Abstract: The disclosure relates to improved fastening mechanisms having both sufficient stiffness to bear a load and the ability to fit securely on a wide-range of sizes and shapes of tubing, including tapered tubing. Embodiments include a fastening mechanism with a first body part having a first inner surface, and a second body part having a second inner surface. A first fastening set may be disposed at a first end of the first and second body parts. A second fastening set may be disposed at a second end of the first and second body parts. The first and second fastening sets may be capable of securing the first and second body parts about a central tube, which may have tapered dimensions. The first inner surface and the second inner surface may each have a first subsurface and a second subsurface, the first subsurfaces may have a first contour, the second subsurfaces may have a second contour, and the first contour may fit a different size and shape of tubing than the second contour.

Abstract: This invention relates to a supporting structure for contacts of high-voltage disconnectors, characterized in that it comprises at least one vertical central composite insulator that is stayed by means of at least two inclined insulators, each of which is coupled at a first end to said at least one central composite insulator and at the second opposite end to a base body for said at least one vertical central composite insulator.

Abstract: An insulating support includes a pillar-shaped portion made of resin, a metal insert buried in one end surface of the pillar-shaped portion in an axial direction, a metal insert buried in the other end surface of the pillar-shaped portion in the axial direction, and one protrusion made of the resin and provided in a ring shape and integrally with the pillar-shaped portion on an outer circumferential surface of the pillar-shaped portion on a side of the metal insert. The metal insert includes a first cylindrical base portion and a first distal end portion. The metal insert includes a second cylindrical base portion and a second distal end portion. A whole of the first distal end portion is disposed within an extended range of the protrusion in the axial direction.

Abstract: The present invention relates to an insulating support for a power switchgear that insulates and supports the main body of a power switchgear provided in atmospheric air between a generator and a main transformer. The insulating support includes a core part that is molded only from a resin material and has a cylindrical shape; an exterior covering part that is molded only from a rubber material, is attached to an outer peripheral face of the core part, and includes a plurality of pleated parts; an end metal fitting that is attached to one end of the core part and is attached to the main body of the power switchgear; and an end metal fitting that is attached to the other end of the core part and is provided on the ground surface.

Abstract: A clamp is provided for mounting to a cable. The clamp has attachment means for connecting to a pipeline. Further, the clamp has plural clamp segments each with a curved section and tension devices connecting the clamp segments to each other to form a cylindrically shaped attachment area for accommodation of the cable in contact with the curved sections.

Abstract: The present invention relates to a high frequency transformer for a differential amplifier. An exemplary embodiment of the present invention provides a high frequency transformer for a differential amplifier, including: a first metal line that is integrated and formed in an IC chip through a CMOS process and that is connected to a differential signal line of a transistor included in the IC chip; and a second metal line that is formed in an MEMS chip through an MEMS process and that is inductively coupled with the first metal line in a state spaced apart from an upper portion of the first metal line, wherein the MEMS chip may be stacked on an upper portion of the IC chip.

Abstract: Apparatus for replacing a suspension insulator on a tower having a davit arm supporting an attached insulator and a conductor shoe attaching an energized conductor to the insulator lower end including a non-conductive board longer than and mounted to the tower below the davit arm, struts extending between the board and the tower, and a movable slider mounted on the board, the slider supporting a jack and a conductor lifting bar attached to the jack. Without contacting any energized components, a lineman moves the slider and operates the jack to lift and support the energized components, detaches the shoe from the insulator, moves the energized components to a remote position on the board, detaches and replaces the insulator while it is supported by a helicopter, moves the slider and operates the jack to lift the shoe into alignment with the insulator and attaches the shoe to the insulator.

Abstract: An isolated DC-to-DC switching power supply includes an isolation transformer having a magnetic core, a first winding around the magnetic core, a first winding-shield around the magnetic core, a second winding-shield within the first winding-shield, and a second winding within the second winding-shield. There is no direct coupling between the first winding and the second winding since the second winding is enclosed within the second winding-shield and the second winding-shield is enclosed within the first winding-shield.

