guides the ink ribbon when the ink ribbon is fed, to space between the presser plate and the stamp-making object material.

Abstract: A current-limiting switch, with current connections and contacts, at least one of which is movable, having an associated drive, for opening the moving contact when a predefined electric current intensity is exceeded, are provided. The drive is a thermoelectric drive where a disk-shaped resistor body is present, in a closed housing made of insulating material, for high-intensity discharges, plurality of resistor bodies and associated electrode disks, acting as contacts, are connected electrically in parallel and mechanically in series in the housing made of an insulating material (1). This results in increased switching capacity with compact design.

Abstract: A surge absorbing device with protection function to protect a circuit from overvoltage and overcurrent, comprising a gap or microgap surge absorbing element and a lower melting point metal wire connected therewith. A plurality of gap or microgap surge absorbing elements to the circuit to be protected, and each of the lower melting point metal wires respectively corresponding to each of gap or microgap surge absorbing elements being in contact with all of the gap or microgap surge absorbing elements.

Abstract: A gas-tube arrester includes an arrester body in which an inert gas is contained, and first and second electrodes face each other separated by an insulator. An insulating, heat-resistant film is in contact with the first electrode and has a plurality of small holes. A low-melting point metal plate layered on the insulating film has a melting point lower than a decomposition or softening temperature of the insulating film. A conductive leaf spring electrically connected to the second electrode presses the low-melting point metal plate toward the insulating film, so that, when a high voltage is applied between the first and second electrodes, an electrical discharge occurs between the first and second electrodes through the small holes of the insulating films.

Abstract: A device for connecting and then isolating and disconnecting an arrester can be mounted in an insulating bracket. The device includes first and second electrical terminals and first and second electrically conductive washers. The first washer abuts the first terminal. The second washer is spaced from the first washer and from the first terminal. A non-conductive gap spacer is disposed between the two washers and between the second washer and the first terminal. A cartridge with an explosive charge is mounted within the second terminal in its end facing the first terminal. A fuse-link spring extends through aligned openings in the two washers and connects the first terminal to the cartridge.

Abstract: A gas-tube arrester includes an arrester body containing an inert gas and having first and second electrodes positioned in spaced, facing relationship to each other and separated by an insulator. An insulating, heat-resistant film is in contact with the first electrode and has an opening and a plurality of small holes. A metal plate layered on the insulating film has an opening communicating with the opening of the insulating film. A low-melting point metal plate layered on the metal plate to cover the openings has a melting point lower than a softening temperature of the insulating film.

Abstract: A thermal overload protection device for electronic components, in particular for the telecommunication and data technology. The overload device has a spring-elastic shorting link 6 and a melt element 13. Tripping of the shorting link 6 performed in dependence of the fusing process of the melt element 13. In order to obtain a SERVO FAIL SAFE behavior, the spring force of the shorting link 6 is arbitrarily high. Devices 15, 17, separate from each other, are provided, according to the invention, for separately tripping and actuating the shorting link 6.

Abstract: A surge absorbing element is parallel connected to an electronic device via a pair of communication lines. A normally closed thermal response switch is serially connected between the electronic device and the signal source on the input side of the surge absorbing element. When a surge voltage is instantaneously applied to the communication lines, the thermal response switch remains in the closed position and the surge absorbing element acts to suppress the surge voltage. When an overvoltage or over current is continuously applied to the communication lines, the thermal response pieces of the thermal response switch open and simultaneously release the movable body. Consequently, the electronic device is disconnected from the signal source, thus stopping the continuous overvoltage or overcurrent from flowing to the electronic device and the surge absorbing element. Simultaneously, the reset pin is projected through the casing.

Abstract: A miniature solid state surge protection device having an unsealed solid state device having first and second electrodes with the first electrode in contact with a fusible pellet is provided. When a surge occurs the pellet melts to thereby short the first and second electrodes together.

Abstract: The surge absorber having a surge absorbing element, and first and second wire means for electrically connecting the surge absorbing element across the input lines of an electronic device. The first and second wire means are connected to the surge absorber by conductive heat releasable means, for example, a low melting point solder. The second wire means includes a spring loaded member such that, on release of the first or second wire means by the first or second heat releasable means, respectively, by melting of the solder due to heat generated by the surge absorbing element, the surge absorbing element moves away from the first or second wire means. The surge absorber prevents an abnormal heating of the surge absorbing element when continuous overvoltages or overcurrents pass therethrough.

Abstract: A surge arrester disconnecting device which includes a fixed electrode, a movable electrode, and a latch device for holding the two electrodes in engagement. A trigger device, associated with a first spring and a fusible wire stretched between the movable electrode and the trigger device, releases the latch when the fusible wire is melted by continuation current therethrough. Upon trigger actuation and latch release, a second spring assists in the non-explosive disconnection of the movable electrode.

Abstract: Electrical distribution apparatus, such as a pad-mounted electrical distribution transformer, including an electrically grounded tank, an electrical element in the tank, and a draw-out surge arrester assembly which extends into the tank. The draw-out surge arrester assembly includes a housing, and a draw-out device removably disposed in the housing. The draw-out device includes a fuse connected in series with the surge arrester, between the electrical element and grounded tank, with the fuse being sized to isolate the surge arrester from the electrical element, should the surge arrester fail to recover properly from a voltage surge.

Abstract: A module for the protection of multiwire lines against overvoltages comprises a casing formed by a receptable and a terminal carrier plate. The terminal carrier plate comprises a pair of terminals for each wire of the multiwire line, and an earth terminal. Overvoltage diverters are connected to said wires and each have a first electrode soldered to a U link which connects, the two terminals of each pair of terminals, and a second electrode soldered to a transverse bar itself soldered to an extension of the earth terminal. The subassembly connected to the terminal carrier plate is disposed within the receptacle and is potted in a plastic potting substance. This module may be used for the protection of telephone lines.

