Abstract: A surge arrester includes a short-circuit device. The short-circuit device includes at least one first base element. The first base element is rigidly connected in an electrically conducting and mechanical manner to a first electrode of the surge arrester. The short-circuit device also includes at least one spring arm arranged on the base element. The free end of the spring arm has a distance to the base element, and the spring arm extends over at least two adjoining electrodes of the surge arrester.

Abstract: An electric motor such as an AC induction electric motor includes a rotor having a rotor core and a rotor shaft. The rotor shaft defines an axially extending bore which has an electrical grounding ring positioned therein. The electrical grounding ring has an inertia insensitive configuration and forms a relatively low resistance electrical circuit segment between the rotor shaft and an electric motor housing to ground the electric motor rotor. The electric motor includes an oil lubricated bearing for the rotor shaft, and a sealing member such as a lip seal is positioned within the axially extending bore to inhibit lubricating oil intrusion therein. A non-rotating stub shaft may be mounted in the housing and extends into the axially extending bore to fluidly seal with the sealing member and electrically connect with the electrical grounding ring, which is fixed to rotate with the rotor shaft.

Abstract: The present invention is to provide a non-solid conductive surge absorber, which comprises a non-solid conductor formed by evenly mixing a non-solid solvent and a conductive medium and filled in a shielding case thereof in a watertight manner, and a plurality of metal plates each mounted on the shielding case in a watertight manner with a first end inside the shielding case and a second end extended out of the shielding case. Therefore, when a surge is generated, the number of electric charges accumulated on the metal plate connected to a circuit due to the surge will cause the conductive medium evenly dispersed in the non-solid solvent to rapidly and electrically connect with each other, so that the electric charges can be discharged to a ground terminal through the non-solid conductor for efficiently preventing electronic components on the circuit from being damaged by the surge.

Abstract: A method for providing a perpendicular magnetic recording head includes providing a metal underlayer and forming a trench in the metal underlayer. The trench has a bottom and a top wider than the bottom. The method also includes providing a PMR pole. At least a portion of the PMR pole resides in the trench. The method also includes providing a write gap on the PMR pole and providing a top shield on at least the write gap.

Abstract: The invention relates to a surge arrester having a cage design, and to a method for its production. According to the invention, during extrusion-coating or encapsulation of a module comprising two end fittings (3) and a plurality of varistor blocks (1) and at least one reinforcing element (9) in order to form the outer housing (5), first through-holes (11) for the reinforcing element (9) thereof are sealed with silicone. For this purpose, second through-holes (15) are provided in the end fittings (3), through which the silicone runs during casting or spraying, and enters the through-holes (11) from the outside, in order in this way to seal them against water and moisture.

Abstract: A dielectric arrestor insert for use in a chamber wafer processing system having a gas input line, an arrestor housing and a wafer processing space. The input line is able to provide gas to the arrestor housing. The arrestor housing is able to house the dielectric arrestor insert. The dielectric arrestor insert comprises a gas entry portion, a non-linear channel and a gas exit portion. The gas entry portion is arranged to receive the gas from the input line. The non-linear channel is arranged to deliver the gas from the gas entry portion to the gas exit portion. The gas exit portion is arranged to deliver the gas from the non-linear channel to the wafer processing space.

Abstract: A protection cover used for avoiding the influence brought about by the temperature effect of a varistor is proposed. The protection cover is made of ceramic or refractory material, and is used to bear high temperature generated when a metal oxide varistor breaks down to catch fire and to further cover the fire therein, thereby preventing the fire from burning out application components around the metal oxide varistor. Moreover, accommodation portions and grooves for receiving temperature breakers are disposed on the protection cover to provide a better contact surface between the protection cover and the temperature breakers so that the temperature breakers can more accurately detect the temperature on the protection cover, hence reducing the occurrence of the situation of erroneous actions.

Abstract: A MOV includes a MOV body, a first lead, a thermal cut-off fuse, a second lead and a silver electrode area. The MOV of the present invention employs the silver electrode area formed on and electrically coupled to the MOV body, thus the MOV has a lower inductance, which accordingly, enables the MOV to have a high and sound thermal conductivity. Hence, the MOV can fleetly and perfectly transfer heat to the thermal cut-off fuse in case of over-voltages, thus enabling the thermal cut-off fuse to cut off the power more quickly.

Abstract: A method of manufacturing a thin film magnetic head in which a top pole is divided into a pole tip and a tope pole layer, and the pole tip is formed on the flat surface of a bottom pole with a write gap layer in between. An insulating layer is formed in a region adjacent to the pole tip. A first layer of thin film coil is formed in a region wherein the insulating layer is formed. The thin film coil is covered by the insulating layer whose surface is flattened. A surface of the top pole layer facing the recording medium can be formed recessed from a surface of the pole tip facing the recording medium.

