Abstract: The structural element (1) for transferring mechanical forces between subassemblies at different electric potentials has an electrically insulating body which is provided with a mount (4) at each of it ends. The electrically insulating body at least partially contains LCP material. The mounts (4) are connected non-positively and positively to the electrically insulating body. Thanks to the use of LCP material, the structural element (1) can be made with particularly low mass, at low cost and with high mechanical strength.

Abstract: An electrical assembly, such as an insulator or a surge arrester, utilizing a plurality of elastomeric weathershed housings for enclosing a core member therein. The elastomeric weathershed housings are coupled and sealed together by an insulating collar. A radially directed force is applied to the collar or the weathershed housings to cause intimate contact between the collar and the end portions of the weathershed housings to provide a weathertight seal. In the preferred embodiment, the radially directed force is provided by insertion of the core member into the axial bore of the weathershed housings causing radial outward expansion of the weathershed housings into intimate contact with the insulating collar. In another embodiment, the radially directed force is provided by a heat shrinkable insulating collar, which is shrunk about the end portions of adjacent weathershed housings. The core member can be an insulating rod or a plurality of electrical components, such as metal oxide varistors.

Abstract: A metal end fitting (13) is hermetically sealed to an end fin (4) of an insulator component (1) which includes an insulating rod (2) surrounded by fins (4) of vulcanized elastomer by coating at least one layer of rubber/metal gluing agent on the bottom portion (12) of the metal end fitting (13), then disposing an intermediate washer (10) of raw elastomer between the metal end fitting (13) and the end fin (4), fixing the end fitting (13) to the rod (2) in such a manner that the intermediate washer (10) ring is cmopressed between the end fin (4) and the bottom portion (12) of the end fitting (13), and then vulcanizing the washer (10).

Abstract: A combined strain insulator and arcing horn assembly. The arcing horns comprise a pair of rods having V-shaped outer ends criss crossing one another along one lateral side of the insulator and arranged to form multiple self-extinguishing wiring gaps emanating from the common gap between the spaced apart apexes thereof. The assembly is eminently suited for installation vertically, horizontally or in an inclined position. The hardware components are identical and integral except for fasteners.

Abstract: An effective seal between the suspension mounting and the glass fiber rod of a compound high voltage insulator is obtained by filling the gap with a mixture of cross-linkable monomers or polymers formed from two or more reactive components, the mixture having a viscosity prior to cross-linking of less than 100,000 mPa.s and a penetration value between 1-500 mm/10 after cross linking. Particularly suitable are polymers based on polyorganodimethylsiloxanes.

Abstract: In a vacuum switch having a switching tube arranged between a head piece and a base, each of which is fastened to a support insulator, the head piece and the base being further connected by at least one insulating strut which has, at least one end, a transverse hole for fastening means, a longitudinal hole which goes through the transverse hole and which contains a conducting part begining at the transverse hole and is rounded at the closed end of the longitudinal hole is provided. The conducting part improves the dielectric strength of the insulating strut and may be made of one or more parts.

Abstract: The invention relates to an outdoor high voltage insulator, wherein the flashover due to the effect of external layers or deposits of pollution is prevented or at least shifted in the direction of higher degree of pollution. A resistance element (1) is connected in series with the insulator itself (2), with the leakage current prior to flashover producing a voltage drop over the resistance element (1). This voltage drop reduces the voltage on the insulator and prevents or retards flashover.

Abstract: An elongated, insulative tube of high mechanical strength consists of resin bonded glass fibers wound in alternating helical and circumferential winding patterns. The glass fiber convolutions at the outer limits of these winding patterns embrace metallic inserts, securely captivating them within the open ends of the tube. Tapped central bores in these inserts threadedly receive end fittings adapting the tube to a transmission line supporting function. The tube also externally mounts a pair of spaced arcing rings and internally mounts a varistor array for protecting a transmission line against lightning strikes.

Abstract: An elongated, insulative tube of high mechanical strength is equipped with fittings at each end for electrical connection with a high voltage transmission line and a grounded tower. An external spark gap is provided between a first arcing ring mounted in electrical connection with one end fitting and a second arcing ring mounted to the tube intermediate its ends and electrically connected with a contact member disposed within the tube. The portion of the tube interior between the contact member and the other end fitting is packed with a series array of varistor discs. The tube maintains the line in spaced relation with the tower, while the varistor array and spark gap absorb voltage surge differentials between the line and tower.

Abstract: A synthetic resin insulator comprising a fiber-reinforced plastic rod provided at its both ends with holding metal fittings; a plural number of overcoats fitting to and covering the plastic rod, each overcoat consisting of an elastic insulating material and provided at its outside with a shed; and a conducting path formed straddling the joint portion of adjacent overcoats flows leakage current through the conducting path, is not eroded at the joint portion of adjacent overcoats, and is very long in the life.