Abstract: A rapid-start fluorescent lamp includes a pair of spaced electrodes within an envelope with one electrical lead connected to an electrode and the other lead coupled to the electrode by a thermally-sensitive bi-metal strip whereby one end of the bi-metal and one end of a conductor are formed to provide a straight member within a U-shaped member such that the straight U-shaped members are in electrical contact at temperatures above and below a given range of temperatures and electrically disconnected at the given range of temperatures.

Abstract: A rapid-start fluorescent lamp has a thermally-sensitive circuit breaker disposed thereon for disconnecting the electrodes of the lamp from an energizing source at a given range of bulb temperatures and for connecting the electrode to the energizing source at bulb temperatures above and below the given range of bulb temperatures whereby the electrodes are energized during lamp manufacture and until conductivity of the lamp is established.

Abstract: An open fuse cutout has a built-in lightning arrester. A supporting insulator has an attachment hole extending substantially perpendicularly to the axis thereof with the lightning arrester element fixedly fitted in the attachment hole. The lightning arrester element has a charging electrode held in abutment against either one of upper and lower electrodes, and a grounding electrode confronting a grounding member across a spark gap.

Abstract: An open fuse cutout has a built-in lightning arrester. The open fuse cutout includes a supporting insulator with a protective cap fixed to an upper end thereof and containing the lightning arrester disposed laterally or vertically. The lightning arrester element has a charging electrode confronting an upper electrode across a first spark gap and a grounding electrode confronting a grounding member across a second spark gap.

Abstract: A device for protecting the secondary winding of a current transformer against destructive or dangerous overvoltages when connected across the secondary, has a transparent tubular casing with a stud support and conductive stud within one end. The stud is threadably mounted in the stud support so it can be adjusted longitudinally and it has an arcing surface on its inner end. Within the other end a support member carries a longitudinally sliding conductive plunger. The plunger is biased inwardly towards the arcing surface of the stud but it is restrained from inward movement by a fusible element which engages it and restrains it. The fusible element forms another arcing surface spaced a predetermined distance from the arcing surface on the stud. One terminal is provided on the outer end of the conductive stud and another on the outer end of the support member connected to the plunger by a flexible braid. A small overvoltage of short duration causes an arc current to flow to limit the voltage.

Abstract: A device for connection to lightning arresters isolates the grounded lead and contains the resulting spark or arcing flame, including any hot particles generated when ground disconnection is made due to excessive current flow through the arrester. A central spacer member is screwed onto the existing ground lead terminal of the lightning arrester and contains an arc extinguishing channel with an internal fusible link adapted to melt in an overload condition. A shielding cup surrounds the central spacer member for containment of sparks and arcing, and a ground lead connector wire extends from the internal fusible link to a new ground lead terminal at the exterior of the shielding cup, for connection to a grounded lead.

Abstract: A self-contained device to protect electrical appliances from damage or destruction caused by abnormal power surges due to lightening and other causes is plugged into any household electrical outlet and has a receptacle for the plug of the power cord leading to an appliance. The unitary device contains readily replaceable fuses directly in line with the appliance power line and the fuses are chosen to allow the appliance to receive the necessary power to operate while preventing it from receiving excessive damaging power. Extreme power surges due to lightening and the like are prevented from jumping the gap between the end terminals of blown fuses by following a grounding power stop clipped onto the fuse bodies near one pair of their end terminals and leading directly to a grounding conductor. The device is embodied in either a 110 v or 220 v configuration with two and three fuses respectively, and is also embodied in a television receiver protective arrangement.

Abstract: A lightweight frame having a base of non-conducting material and end frame members consisting of aluminum mounts a pair of clip-type fuse supports. Each fuse support is attached to connectors which extend through the housing for connection to the lead in and ground lines of a radio, television, or like antenna. A plastic cover snaps in place over the base and ends to allow the user to view the condition of the fuses.

Abstract: A device for protecting electrical appliances from electrical surges having male prong members to connect the device to an electrical wall outlet; a female receptacle to receive a plug of the appliance; a self-restoring, current diverting spark gap means for interrupting current at the female receptacle at a predetermined voltage level.

Abstract: A gas tube arrester protector for protecting a pair of telephone lines from high voltage or surge current includes an insulating housing in which is disposed a three electrode gas tube overvoltage arrester having a pair of line electrodes and a ground electrode. The ground electrode is coupled to ground potential and each of the line electrodes is coupled to one of the telephone lines through a terminal line, a supporting terminal and a fusible link. The fusible links are in thermal relationship with the line electrodes and extend through cavities formed by spacers disposed adjacent each of the line electrodes. Whenever the line electrodes are heated sufficiently during an extended fault condition, the fusible links melt within the spacer cavities such that the line electrodes are disconnected from the terminal lines and thereby from the fault occurring on the telephone lines.

Abstract: This invention provides a surge absorber for absorbing surges of electric current. The absorber has a metal oxide varistor hermetically sealed in a hollow insulator by a top and a lower electrical terminal and also has a conductive rod extending substantially downwardly and electrically connected to ground and to the lower electrical terminal by solder and also thermally connected to the metal oxide varistor whereby when the varistor is heated by a surge of an electric current therethrough to a temperature to heat the solder above the melting point of the solder, said conductive rod gets separated from the lower electrical terminal to fall downwardly, thereby stopping the electric current through the metal oxide varistor to ground.

Abstract: A circuit interrupting device comprising a vacuum fuse having an evacuated envelope wherein one or more fusible elements electrically connect spaced open ends of aligned tubular electrodes which have respective sealable ends external of the envelope and provide means for facilitating assembly and processing of the fuse.