Abstract: A circuit breaker according to the present disclosure includes a cradle having an accommodation space therein, the cradle having a plurality of terminals and a breaker main body having a plurality of terminal connectors contactable with the terminals, respectively, and a plurality of vacuum interrupters connected to the terminal connectors, respectively, the breaker main body being installed within the cradle to be movable between a connected position where the terminal connectors are connected to the terminals and a disconnected position where the terminal connectors are separated from the terminals. Each of the terminal connectors includes a plurality of segment conductors each having one end connected to the vacuum interrupter and the other end facing the terminal. According to the configuration, an amount of heat radiated may increase without an increase in an amount of copper used, thereby facilitating for cooling the terminal connectors.

Abstract: The present disclosure provides a method for fabricating a MEMS device including multiple bonding of substrates. In an embodiment, a method includes providing a micro-electro-mechanical systems (MEMS) substrate including a first bonding layer, providing a semiconductor substrate including a second bonding layer, and providing a cap including a third bonding layer. The method further includes bonding the MEMS substrate to the semiconductor substrate at the first and second bonding layers, and bonding the cap to the semiconductor substrate at the second and third bonding layers to hermetically seal the MEMS substrate between the cap and the semiconductor substrate. A MEMS device fabricated by the above method is also provided.

Abstract: An improved pole mount cable restraint insulator is described featuring a pin and bolt locking mechanism that may be used to secure a medium voltage 5 kV to 35 kV electrical cable to the insulator and riser pole. The cable restraint insulator includes a seat to secure the cable. A further improvement over existing cable restraints is the polymer insulating materials used in the construction. Such materials are lighter in weight, electrically track resistant, lower in cost and non-breakable. The cable restraint insulator may be constructed by injection molding and/or casting with variety of electrically insulating polymers.

Abstract: Device for keeping a heating wire (2) in position in a horizontal oven includes a ceramic bar (3) and a number of ceramic spacer elements (4). Each spacer element consists of a bar-shaped part, on which a Y-shaped part (6) is placed near the center of the bar-shaped part. The V-shaped part of the Y-shaped part can partially enclose the bar. Near one end, the bar-shaped part is preferably provided with a transverse part, which is at right angles to the bar-shaped part and runs parallel to the Y-shaped part, so that a U-shaped recess is created which can accommodate the heating wire and the other side of the Y-shaped part and the bar-shaped part together form an L-shaped recess in which the heating wire can also be accommodated. The one end of each spacer element is provided with a projection and the other end with a recess.

Abstract: A support system for transmission lines includes a base plate, a securing assembly, and a supporting arm. The base plate is secured to the transmission line pole with the securing assembly. The supporting arm can include an insulating apparatus; the insulator apparatus of the supporting arm is adapted to provide a safe dielectric distance from the transmission power line and the transmission line structure, e.g., power pole. A first end of the supporting arm is carried by a mounting member and is connected to the transmission line pole via the base plate, while the second end can receive a conductor with a connector. The connector is adapted to secure a conductor, and is positioned at the second end of the insulator apparatus.

Abstract: The cantilever and compression strength of a polymer post insulator decreases according to lengthening of lever length of the polymer post insulator. By combining polymer post insulators to construct a structure having an increased strength in an arbitrary direction, a polymer insulator apparatus and a method for mounting the same can provide a sufficient strength and rigidity even as a long insulator for high voltage that requires a long insulation distance. Polymer post insulator columns 12-1, 12-2, in which plural polymer post insulators 1-1 to 1-4 are stacked, are arranged in parallel. The polymer post insulator columns 12-1, 12-2 arranged in parallel are connected with each other via connecting plates 13-1 to 13-3 at each connection site of the polymer post insulators 1-1 to 1-4 constituting the polymer post insulator columns 12-1, 12-2 as well as at the top and bottom of the polymer post insulator columns 12-1, 12-2.

