Abstract: A load-breaking and load-returning apparatus and method of breaking and returning a load are provided for quickly breaking and returning a load to portions of a power line. The apparatus preferably includes at least one power line jumper cable including first and second cable ends and a first connector connected to the first cable end of the at least one power line jumper cable for connecting the at least one power line jumper cable to a portion of a power line. A load-breaking and load-returning device is preferably connected to the second cable end of the at least one power line jumper cable for quickly breaking and returning a load to portions of a power line responsive to a user thereof. The load-breaking and load-returning device preferably includes a second connector for connecting the load-breaking and load-returning device to a portion of a power line.

Abstract: Flashover protection covers are provided in a continuous length for covering power line spans between supporting structures. A flexible panel includes an inner surface and generally parallel opposite edge portions configured to be joined together to form a first longitudinally extending chamber. A longitudinally extending first wall is connected along an edge portion thereof to the inner surface of the panel. The first wall has an opposite free edge portion and is configured to form a second longitudinally extending chamber within the first chamber. The second longitudinally extending chamber is configured to enclose a power line when the panel edge portions are joined together. A second wall is connected along an edge portion thereof to the inner surface of the panel and is configured to inhibit electrical arcing from the power line into the first chamber between the first wall free edge portion and the panel inner surface.

Abstract: An electronic component holder has a recess portion opening outward in at least one of its edges and having dimensions corresponding to the dimensions of an electronic component chip to constitute an electronic component holding portion. At least one pair of inner side surfaces opposed to each other of the recess portion are each composed of an elastic material.

Abstract: An aerial rat/rodent guard for residential/commercial utility wires and cables and the like. A barrier plate manufactured from lightweight, non-conductive, smooth surfaced materials molded into a tear drop shaped plate. The center slot is located above the center of gravity allowing the plate's upright position. Removable grommets in the center slot provides the size of the center slot to be adjusted to the size of the utility wire upon which it hangs. A slit opening from the center slot downward to the bottom of the plate provides easy installation. Weight molded into the bottom quarter of the barrier plate allows the barrier plate to return to an upright position if tampered with by a rat/rodent. With the slit closed, a tail clip is attached to the bottom of the barrier plate which locks the slit in a closed position. Once mounted on the wires or cables, without the necessity of tools, the aerial rat/rodent guard does not need to be removed.

Abstract: The triggered wildlife guard is formed from first and second body sections hinged together to pivot between an open and a closed position. In the closed position, the first and second body sections latch together to form a hollow body open at a first end and having a top wall at a second end which defines a conductor opening. A spring assembly biases the first and second body sections toward the closed position, and a releasable trigger extends between the first and second body sections to hold them in the open position until the trigger is released. A wire stop formed on the first and second body sections bridges a gap therebetween in the open position to retain a bushing lead wire in the conductor opening.

Abstract: A cover of a simple construction is provided which can deal with a distance variation between battery posts. The cover 6 is made of a rubber material and has a narrow box-like configuration. A bottomed middle portion of the cover 6 forms a tubular portion 107 through which a braided wire 3 of a battery connection terminal 1 is to be passed, and the opposite ends thereof form post cover portions 108 for covering battery posts 2. Further, slits 9 are formed in side walls between the tubular portion 107 and the post cover portions 108, so that the post cover portions 108 can be bent upward. In this way, since the cover 6 can be elongated and contracted according to a distance between the battery posts 2, it can be easily mounted and the action of an undesired force on the cover 6 due to the vibration of batteries 5 can be effectively prevented.

Abstract: An electrically operated device and fastener assembly for establishing an electrical and mechanical connection on the device. The fastener assembly generally includes a fastener and a washer which may be permanently flattened against the device to establish an electrical connection to a piece of coated metal. Upon removal of the fastener, the washer remains permanently flattened against the device or piece of metal and mechanically connected thereto by a build-up of coating material on projections associated with the washer. Fastener assemblies may be constructed using, for example, sheet metal screws requiring only one of the washers in the assembly or machine screws which may require two of the washers.

