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| Number | Title | Issue Date |
| 7869180 | Spark gap apparatus and method for electrostatic discharge protection An apparatus for providing electrostatic discharge protection includes a plurality of conductive circumferential extensions defined by overlapping circular voids between a first conductor surface and a second conductor surface. ... | 01/11/2011 |
| 7697252 | Overvoltage device with enhanced surge suppression An overvoltage device that is formed from a MOV device that is coupled in parallel with a spark gap. This device is coupled upstream from electronic components to protect these components from damage. For example, in one embodiment, the overvoltage device is coupled... | 04/13/2010 |
| 7508644 | Spark gap apparatus and method for electrostatic discharge protection An apparatus for providing electrostatic discharge protection includes a plurality of conductive circumferential extensions defined by overlapping circular voids between a first conductor surface and a second conductor surface. ... | 03/24/2009 |
| 7324319 | Surge protection device A surge protection device includes a first electrode and a second electrode. An air breakdown spark gap is between the second and first electrodes, an arc being formed upon an ignition of the air breakdown spark gap. A series arrangement of a potential dividing elem... | 01/29/2008 |
| 7215083 | Microwave generator Microwave generator having two electrodes which are provided in a housing and are separated via a spark gap which breaks down when a high voltage is applied in order to emit microwaves, in which the first electrode (6) is in the form of a pot, and the other, ... | 05/08/2007 |
| 7161784 | Spark gap apparatus and method for electrostatic discharge protection An apparatus for providing electrostatic discharge protection includes a first conductive trace and a second conductive trace. The first conductive trace defines a first conductive periphery and is deposited on a first surface. The second conductive trace defines a ... | 01/09/2007 |
| 7035073 | Central office surge protector with interacting varistors A central office surge protector having at least one gas tube and at least one varistor. The at least one varistor interacts with the at least one gas tube to lower the impulse breakdown voltage of the gas tube. The at least one gas tube may be a two or a three elem... | 04/25/2006 |
| 6956458 | Arrester disconnector assembly having a capacitor A disconnector assembly is provided for an arrester. A non-conductive housing has first and second opposite ends separated by an internal chamber. A first electrical terminal is connected at the first end. A second electrical terminal is connected at the second end.... | 10/18/2005 |
| 6917501 | Electrostatic discharge protection apparatus and method employing a high frequency noncoupled starter circuit An apparatus and method for providing electrostatic discharge protection. An exemplary micro tube spark gap type electrostatic discharge protection device comprises first and second separated spark electrodes hat form a spark gap therebetween. A high frequency nonco... | 07/12/2005 |
| 6912108 | Protective equipment for a series-capacitor installation A series-capacitor installation intended to be placed on a platform, insulated towards ground, for connection into a power line (L) for carrying a line current (IL) has a first and a second capacitor group (C1 and C2, respectively). The capacitor group... | 06/28/2005 |
| 6731490 | Surge absorber and production method thereof The invention relates to a surge absorber provided with; a surge absorber element composed of a columnar non-conductive member and a conductive film formed dividedly via a discharge gap on a peripheral surface of the non-conductive member, a pair of sealing electrod... | 05/04/2004 |
| 6678141 | Electrical component with fault arc protection The component with fault arc protection has an insulator in the form of a pillar, a first electrical conductor system which is provided on the insulator head and can be connected to high-voltage potential, and a second electrical conductor system which is... | 01/13/2004 |
| 6496350 | Electrostatic wafer chucks and charged-particle-beam exposure apparatus comprising same Electrostatic wafer chucks are disclosed for use in holding a substrate (e.g., semiconductor wafer) during processing of the substrate in a vacuum chamber or other reduced-pressure environment. A representative wafer chuck provides improved control of the... | 12/17/2002 |
| 5952910 | Isolator device for arrester A device for connecting, and then isolating and disconnecting an arrester includes a non-conductive housing with two electrical terminals. The housing has opposite ends separated by an internal chamber. The terminals are mounted at the housing ends. A res... | 09/14/1999 |
| 5903427 | Arc containing device A device for containing an electrical discharge arc and holding the arc substantially captive until it is extinguished. The device comprises two spaced apart conductor systems (13 and 14) that are connected to points (23 and 24) of different voltage poten... | 05/11/1999 |
| 5781393 | Surge arrester A surge arrester which includes a pair of spaced metal electrodes and a semiconductor element interposed between the metal electrodes and in contact with at least one of the metal electrodes. The semiconductor element functions at least partially to bridg... | 07/14/1998 |
| 5708555 | Surge arrester having controlled multiple current paths An improved surge arrester includes metal oxide varistors in series with spark gap assemblies arranged such that the MOV elements conduct the low magnitude, steady-state current through the arrester along a path that is separate and distinct from the path... | 01/13/1998 |
| 5663864 | Surge absorber A discharge relay electrode is located between terminal electrodes of a gap-type surge absorber. In a microgap embodiment of the invention, a conducting film on a surface of an insulating tube is split by two circumferential gaps spaced apart longitudinal... | 09/02/1997 |
| 5610570 | Voltage non-linear resistor and fabricating method thereof A non-linear resistor having a high impulse withstanding ability is obtained by directly applying a crystallized glass to the side surface of a sintered body of a ZnO element, and then bake-attaching the crystallized glass to the side surface of the ZnO e... | 03/11/1997 |
| 5515231 | Thyristor valve arrester and DC power transmission thyristor valve using the same An object of the present invention is to provide a thyristor valve arrester capable of measuring leakage currents of arrester elements in a simple construction and a DC power transmission thyristor valve having it used therein. A multiple of laminated arr... | 05/07/1996 |