Abstract: A heat processing apparatus comprises a reactor tube in which matters to be processed are housed, a wire-shaped heating unit enclosing the reactor tube, a support device for supporting the heating unit at plural positions, and reinforcing members for reinforcing the support device. The support device includes plurality of holders stacked one upon the others, each of the holders has recesses on those two faces thereof which are contacted with faces of its adjacent ones, and when the holders are stacked one upon the others in a pole, the recesses of the two adjacent holders stacked form a hole through which the heating unit is passed. The support device has support members each supporting a pole of the holders stacked and each of the holders is engaged with its corresponding support member.

Abstract: The invention relates to high voltage suspension insulators of the single disc type and high voltage station post insulators consisting of unitary insulator sections. The insulator elements are designed so as to maximize the number of dry bands under adverse weather conditions thereby to maximize the total arc root resistance under arcing conditions so as to minimize the likelihood of flashover.

Abstract: An insulator housing comprising a resin bonded fibre tube carrying water repellent, spirally arranged inner sheds and water sheds made from strips of polymeric material provides improved outdoor electrical insulation. The insulator housing provides greater insulation performance per unit length of housing than prior art structures.

Abstract: Optical fiber-containing insulators each comprises an insulator body having a through hole provided in its central portion and extending along an axial direction thereof, an optical fiber core wire passing through the through hole, an insulating material filled between an inner peripheral surface of the through hole and the optical fiber core wire, and arrangements for preventing the filled insulating material from axially protruding out of the insulator body even at high temperature or spacers for holding the optical fiber core wire at the central portion of the through hole of the insulator body.

Abstract: An insulator-jack for replacing damaged electrical insulators in a string of insulators comprises a pair of threaded rods disposed in substantially parallel relation to one another, a pair of coplanar spaced-apart insulator clamping collars, each being connected to opposite ends of the rods by a pair of lateral arms, wherein one of the insulator clamping collars is movably positionable along the threaded rods by a pair of ratchet members to selectively vary the distance between the two clamping collars. The non-movable clamping collar is provided with an upwardly and inwardly projecting safety tongue which engages the connection between the insulator clamped within the collar and the next-above insulator in the string, and is also provided with inward projections along the internal periphery to securely engage the insulator and thereby prevents slippage of the insulator.

Abstract: A bullet-proof board includes a pair of steel plates of substantially identical thicknesses that sandwich a thick intermediate layer therebetween and a thin surface layer secured to that steel plate surface which faces a striking bullet. The intermediate and surface layers are made of such chemical fiber cloths or synthetic resin plates which absorb energy of a striking bullet. The bullet-proof board may be formed in the shape of a sidewall of a truncated-cone and secured to a suspension insulator for protecting it against gun shooting.

Abstract: The invention relates to a tower design for high-voltage systems consisting of several stories (2 to 12) which are connected to each other by means of insulators, where each story (2 to 12) comprises support bars (16) of electrically insulating material and cup-shaped node elements (24). According to the invention, the support bars (16) and metallic cross bars (26) enclose a rectangular area by means of the node elements (24) a supporting rib structure (32) of insulating transverse and longitudinal supports (34 and 36) is arranged, and that a cylindrical support body (42) with an axially arranged cylindrical core (44) is provided as the cup-shaped node element (24), where the cylinder surface (46) of the node element (24) is provided with two fastening posts (38) which are arranged at right angles to each other and at right angles to the end faces (48) of the support body (42).

Abstract: Hermetically sealed fiber optic cables (LW) are conducted through an insulator column consisting of several hollow insulators. The fiber optic cables (LW) are fastened to a support element (TE), whose one end is connected to the reference potential and whose other end is connected to a high voltage. The support element (TE) is characterized by a surface having only limited electrical conductivity. This assures that, as a result of the even field strength distribution thus guaranteed, no impermissibly high voltages are impressed on the fiber optic cable (LW). A non-conductive tube (GV) for conveying gas is wound around the support element (TE).

