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| Number | Title | Issue Date |
| 7343137 | Circuit, switching module comprising the same, and use of said switching module The invention relates to a circuit comprising an antenna input (1), a signal input (2) and a signal output (3), and a switching unit (4), wherein the antenna input (1) is connected to a first protection device (6) against el... | 03/11/2008 |
| 7078643 | Capacitor switch with internal retracting impedance contactor A capacitor switch including a power contactor and an impedance contactor located within a relatively slender container filled with dielectric gas. The container may be a “dead tank” or an insulator. For the insulator configuration, the switch also includes a co... | 07/18/2006 |
| 7026009 | Evaluation of chamber components having textured coatings A component for a substrate processing chamber comprises a structure having a textured coating with surface grains. The component is evaluated by directing a beam of electrons onto the textured coating of the component to cause at least some of the electrons to be b... | 04/11/2006 |
| 6927355 | Circuit breaker The invention relates to a circuit breaker, preferably for high or medium voltage. The movable conact of each breaker pole is connected, via mechanical means for transmitting movement, to a movable part of an electric motor (6). The movable contact and the me... | 08/09/2005 |
| 6838631 | Power use circuit breaker and electrical circuit arrangement for electric power generation plant A power use circuit breaker includes an arc generating switching unit which adds an electrical resistance in a circuit during current interruption to attenuate a current to be interrupted, a vacuum bulb which is electrically connected in series with the arc generati... | 01/04/2005 |
| 6284993 | Ball-locked mechanism for inserting a closure resistor A mechanism for inserting a closure resistor serves for an electrical switch which contains a semi-moving arcing contact secured to a metal rod connected to the resistor. The mechanism includes a metal tube mounted to slide on the rod and carrying fingers... | 09/04/2001 |
| 6242707 | Arc quenching current limiting device including ablative material A current limiting device for protecting electrical circuits has a case and a pair of separable electrodes disposed within the case. Each electrode has a plurality of openings with an ablative member abutting the openings at an outer surface of the electr... | 06/05/2001 |
| 6201204 | Closure resistor assembly for high voltage electrical gear A closure resistor assembly for high voltage electrical gear. The assembly includes a multiplicity of resistive electrical components aligned in a row along an axis, and a mechanism which exerts a compression force on the electrical components along the a... | 03/13/2001 |
| 6049049 | Surge arrester A surge arrester for high system voltages is provided. The arrester comprises an elongated column composed of a plurality of coaxially arranged valve units. The column is mechanically divided into an upper and a lower column part, and the two column parts... | 04/11/2000 |
| 5841614 | High voltage circuit breaker with insertion of resistance on closure A high voltage circuit breaker with insertion of resistance on closing, wherein the resistance is inserted by a fixed insertion electrode co-operating with the end of the moving main contact, the blast nozzle and the arcing contact of the moving assembly ... | 11/24/1998 |
| 5814782 | Rower circuit-breaker having a closing resistor The power circuit-breaker is provided with at least one arcing chamber which extends along a central axis and has at least one power interruption point with at least one contact which is moved by a drive. A closing resistor is connected in series with the... | 09/29/1998 |
| 5742017 | Circuit-breaker provided with a closure resistance having an insertion assembly A circuit-breaker including a moving assembly having a moving main contact (14) electrically connected to a first terminal (2A), a fixed assembly having a fixed arcing contact electrically connected to a resistance (5) which is connected to a second termi... | 04/21/1998 |
| 5734140 | Gas insulated high voltage circuit breaker including tulip contact assembly and insertion resistor A circuit breaker includes a tank grounded and filled with an insulating gas, a first electrical series-connected section having a main conductor and a main breaking section, and a second electrical series-connected section having a resistor and an advanc... | 03/31/1998 |