Abstract: The invention relates to a shield which prevents squirrels or other animals from causing faults in power distribution substations. Switch and bus insulators are primary points of contact when a small animal crawls from a grounded, supporting structure across an insulator to an energized conductor. The present invention provides for a barrier on switch and bus insulators which prevents animals from coming into contact with a grounded structure and an energized conductor simultaneously, thus eliminating a ground path from the energized conductor through the animal to the grounded structure.

Abstract: The invention relates to a shield which prevents squirrels or other animals from causing faults in power distribution substations. Switch and bus insulators are primary points of contact when a small animal crawls from a grounded, supporting structure across an insulator to an energized conductor. The present invention provides for a barrier on switch and bus insulators which prevents animals from coming into contact with a grounded structure and an energized conductor simultaneously, thus eliminating a ground path from the energized conductor through the animal to the grounded structure.

Abstract: An electronic component mounting holder for surface mounting of an electronic component having a plurality of tape leads, includes a non-conducting three dimensional rectangular frame having vertical peripheral walls formed of nonconducting material for receiving an electronic component having a plurality of tape leads, the peripheral walls having a top peripheral edge and a bottom peripheral edge, a support ledge extending inward from inner surface of said peripheral wall for supporting an electrical component, a coil formed of foil windings having leads formed by extensions of said foil windings, a plurality of tape lead receiving areas formed in at least two sides of said bottom peripheral edge, said receiving areas each positioning a tape lead for surface bonding to a conductor on a PC board, a plurality of lead receiving recesses formed in corresponding sides of said top peripheral edge for receiving an outermost end of a tape lead, and a retainer for mounting in engagement with latch means in said frame

Abstract: A tubular shaped device for insulating an electrical component such as, but not limited to, a dry film capacitor. Along one edge of the device is a rectangular shaped cutout for receiving radially extending leads of the electrical component. The electrical component is secured within the device by spreading the device open, placing the electrical component within the spread-open device, positioning the leads of the electrical component within the cutout and finally permitting the device to once again assume its tubular shape.

Abstract: The post insulator (6) has an insulator body (8), of cured cast resin, which can be subjected to a pressure medium, and at least one potted fitting (11) penetrating the insulator body (8) and subjected to high voltage. The metallic support body (12) has a lateral surface (15). The intention is to obtain a post insulator which is of simple structure and which is designed for comparatively high mechanical loading. This is achieved by providing the lateral surface (15) of the support body (12) with a bonding layer (13) which adheres better to the lateral surface (15) than the cured cast resin. The cured cast resin is cross-linked with the bonding layer (13).

Abstract: A circuit insulating plate is interposed between neighboring ones of bus bars provided in stages in an electrical connection box. A portion, which confronts a plurality of tabs projecting at a short interval from one of the neighboring ones of the bus bars, includes a through-opening having a large area such that the tabs are passed through the through-opening. A rib extends along a peripheral edge of the through-opening, and the area is set so that the rib fits closely within a through-opening of an adjacent circuit insulating plate.

Abstract: An insulating assembly for an overhead power line has a main subassembly formed of two parallel spaced insulators joined at their ends by aluminum end pieces. The end pieces each have a slot aligned with the space between the two insulators and a rod projecting from the end piece in alignment with the slot but below the slot. This arrangement enables the subassembly to be hung on a hot power line with the line passing along the slots and the space between the insulators. The rods may be clamped to the line by any suitable device such as wedges and C-shaped clamps. With the subassembly thus mechanically and electrically connected securely to the line, the line can be severed at a location between the end pieces and the free ends forced apart.

Abstract: A load insulator 2, for interposition into a loaded line, comprises a plurality of mechanical links 4 connected together to form a chain, and an electrical insulator 8 arranged between a pair of adjacent interlocked links 10,12 in the form of an insert of insulative material to electrically isolate the links 10,12 of the pair from each other. A load sensing device may be provided for sensing the strain on the mechanical link. A measuring device 24 for measuring the resistance of the insulator 8 is provided to check the electrical condition of the load insulator, whilst a recording and indicating device allows for recording of electrical strikes and provide a lifetime expiry indicator.