Abstract: A bulk degaussing apparatus and method for erasing magnetic media of various sizes. A media passage track is provided such that media passing therethrough is uniformly exposed to the magnetic fields provided through the gap. The bulk degaussing apparatus has fixed magnetic pole pairs predisposed for generating uniform magnetic field elements across a gap projecting magnetic flux across the gap for erasing various sizes of magnetic media, with the magnetic media receiving track positioned relative to the poles such that adjacent like poles are arranged on each side of the gap to counteract fringing effects. The bulk degaussing method for erasing various sizes of magnetic media provides a plurality of fixed magnetic pole pairs for generating uniform magnetic field elements on one or more sides of a degaussing region projecting magnetic flux into the region, and arranges the plurality of fixed poles so that adjacent poles counteract fringing effects.

Abstract: In the fabrication of a surge protector device which utilizes breakdown phenomena of a resistive film, a case which fixes metal bars in it, makes electrical contacts with the metal bars and contains oxidizing and refractory agents, a cap, metal bars and oxidizing and refractory agents are prepared in advance. In the fabrication process of the surge protector device using these elements, a step to control the force applied to the cap, the metal bars and the case so that the force applied to the interface between the resistive films and the mechanical contacts which form electrodes to the metal bars can be controlled. Automation process to fabricate the surge protector device will be realized and efficient fabrication of the precise surge protector device will be also realized. A surge protector device whose breakdown voltage is precisely controlled will be realized reproducibly.

Abstract: A high voltage switch, including: first and second electrodes having electrode surfaces; an electrically non conductive tube having an outer surface connecting the electrode surfaces; an electrically non conductive wall surrounding the tube and forming an enclosure in which the electrode surfaces and the outer tube surface are sealed; an ionizable material in the enclosure, an electric field being created in the enclosure responsive to application of a high voltage potential across the electrodes; and, an electrically conductive member adapted for movement in the tube between a first position substantially inside the enclosure and a second position substantially outside the enclosure, the electrically conductive member distorting the electric field when moved into the first position and causing an ionized current flow path between the electrode surfaces. A plurality of such switches can be ganged for simultaneous and/or sequential operation.

Abstract: A surge suppressing device includes a voltage-dependent resistor having an opening formed therethrough. A pair of preformed pads formed of an electrically conductive material is located adjacent a first and second side respectively of the voltage-dependent resistor proximate the opening. The electrically conductive material flows through the opening creating an electrical short between the first and second sides when the voltage-dependent resistor is heated in response to excessive leakage current flowing therethrough.

Abstract: The invention relates to a high-voltage thyristor conversion/inversion apparatus wherein alternating current supplied from A.C. buses (R), (S), (T) is converted into direct current through bridge-connected valves (U)-(Z), and direct current supplied from D.C. buses (P), (N) is inverted into alternating current. To the end of eliminating problems in reducing the area of the site of an A.C.-D.C. converting/inverting station still more, among the valves constituting a bridge, those (U), (V), (W) or (X), (Y), (Z) of each portion of three arms to be connected to the D.C. bus (P) or (N) of identical sign and lightning arresters (LA1), (LA2), (LA3) or (LA4), (LA5), (LA6) connected in parallel with the respective valves are received in a single sealed tank (TA), thereby to scale down the whole conversion/inversion apparatus. The apparatus is used in the A.C.-D.C. converting/inverting station.

Abstract: A terminal has a reciprocating print head bearing a series of linearly arranged, individually-magnetizable styli for printing on magnetic particle oriented paper. The terminal may be used as a printer, or as a display by combining the printer with an erasing head comprising a series of linearly arranged magnets which create a rotating magnetic field to erase the magnetic particle oriented paper when the erasing head is reciprocated. The print and erase heads are mounted on a common carriage. The terminal is cheap to manufacture and, if used as a printer, has the advantage of reusable paper. If used as a display, it required no refresh.

Abstract: A fast actuating water resistor of high power, especially for use in thermal power plants for transient assumption of loads in the event of a rapid reduction in load in the electrical system supplied by the plant or faults within the system includes a low-pressure steam boiler containing a pressurized hot highly conductive aqueous solution such as brine which is ejected from a ring-shaped nozzle producing an annular conical jet spray through a tubular electrode having a truncated conical configuration. The nozzle and electrode are located in a tank which also contains a grounded collecting grid on which the spray impinges after passing through the electrode which is electrically connected to a bus bar lead passing out of the tank to one of the phases of the electrical power system supplied by the plant.