| 5717184 | High-voltage circuit-breaker that inserts a resistance on closure The present invention relates to a high-voltage circuit-breaker including a casing that is filled with a dielectric gas and that contains a first arcing contact and a second arcing contact, which arcing contacts are mounted to move in opposite directions ... | 02/10/1998 |
| 5668360 | Circuit-breaker having two interrupting chambers per pole with drive mechanism and drive rods isolating insert capacitors A circuit-breaker having two interrupting chambers per pole, the chambers being disposed in a T or V configuration at the end of a column provided at its base with a control system for operating a drive rod, each chamber containing a moving assembly conne... | 09/16/1997 |
| 5604340 | Gas insulated switchgear insertion resistor and main contacts operating mechanism having time delay feature A gas circuit breaker having a resistance circuit breaking portion connected in parallel with a main circuit breaking portion includes a main circuit breaking portion actuating mechanism and a resistance circuit breaking portion actuating mechanism. The r... | 02/18/1997 |
| 5567924 | Circuit breaker with parallel resistor A circuit breaker with parallel resistor which can satisfy contradictory requirements to induce a preliminary discharge at the time of closing action and to maintain a high interelectrode insulation at the time of interrupting action has been provided in ... | 10/22/1996 |
| 5509558 | Metal oxide resistor, power resistor, and power circuit breaker A metal oxide resistor for suppressing variations in resistivity in use in an atmosphere at a high temperature or humidity. Such a metal oxide resistor includes a sintered body in which carbon particles having an average grain size of 1 μm or less exist ... | 04/23/1996 |
| 5495083 | Electric switch device with separable contacts including fixed contact mounted current limiter and shunt conductor An electrical switch device with separable contacts is provided with a shunt conductor adapted to receive one end of the arc that is struck when the contacts separate after it has jumped a dielectric gap. The shunt conductor determines an interim arc curr... | 02/27/1996 |
| 5484972 | High-voltage gas sealed switchgear including series connected switches and closing resistor A high-voltage switching device for gas-insulated switchgear has a gas-filled metal housing, a conducting path in the metal housing and at least two series-connected switching points with movable contact pieces which are actuated by a common drive mounted... | 01/16/1996 |
| 5457294 | UHV breaker provided with resistances A resistance-provided UHV breaker includes a tank, a main contact unit, a resistance unit, and a resistance contact unit. The main contact unit includes plural main contacts arranged in the axial direction of the tank. The resistance unit includes plural ... | 10/10/1995 |
| 5451731 | Circuit breaker and driving mechanism thereof In a double-break type circuit breaker having resistor contacts which are to be connected in parallel with main contacts in not only closing operation but also breaking operation, the resistor contacts are opened by a force due to loading of elastic membe... | 09/19/1995 |
| 5428195 | Current limiter unit for molded case circuit breakers A self-contained current limiter unit allows lower short-circuit-rated circuit breakers to be utilized within industrial applications. The unit is electrically-connected in series with the circuit breakers and the protected load to limit the short circuit... | 06/27/1995 |
| 5424504 | Resistor-provided UHV breaker having delaying/operating mechanism for making and breaking main contacts and resistor contacts A resistor-provided UHV breaker has a tank sealing an insulating gas therein, a main contact unit located in the tank, a resistor unit connected parallel to the main contact unit, a resistor contact unit located in the tank, a main contact making/breaking... | 06/13/1995 |
| 5401923 | Resistor-provided UHV breaker A resistor-provided UHV breaker includes a tank, a main contact unit, a resistor unit, a resistor contact unit, support members, and a displacement absorbing system. The support members are arranged between the main contact and the resistor unit to suppor... | 03/28/1995 |
| 5391930 | Circuit breaker with parallel resistor A circuit breaker with a parallel resistor which fulfills with a simple structure incompatible requirements for a resistance circuit making contact with regard to maintenance of the dielectric strength and prearcing characteristic between electrodes. A re... | 02/21/1995 |