Abstract: A cover for protecting a large number of electric wires in the housing in a bolt-screwed high-density multi-pole connector having a screw bolt. The cover is plate-shaped. The cover has an engagement hole corresponding to a bolt holder having a rectangular cylinder into which the screw bolt is inserted and a handle provided at one end where the electric wires are fixed and from which they are extracted. Thus, the cover can be easily mounted on the housing. With no fear of catching or breaking of electric wires, the direction of extracting the electric wires can be optionally selected. Further, the cover can be fabricated at low cost.

Abstract: An insulated mounting support is provided for installation near a feedpoint f a ladder-line transmission line. A first plate of electrical insulator material has a face from which two bosses extend, and has opposing sides abutting the face from which first and second appendages extend. A second plate of electrical insulator material has two recesses in a face thereof for mating engagement with the two bosses. The two bosses are maintained in a spaced apart relationship in correspondence with two cutouts provided in the transmission line. When the first plate and second plate are sandwiched about the transmission line near the feedpoint, the two bosses extend through the two cutouts and engage the two recesses. In this way, tension in the transmission line is absorbed by the two bosses. In addition, the first and second appendages respectively coact with first and second conducting wires extending from the transmission line at the feedpoint.

Abstract: A plurality of individual electrical conductors are held together in a bundle to form a power supply cable, for example, for installation in an aircraft. For this purpose a conductor securing device has a disk divided into two half disk sections interconnected by a snap-on connection. Each half disk section has outer elements for holding individual conductors and a bow-shaped shell located centrally inwardly so that two shells of two interconnected half disk sections hold at least one further electrical conductor between the shells. Each shell extends with a shell extension laterally and axially out of its half disk section and the shell extension has as a shoulder for axially retaining a strapping belt.

Abstract: A plastic outer shell for a DIN/MINI DIN computer connector has a hollow, elongated rear end extending from the body thereof at one end, the hollow, elongated rear end made from a flexible plastic material and integrally formed of a plurality of spaced, straight ribs in longitudinal direction and a plurality of spaced, curved ribs in transverse direction, the spaced, curved ribs permitting the cross sectional area defined in the hollow, elongated rear end to be expanded for holding cables of different outer diameter.

Abstract: By folding two or more mutually connected strips of flexible printed circuit film material, an elongated flexible printed circuit comprising a main strip and one or more side strips being produced, with a minimum waste of film material. For holding the flexible circuit in its folded state and controlling the bending radii of the strips, a holding clip which locks automatically on the film material being provided.

Abstract: A flexible induction heating coil comprising an elongated flexible core having proximal and distal ends. The core includes a plurality of core segments flexibly interconnected to make the core more flexible than the individual core segments. An elongated flexible inductor extends along the core.

Abstract: A motor phase insulation device having folding legs that can be easily manufactured with minimum material wasted. The legs are formed from slits in the device material.

Abstract: A method of constructing a filament support member from a single-piece preformed refractory metal wire having at least one loop protrusion formed in the wire and positioned between the ends of the wire. A section of glass tubing is positioned over and supported by the loop protrusion with a head portion of the loop extending beyond the section of tubing. Heat is applied to melt the section of tubing to form an insulating bead at the base of said loop protrusion. The head portion of the loop protrusion is then trimmed to interrupt electrical continuity in the wire and thus electrically isolate the respective ends of the wire.

Abstract: A method and apparatus for isolating electric power lines includes an insulator assembly to which is pivotally connected two line clamps. After the clamps clamp to the wire, the wire is cut so that the insulator isolates the line. In one form the clamping surfaces are curved in the longitudinal direction to make up for the loss of line length due to the elongation of the assembly under line tension. Cut-out assemblies for fuse and disconnect purposes are readily applied to the assembly by a lineman standing on the ground below.