| 5436787 | Surge arrestor unit A three-terminal surge arrestor unit employs air gaps augmented with semiconductors to protect a circuit having two ungrounded conductors. Conductive electrodes and the semiconductors are mounted on a common axis in a sandwich arrangement and secured in f... | 07/25/1995 |
| 5325259 | Overvoltage protection for series capacitor equipment An overvoltage protective device for a series capacitor (C) has a main spark gap and a first auxilary spark gap, arranged adjacent thereto, for ignition of the main spark gap. A second auxiliary spark gap is arranged in association with the first auxiliar... | 06/28/1994 |
| 5214249 | Electrical assembly with end collars for coupling ends of a weathershed housing to the end fittings An electrical assembly, such as an insulator or a surge arrester, utilizing a pair of end collars for coupling an elastomeric weathershed housing to a pair of metallic end fittings, and for reducing electrical stress at the interface of the ends of the we... | 05/25/1993 |
| 5107242 | Voltage non-linear resistor for gapped lightning arrestors and method of producing the same An excellent voltage non-linear resistor for use in a gapped lightning arrestor having a composition containing 1 0.5-1.2 mole % of bismuth oxide calculated as Bi2 O3, 2 0.3-1.5 mole % of cobalt oxide calculated as Co2 O | 04/21/1992 |
| 4962440 | Surge arrester A surge arrester comprises a plurality of cylindrical arrester elements (11) of metal oxide varistor material which are arranged, with confronting end surfaces, between two end electrodes (13) in an elongated protective housing (10) which is resistant to ... | 10/09/1990 |
| 4860156 | Overvoltage protective circuit A trigger circuit for a spark gap chain with at least two series-connected spark gaps, of which at least one is provided with at least one trigger electrode, includes a resistor chain which is connected in parallel with the spark gap chain and comprises a... | 08/22/1989 |
| 4797778 | Gas discharge path For switching high voltages, high frequencies and at high numbers of switching actuations, a gas discharge structure is provided which is composed of a series circuit of two or more individual arresters which comprise electrodes of copper and which are fi... | 01/10/1989 |
| 4736269 | Voltage surge limiter with grounding assembly A protector module (30) for protecting the conductors of a telephone loop cludes a pair of protector assemblies (40-40') which are supported within a common housing (32). A gas tube voltage protection subassembly (42) of each protector assembly is connect... | 04/05/1988 |
| 4720760 | Electrical surge protection A mains electrical plug incorporates a zinc oxide non-linear resistor device (10) in the form of a circular zinc oxide disc having three electrode portions (2) provided on one face and contacting the earth, neutral and live pins (5) of the plug and a sing... | 01/19/1988 |
| 4686603 | Overvoltage arrester An overvoltage arrester having power connectors at its opposite ends is provided with an insulating housing that encloses a stack of coaxially arranged cylindrical varistors at least partially embedded in insulating material. An annular space is provided ... | 08/11/1987 |
| 4484247 | Nonfragmenting station arrester A lightning arrester of the station class is equipped with a ceramic housing protective heat shield liner formed of an ablative material capable of giving off a gas when subjected to a fault current arc. The evolved gas contributes to a rapid internal pre... | 11/20/1984 |
| 4463404 | Surge voltage arrester with shielding bodies enclosing a column of arrester elements A surge voltage arrester, with a column of arrester elements arranged in a housing and several shielding bodies enclosing the column, includes voltage controlling elements arranged between the shielding bodies. The size and type of fastening of the voltag... | 07/31/1984 |
| 4404614 | Surge arrester having a non-fragmenting outer housing A surge arrester including an outer elongated housing and an inner liner is disclosed herein. The outer housing is constructed of a material which will not break as a result of internal electrical arcing, specifically a relatively resilient, electrically ... | 09/13/1983 |
| 4369480 | Overvoltage arrester including a column of arrester elements and shielding therefor Disclosed is an overvoltage arrester in which the active part comprises a number of shielding elements with arrester elements fastened thereto in the interior thereof. The shielding elements along the inner circumference thereof have a circular depression... | 01/18/1983 |
| 4365282 | Overvoltage protector using varistor initiated arc Coaxial conductors are protected against electrical overvoltage by at least one element of non-electroded varistor material that adjoins each other varistor element and conductor with which it contacts. With this construction, overvoltage current initiate... | 12/21/1982 |
| 4352139 | Flexible connector for H.V. arrester A gapless arrestor assembly for a high voltage bushing including an insulating elastomeric housing having a bore formed in one portion thereof and a receptacle formed in another portion thereof and a surge arrester assembly positioned in the bore in said ... | 09/28/1982 |
| 4320436 | Secondary valve arrester A secondary valve arrester for protection of secondary electrical systems, comprises a housing having a lid and base portion, the latter of which includes a plurality of compartments each of which is dimensioned to receive a valve block and spark gap asse... | 03/16/1982 |
| 4282557 | Surge voltage arrester housing having a fragible section Surge voltage arresters are provided with a frangible housing to cause the housing to break at a predetermined section into a relatively few pieces upon varistor failure. The breaking of the housing deters excessive pressure buildup within the arrester.... | 08/04/1981 |
| 4228478 | Overvoltage arrester An overvoltage arrester wherein the arrester comprises an insulating housing which encloses a body of cast resin in which is embedded a voltage dependent resistor and a first connecting device, a portion of which protrudes from the resin body and extends ... | 10/14/1980 |
| 4161763 | Compact voltage surge arrester device A compact voltage surge arrester employs a miniature series gap electrode arrangement in series with a plurality of zinc oxide varistors. The series gap arrangement provides the use of zinc oxide varistors without auxiliary heat sinks.... | 07/17/1979 |