| 5373129 | Power circuit breaker and power resistor A compact power circuit breaker having a large breaking capacity and stable breaking performance by using a compact closing resistor unit having high performance. The power circuit breaker includes a main switch arranged in a current path, an auxiliary sw... | 12/13/1994 |
| 5353186 | Reactor switch The reactor switch is provided for switching on and off a reactor (2) in a multiphase electrical high-voltage network. It has switch poles (3) which are arranged phase-by-phase between the reactor (2) and a part of the network containing, a high-voltage l... | 10/04/1994 |
| 5304760 | Ultra-high-tension circuit-breaker The present invention relates to an ultra-high-tension interrupting chamber comprising a main chamber including an insulating case containing permanent contacts, arcing contacts and two closing resistors inserted by means of semi-moving "make switch" devi... | 04/19/1994 |
| 5302784 | Circuit breaker inertia contact assembly for resistance insertion during opening and closing operations An inertia contact designed to co-operate with a contact in series with a component, such as a resistor or a varistor, is disposed in the interrupting chamber of a circuit-breaker so as to be inserted in parallel with the contacts of the circuit-breaker f... | 04/12/1994 |
| 5276285 | High rupture capacity circuit-breaker A high-voltage circuit-breaker has an interrupting chamber comprising a gas-tight cylindrical casing filled with a gas having good insulative properties such as sulfur hexafluoride. The casing contains a fixed permanent contact, a fixed arc contact and a ... | 01/04/1994 |
| 5262605 | Surge-limiting circuit breaker A surge limiting circuit breaker has, for each phase, at least one interrupting chamber constituted by a gastight insulating enclosure filled with a gas having high dielectric strength. The enclosure contains fixed and moving main contacts and fixed and m... | 11/16/1993 |
| 5254816 | Power circuit breaker and power resistor According to this invention, there is disclosed a compact power circuit breaker having a large breaking capacity and stable breaking performance due to a compact closing resistor unit having high performance. The power circuit breaker includes a main swit... | 10/19/1993 |
| 5245145 | Modular closing resistor A modular closing resistor assembly can be added in line with the interrupter assemblies of an extra high voltage circuit breaker and has a relatively short length. The resistor element consists of two stacks of disks which are disposed side by side and a... | 09/14/1993 |
| 5241294 | Varistor and resistor device for the interrupting chamber of circuit breaker A varistor and resistor device for incorporating in the interrupting chamber of a dielectric gas circuit breaker, the varistor and resistor components being connected in series and being housed in an insulating tube. The varistor components and the resist... | 08/31/1993 |
| 5225642 | Disconnecting switch In a disconnecting switch having a current-breaking duty, a stationary arc contact (18, 38) is held via a resistor (21, 41), and an end part of the stationary arc contact is arranged to engage with a hole (16c) formed in a movable contact (16) which is al... | 07/06/1993 |
| 5198630 | Resistance insertion type circuit-breaker A high-voltage circuit-breaker comprises a first insulative support column carrying a first current terminal and a pivoting cut-off arm provided with a first contact. An insulative column rotates to maneuver the cut-off arm. A second insulative support co... | 03/30/1993 |
| 5170023 | Circuit breaker with varistor-assisted interruption A circuit breaker comprising, for each pole, at least one interrupting chamber having fixed contacts and moving equipment including a moving contacts, and in parallel with each interrupting chamber series circuit comprising a varistor and a switch, said s... | 12/08/1992 |
| 5164559 | Circuit breaker with an incorporated varistor An SF6 circuit breaker having a varistor incorporated in line with its interrupting chamber in which insertion of the varistor on opening and closing is performed by coaxial translation of two electrodes outside and around the main contacts.... | 11/17/1992 |
| 5136451 | Current limiter A fault current limiter in which a resistor is inserted by a running arc. The arc is allowed to burn in a commutating unit until the current zero-crossing. Upon the passage through zero the arc is extinguished and the current is commutated to a shunt resi... | 08/04/1992 |