Abstract: An electrically insulative chemically resistant support pedestal is provided for supporting heavy mechanical objects, such as chlorine cells which are positioned above a support floor. Each support pedestal is defined by a body of epoxy material for chemical resistant and structural support, which defines a central vertical passage intersecting the upper and lower surfaces of the pedestal. Leveling bolts extend from the lower portion of the epoxy body and function both to anchor the body in assembly with the support floor and to level it. The epoxy body is positioned in assembly with the floor and leveled, after which a quantity of uncured epoxy material is caused to fill the central passage of the body and fill the space between the epoxy body and the support floor to thereby establish grouted contact between the pedestal and the support floor.

Abstract: The present invention relates to a method and apparatus for electrically isolating the pump unit for a well, such as an oil well and the like. More particularly, the present method and apparatus electrically isolates the pump unit from electrical currents that are generated within a well casing when a fluid is pumped from the well.

Abstract: An improved digging iron for probing for buried high tension lines has for safety an insulative, non-wettable shaft of glaze-finish fibreglass which may additionally have a silicone rubber dielectric coating on it. The shaft has shouldered ends fitting sockets of the chisel shaped digging end and of a circular-section top section with the shoulders abutting the sockets and the ends bottoming in the sockets for support; the top section acts to reinforce the shaft for driving or as an integral hammer mass and serves as a balance for the digging end.

Abstract: A temperature increase or excursion sensor and locator consisting of a temperature sensitive cable which includes three electrical conductors, two conductors are separated by a dielectric member to form a linear strip capacitor and one of the two conductors has a number of thermostatic devices connected serially. Over or under temperature excursions are sensed and located by the cable when it is connected to control electronics by detecting the continuity and by measuring the capacitance of the cable. Under normal conditions, all of the thermostatic devices are electrically conducting and the control electronics measures the full capacitance from both ends of the cable and detects continuity over the full length of the cable. Upon a temperature increase or an excursion, one or more thermostatic devices become non-conductive, creating a discontinuity in one of the conductors and in addition the resulting capacitance is proportionately reduced.

Abstract: A breaking and insulating clamp for tensioned electrical conductors is disclosed, and which comprises an elongate bar of an electrical insulating material, with the bar mounting separate clamping members at longitudinally spaced apart locations for separately securing an electrical conductor or the like at each location. This permits the conductor to be severed between the clamping members, so that the remaining portions of the severed conductor are isolated and insulated from each other. In the illustrated specific embodiment, the clamping members each include a U-shaped bolt received within mating channels in the bar so as to preclude relative longitudinal movement between the bar and the bolt, and a pair of cooperating plates mounted on the bolt. The plates are designed to be clampingly pressed together so as to securely retain an electrical conductor extending therebetween in the longitudinal direction.

Abstract: An insulating structure for cooperation with an associated electrostatic precipitator having a generally U-shaped member supporting a depending weight. The insulating structure includes a section of a generally planar, generally circular first body which has a depending peripherally disposed flange extending about at least a part thereof and has a slot disposed in the section of the generally planar generally circular first body.

Abstract: A member of relatively rigid insulating material for supporting a wire end of an electrical coil, for example, and an electrical connector thereon in fixed position relative to the coil, the connector being of the type having a shank secured to the wire end and a terminal portion extending beyond the wire end. A portion of the shank has, in transverse section, maximum first and second dimensions generally at right angles to one another, the second being smaller than the first. The support member has a recess therein extending therethrough, the recess being open at one end for reception of the wire end and open at the other end to enable the terminal portion of the connector to extend out of the recess. The member also has a slot therein extending axially of the recess from one end to the other for entry of the terminal into the recess.

Abstract: Insect electrocution apparatus having a first wire mesh formed of perpendicularly crossed wires spaced from a second wire mesh formed of perpendicularly crossed wires. The spacing device comprises a main body portion having a length equal to the spacing distance with a pair of bosses extending axially from the opposite ends of the main body portion. Each of the bosses defines a slot which receives a wire from a respective wire mesh, and the wire meshes are retained in place with respect to the main body portion. One of the wire meshes is mounted to a chassis plate by means of a grid support formed of insulative material. The grid support is an elongated member having a first portion for connection to the grid and a second portion for connection to the chassis plate.