Abstract: An insulator core made of an organic substance and including a central rod (1) fitted with an insulating covering (4) is fixed in a metal cap (8) which is not machined.The end of the rod has undercut zones such as circumferential channels (10) or double cones (9), and a ductile metal cup (5) whose edges are made integral with the insulating covering (4) in a sealed manner is crimped on the rod. The cup (5) is itself embedded in the cap (8) by means of an organic cement or embedding substance (7) which is reinforced.

Abstract: A section insulator for trolley wires of electric railways is disclosed. The ends of two trolley wires are fastened to two insulating sliding strips between which arcing horns are arranged. The insulating sliding strips comprise a fiber-reinforced plastic wherein the filament fibers of the fiber reinforcement are stacked parallel to each other and are arranged perpendicularly to the sliding surface. The arcing horns are approximately U-shaped with the legs of the U-shape forming a leading runner and an adjusting loop bridged by an approximately V-shaped cross-piece. The arcing horns are disposed with the arc guiding parts facing each other and lying above the two insulating sliding strips in their operating position. Depressions are provided in the sliding surface of the insulating sliding strips to reduce accumulation of deposits.

Abstract: This disclosure teaches a suspension insulator comprised typically of a fiberglass rod with mounted metal hardware at each end and juxtaposed polymer sheds strung thereon, which insulator has been improved for high voltage application. Above system voltages of about 138 kV, undesirable radio noise and corona occurs in the area of the metal hardware in conventional designs. Addition of semiconducting polymers between the metal hardward and the polymer sheds significantly reduces the level of generated radio noise and eliminates the corona.

Abstract: The invention relates to line insulators made of organic material. Such an insulator comprises a bar (7) of high tensile strength, a protective sheath (8) made of an elastomer material, a plurality of fins (4) and an anchor fitting (2) at each end. In accordance with the invention, at least one inner part of the insulator is semiconductive along the whole length which separates the anchor fittings (2); this part may be constituted either by the sheath (8) itself or by the bar (7) and the bedding material in said fittings. Application, in particular, to line insulators intended for use in highly polluted zones.

Abstract: A bending resistant structure includes a rod (1) which is sealed in a casing (6), said casing receiving a double frusto-conical shaped wedging member (2,3,4) which applies jamming stresses to the rod. The wedging member is formed by a resin mass (2) moulded on the end of the rod (1), a resilient cap (3) covering the resin mass (2), and a thin metal sheathing (4) shrink-fitted over the cap (3), said wedging member being sealed in an associated casing (6), the structure being particularly resistant to high bending moments. Application to electric insulators and more particularly to those of the line-post type.

Abstract: The invention relates to line insulators made of organic material. Such an insulator comprises a bar (7) of high tensile strength, a protective sheath (8) made of an elastomer material, a plurality of fins (4) and an anchor fitting (2) at each end. In accordance with the invention, at least one inner part of the insulator is semiconductive along the whole length which separates the anchor fittings (2); this part may be constituted either by the sheath (8) itself or by the bar (7) and the bedding material in said fittings. Application, in particular, to line insulators intended for use in highly polluted zones.

Abstract: A suspension insulator for supporting a high voltage power cable suspended from a transmission tower includes an elongated rod for supporting a load in tension, a plurality of insulating shells serially disposed along the rod and end connectors for attaching a high tension load to the rod. At least one of the end connectors includes an elongated metal cylindrical retainer having one or more metallic members with one or more inclined surfaces disposed within the retainer and circumferentially disposed around the rod. The space between the inclined surface or surfaces and the rod is filled by an epoxy resin compound.In order to prevent excessive heating of the compound due to external flashover of the suspension insulator and the possible resultant separation of the end connector from the rod, the suspension insulator includes a generally cylindrically shaped, electrically conductive, current bypass sleeve disposed about the retainer to provide a current path physically remote from the epoxy resin compound.

Abstract: A modular lightweight, high voltage guyline insulator for VLF antennas. A glass fiber or "Kevlar" rod tension member that provides high tensile strength is enclosed by a porcelain jacket, which serves as a good high voltage insulator, preventing an arc breakdown along the surface and protecting the tension member from exposure to ultraviolet radiation which could cause the tension member to deteriorate. A rubber sleeve extends between each end of the porcelain jacket and a guyline fastening means, and together with the porcelain jacket forms a cavity or chamber around the tension member which is filled with SF.sub.6 gas, pressurized to 2 to 4 atmospheres (29.4 psia to 58.8 psia). Metal strips and metal toroid corona rings act to diffuse the electric field.

Abstract: For fixing metal sheaths on glass fiber reinforced plastic rods, which rods are used, for example, in composite insulators: the sheath is in a number of sections in a longitudinal array; there is an abutment inside the sheath at each sheath section, there is a shoulder piece on the outside of the rod inside each sheath section; the abutment in a sheath section is at one longitudinal side of the respective shoulder piece in that sheath section; elastic and compliant buffer means, such as springs, or the like, are placed between the abutment and its shoulder piece; the compliance of the buffer means increases toward one end of the arrangement to compensate for the different rates of expansion of the sheath and the rod; other embodiments all have appropriate buffer means in each sheath section, which buffer means increase in compliance moving toward the end of the sheath through which the rod exits.