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| Number | Title | Issue Date |
| 8089745 | Overvoltage protection element An overvoltage protection element (1) includes a housing (2), two terminals (3, 4) for electrical connection of the overvoltage protection element (1) to current or signal paths to be protected, and an arrester (5, 6), including a ... | 01/03/2012 |
| 8077442 | Lightning arrester and method of manufacturing and assembling the same A pair of electrodes sandwiches a serial unit that includes a nonlinear voltage resistor block and a compression spring, which is coupled by a plurality of insulating rods. Each of the electrodes has a plurality of insulating-rod inserting holes and a plurality of f... | 12/13/2011 |
| 8018707 | High amperage surge arrestors Embodiments of the present invention include a T-body elbow arrestor having an elbow body. A surge arrestor is positioned in one portion of the elbow body extending from an intermediate portion of another portion of the elbow body. An end cap assembly is coupled to ... | 09/13/2011 |
| 8009402 | Surge arrester with a cage design, and a production method for it 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)... | 08/30/2011 |
| 7952848 | Incorporating electrostatic protection into miniature connectors Electrostatic discharge protection, also known as ESD protection, is provided in the form of a discrete array with a voltage variable material (VVM) or a VVM device. The array is fabricated with a common electrode for connection to ground, and one or more electrodes... | 05/31/2011 |
| 7821759 | Surge absorption circuit A surge absorption circuit according to an embodiment comprises (a) an input terminal, (b) an output terminal, (c) a common terminal, (d) a mutual inductive element having a first inductive element and a second inductive element which are electromagnetically coupled... | 10/26/2010 |
| 7729099 | Surge arrester A surge arrester has a discharge current path. The discharge current path is surrounded by an insulating sleeve. The insulating sleeve has at least one area that is optically transparent. ... | 06/01/2010 |
| 7656639 | Retainer for surge arrester disconnector Retainers for movable surge arrester disconnectors to prevent relative displacement of the disconnectors with respect to the arrester within predetermined limits. ... | 02/02/2010 |
| 7646578 | Filter circuit and filter device A filter circuit has first and second varistors, a resistance, an input terminal, an output terminal, and a ground terminal. The resistance is connected between the first and second varistors. The input terminal is connected to a junction between the first varistor ... | 01/12/2010 |
| 7639470 | Varistor element A varistor element comprises a varistor element body, a plurality of inner electrode pairs, a connecting conductor, and a plurality of terminal electrodes. The varistor element body has first and second main faces opposing each other. Each inner electrode pair has f... | 12/29/2009 |
| 7612976 | Transient voltage protection circuit boards and manufacturing methods Circuit boards including embedded transient voltage protection. ... | 11/03/2009 |
| 7606018 | Surge absorbing circuit A surge absorbing circuit has a substrate on which a first conductor, a second conductor, and a third conductor are placed, and a surge absorber having a first terminal and a second terminal. The first conductor and the second conductor are mutually coupled in a pol... | 10/20/2009 |
| 7593209 | MOV failure mode identification A surge protector includes a thermal fuse, a metal oxide varistor electrically connected in series relation to the thermal fuse, and a detection network electrically connected in parallel relation to the thermal fuse and the metal oxide varistor. A first indicating ... | 09/22/2009 |
| 7586729 | Surge arrester having a discharge element A surge arrester has a diverter element with a shielding element that increases the creepage path. The shielding element includes at least one shield. The shielding element is configured from an electrically insulating material and the diverter element forms a disch... | 09/08/2009 |
| 7522399 | Surge arrester A surge arrester including a stack of a plurality of cylindrical varistor blocks that are arranged one after the other in the axial direction of the varistor blocks between an upper end electrode and a lower end electrode. Arranged around the stack are clamping memb... | 04/21/2009 |
| 7492566 | Low resistance transient blocking unit A transient blocking unit (TBU) having reduced series impedance is provided. A TBU includes two or more depletion mode transistors arranged to provide a low series impedance in normal operation and a high series impedance when the input current exceeds a predetermin... | 02/17/2009 |
| 7483252 | Circuit protection device A voltage suppression device for suppressing voltage surges in an electrical circuit, comprised of a voltage sensitive element having a predetermined voltage rating, the voltage sensitive element increasing in temperature as voltage applied across the voltage sensit... | 01/27/2009 |
| 7453681 | Metal oxide varistor with a heat protection A metal oxide varistor integrally formed with a heat protection structure that will automatically go to open circuit in conditions of overheating due to sustained over-voltages. The metal oxide varistor integrally formed with a heat protection structure has a body, ... | 11/18/2008 |
| 7433169 | Overvoltage protection devices including wafer of varistor material An overvoltage protection device includes first and second electrically conductive electrode members, a varistor member formed of a varistor material and electrically connected with each of the first and second electrode members, and an electrically conductive, melt... | 10/07/2008 |
| 7400485 | Surge absorber A surge absorber has a first terminal electrode, a second terminal electrode, a third terminal electrode, an inductor portion, a surge absorbing portion, and a resistor portion. The inductor portion has a first internal conductor and a second internal conductor mutu... | 07/15/2008 |
| 7397646 | Surge absorption circuit A surge absorption circuit according to an embodiment comprises (a) an input terminal, (b) an output terminal, (c) a common terminal, (d) a mutual inductive element having a first inductive element and a second inductive element which are electromagnetically coupled... | 07/08/2008 |