Abstract: A terminal block for simplified wiring of an electrical immersion heater assembly by providing for either single phase or three phase wire-up in opposite faces of the block. The terminal block has an electrically insulating body of disc-like configuration with three recesses defined in a first face of the block, each recess adapted to receive a lead connecting strap having a pair of apertures. Each of the three recesses has two bores extending into the body, the apertures of the straps alignable with the bores, for receiving leads of three separate heating elements through the apertures and into the bores for three phase wiring in the first face. The opposite face has an X-shaped recess which encompasses only four of the six bores for single phase wiring of four leads of the heating elements with a pair of curved straps. The body is of conical frustrum shape for better sealing characteristics and includes two additional bores adapted for receiving thermowells.

Abstract: An electrical grill assembly for use in a device for electrically exterminating insects, comprising inner and outer generally cylindrical metal grill members which are held in a coaxial mutually spaced relationship by insulator spacers interposed therebetween. The insulator spacers are structurally interlocked with the grill members at least partially by means of oppositely extending protrusions which are integrally formed on the spacers and which are received in radially aligned openings in opposed portions of the grill members.

Abstract: A device suitable for use in a railway rail-and-fastening assembly to insulate a rail from a rail clip and from an anchorage for the clip includes an elongate plate-like portion, a portion depending from one side of it and two lugs projecting from the depending portion away from the plate-like portion near opposite ends thereof. In contrast to prior proposals, the device is asymetrical, a flat surface on the top of the plate-like portion having its center nearer one end of that portion than the other end. A ramp surface leads up to the flat surface from said other end. The device is preferably made wholly of glass fibre-reinforced nylon and the thickness of the plate-like portion is preferably at least 5 millimeters.

Abstract: The invention relates to a supporting device for a magnetic core, a coil arranged on the core and an adjusting screw for changing the inductance of the coil. This complete unit is intended to be mounted on a printed circuit card with the supporting device being a holder for the adjusting screw and providing electrical insulation between the core and the printed circuit card. The supporting device is designed as a circular disc with an upright standing projecting part which is provided with an inner thread in which the adjusting screw can be inserted for adjusting the inductance of the coil. When mounting a unit consisting of a core, a coil, an adjusting screw and a supporting device, on a circuit card printed on both sides, the circular disc of the supporting device provides electrical insulation between the core and the printed circuit card.

Abstract: Discharge electrodes in electrostatic precipitators are protected from erosion caused by power arcs in the area along their length which is closest to the ground electrode plates by a shroud of high temperature insulating plastic such as Teflon. The shroud is formed in two longitudinally slidable interlocking sections which completely surround and insulate the electrode wire but can be assembled to the wire without disturbing its ends.

Abstract: Disclosure is made of a universally fitting electrical insulator for mounting between the armature shaft and the windings and laminations of an armature. The disclosure is also of a method for mounting the insulator in the armature. The insulator and method are particularly useful in the production of double insulated electrical hand tools.

Abstract: An improved supporting means for the power conductor assemblies in circuit breakers is provided including one or more pairs of side-by-side post-insulators for insulatingly supporting one or more of the power conductor assemblies of the circuit breaker. Additionally, another pair of side-by-side post-insulators may be utilized to support one of the power-conductor assemblies from the grounded frame structure of the circuit breaker. Improved strength is provided by utilizing pairs of side-by-side post-type insulators and also cost reduction is remarkably achieved. Mounting bolts may be cast into the ends of the post-type insulators, such as formed of porcelain, for example, to support suitable hardware, such as metallic channel members, for example, to accommodate the power-conductor assemblies.

Abstract: A method employing a wire holder to retain side-by-side lead and magnet wires, joined together at adjacent ends, in a fixed position with respect to and insulated from a magnet coil on which it is mounted. It relieves strain on the magnet wire.