Abstract: An insulator which includes at least one plate-shaped dielectric component 3 having a cylindrical head 4, at least one connecting member 14 having at least one pin end 5 embedded inside a recess defined within the head of a dielectric component and at least one other connecting member having a cap 12 which covers the head of the dielectric and is sealed thereon, the one connecting member having a flange (15, 27, 28, 29) spaced from the embedded pin end and whose outer diameter is larger than the outer diameter of the head in which said end is embedded and the cap of the other connecting member having a flared base (16, 30, 31, 32) which covers an annular portion of the dielectric which extends beyond the outer diameter of the head, so as to define a rigid extension on either side of the dielectric component.The invention applies in particular to multiple-dielectric insulators in which the dielectric components are made of tempered glass.

Abstract: A porcelain insulator type circuit breaker comprises a lower porcelain tube secured to a supporting frame, an upper porcelain tube mounted on the lower porcelain tube, an interrupting unit accommodated in the upper porcelain tube, and a rotating device for connecting the lower porcelain tube and the upper porcelain tube in a rotatable manner.

Abstract: A V-suspension insulator assembly for suspending multiple conductors is disclosed, in which an angle of intersection of axial lines of connecting hardwares for connecting an inverted-U shape upper yoke to which V-suspension insulator strings for suspending multiple conductors are attached and a lower yoke which extends between opposite legs of the upper yoke is selected to be equal to or larger than an angle of intersection of axial lines of the insulator strings; and the intersecting point of the axial lines of the connecting hardwares is positioned near a center of gravity of a polygon defined by connecting points at which suspension clamps are attached to the lower yoke. With this construction, the movement and rotation of the lower yoke by load by wind pressure in a direction transverse to the conductors can be prevented and a space between the conductors can be reduced while preventing the mutual contact of the conductors and the twist of the conductor bundle.

Abstract: A suspension bracket and apparatus for a bundle conductor has a yoke plate suspended at opposite sides thereof by respective insulator strings. To reduce high voltage gradients across the lowermost insulators of the strings, one or more of the sub-conductors is clamped to the upper side of the yoke plate between the strings. To facilitate "clipping in" of this sub-conductor by providing a temporary suspension connection between one of the strings and the yoke plate in order to allow that string to be uncoupled and thereby to allow the sub-conductor to be raised past the uncoupled string, the yoke plate is provided with a cylindrical opening extending transversely of the axis of that string by which the temporary connector can be connected to the yoke plate.

Abstract: A method is disclosed for upgrading insulators of a current distribution system when the voltage of the system is to be increased. New, additional insulators are coupled with the existing ones, and the coupling is accomplished without detachment of the current conductor from the existing insulator. The mounting stud for the existing insulator is unsecured from a support member, such as a crossarm, is detached from the existing insulator, and is thereafter attached to a new, additional insulator. The two insulators are then coupled together to provide increased electrical insulation, and the mounting stud is resecured to the supporting member. Time and materials are saved by not having to detach and reattach the conductor, and by reusing the existing insulator, the conductor attachment means, and the mounting stud.

Abstract: A casing is divided and disassembled into the desired numbers of solid state insulating material units each of which is aligned with the others, with tapered end portion of the solid state insulating material units, and insulating bushing means, such as rubber gaskets or stress relief cones, which are inserted into the contact portions between said each insulating material units, and further solid state insulating units fastened by a common fastening means in a body with uniform compressive force.

Abstract: An improved circuit-interrupter is provided using rectangular bars for the power conductor assemblies, and having the material of the bars, and the number and thickness thereof, determine the current-rating capability of the equipment, for example, 1200 amperes, 2000 amperes or 3000 amperes, for example. Standoff insulating insulators, such as porcelain insulators, are preferably utilized for supporting the power conductor-assemblies, or power bus-bar assemblies, in spaced-apart relationship within the equipment.The movable contact-bridging assembly comprises spaced conducting contact-blades with the number thereof, and material dependent upon the current rating of the device. The configuration of the contact blades, comprising the movable bridging contact assemblies, is preferably such that slight lateral width of the movable contact assembly is necessary, for accommodating the usual operating-rod when rotation of the movable assembly is desired to effect the movement thereof from the operating mechanism.