| 7369390 | Gas-insulated surge arrester The surge arrester contains a tubular encapsulation (1) of electrically conductive material that is filled with an insulating gas, an insulator (17) that is held on the encapsulation (1) and serves for supporting a current conductor (R) that is ... | 05/06/2008 |
| 7351082 | Electrical connector including silicone elastomeric material and associated methods An electrical connector may include a connector body having a passageway therethrough. The connector body may include a first layer adjacent the passageway, a second layer surrounding the first layer and comprising an insulative silicone elastomeric material, and a ... | 04/01/2008 |
| 7312970 | Low cost surge protection A motor drive for an electric machine includes a live line, a second line, and a ground line. A surge protector includes a first varistor and a gas discharge tube (GDT) that is non-conductive below a trigger voltage and that is conductive above the trigger voltage. ... | 12/25/2007 |
| 7312971 | Surge absorption circuit and laminated surge absorption device A surge absorption circuit of one embodiment comprises an input terminal; an output terminal; a common terminal; a first surge absorption element and a second surge absorption element which are connected in series between the input terminal and the output terminal; ... | 12/25/2007 |
| 7283032 | Static electricity countermeasure component It is possible to realize an electrostatic discharge protection component having a very small electrostatic capacity suited to a high-frequency equipment and comprising a ceramic insulating substrate, a varistor unit composed of a varistor layer and an internal elec... | 10/16/2007 |
| 7272885 | Method of manufacturing surge arrestor The present invention relates to a method of manufacturing surge arrestors, the method including stacking varistors; and forming a coating of composite material on the stack. Between these steps, also included is placing a bead of flexible, adhesive, and dielectric ... | 09/25/2007 |
| 7265961 | Lightning protection device and method An air terminal for lightning protection includes a central rod and a curved conductive surface around the central rod. The central rod includes a tip mount for receiving a tip from a tip set that includes a plurality of tips that impart different electrical charact... | 09/04/2007 |
| 7256978 | Gapped ground safety device A gapped ground safety device is provided to protect workers on de-energized underground distribution cable from ground faults or accidental energization. The device comprises a combination precision gap and an MOV surge arrester. ... | 08/14/2007 |
| 7251114 | Overvoltage protecting circuit in a steady state The invention relates to an overvoltage protection circuit comprising an MOV (Metal Oxide Varistor) voltage limiting device (3) which is disposed in series with a GDT (Gas Discharge Tube) voltage limiting device (4). The invention is characterized in t... | 07/31/2007 |
| 7214338 | Method and device for producing an electric insulator made from plastic A device including, and a method for producing, an electric insulator made of plastic, the insulator having a centrally arranged core made of glass fiber reinforced plastic, and having a plurality of insulation screens arranged coaxially around the core in an offset... | 05/08/2007 |
| 7212389 | Over-voltage protection system An electrical device includes a body, an electrical contact having a first end for electrically coupling to an electrical apparatus and a second end within the body, and a conductor electrically coupled to the second end of the electrical contact. The electrical dev... | 05/01/2007 |
| 7202770 | Voltage variable material for direct application and devices employing same The present invention provides overvoltage circuit protection. Specifically, the present invention provides a voltage variable material (“VVM”) that includes an insulative binder that is formulated to intrinsically adhere to conductive and nonconductive surfaces... | 04/10/2007 |
| 7188265 | Method of recognizing a card using a select signal during a determination mode and switching from low to high resistance after the determination A memory card is provided in which power consumption is reduced by the pull-up resistor of an input terminal and a misoperation induced by the pull-down resistor of a host apparatus is prevented. The memory card has a select terminal connected to the pull-up resisto... | 03/06/2007 |
| 7183891 | Direct application voltage variable material, devices employing same and methods of manufacturing such devices A voltage variable material (“VVM”) including an insulative binder that is formulated to intrinsically adhere to conductive and non-conductive surfaces is provided. The binder and thus the VVM is self-curable and applicable in a spreadable form that dries before... | 02/27/2007 |
| 7158041 | Electrical protection device and method for a communication circuit A protection device for a communication circuit that includes a sensor monitoring a protection device parameter and an indication module coupled to the sensor. The indication module generates an indication output as a function of the protection device parameter indi... | 01/02/2007 |
| 7154728 | Active part for a surge arrester The active part which is provided for use in a surge arrester includes two connecting fittings, which are arranged along an axis at a distance from one another, at least one cylindrical varistor column, which is provided between the two connecting fittings, and at l... | 12/26/2006 |
| 7154726 | Pluggable electrical apparatus, in particular surge arrester The pluggable electrical apparatus, formed in particular as a surge arrester (A), has an axially symmetrical housing (1) with a housing axis (7) running in the plugging direction, a flange (5) for fastening the apparatus housing (1) on a ... | 12/26/2006 |
| 7154061 | Interrupter assembly for a circuit breaker A preferred embodiment of an interrupter assembly for a circuit breaker includes a first contact, a conductor, and a second contact mounted on the conductor. The second contact and the conductor are movable in relation to the first contact between a first position w... | 12/26/2006 |
| 7129693 | Modular voltage sensor A voltage sensor is described that consists of a plurality of identical series-connected sections, where each section is comprised of an arrangement of impedance elements. The sensor is optimized to provide an output ratio that is substantially immune to changes in ... | 10/31/2006 |
