| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 218089000 | Interposed non-conductor | 22 |
| 20100072175 | ELECTRICAL SWITCHING DEVICE HAVING A CONTACT PIECE WHICH CAN MOVE ALONG A MOVEMENT AXIS - An electrical switching device has a displaceable contact piece mounted on an encapsulated housing. The displaceable contact piece extends within and outside of the encapsulated housing. The displaceable contact piece is sealed gas-proof in relation to the encapsulated housing. For forming a gas-proof transition, first and second sealing elements are provided, which, as axial sealing elements, are alternately pressed against the encapsulated housing by peripheral collars of the displaceable contact piece. A third sealing element is provided for sealing the displaceable contact piece in a radial direction. | 03-25-2010 |
| 218090000 | Gas-evolving chamber | 5 |
| 20130213937 | GAS INSULATED SWITCHGEAR - A gas insulated switchgear includes a vacuum interrupter having a movable contact and a fixed contact in vacuum. The movable contact is on one side of a movable conductor that passes through a bellows. An insulating rod is coupled to the other side of the movable conductor that passes through the bellows. The insulating rod and the other side of the movable conductor are placed in an insulator. The vacuum interrupter, the insulating rod, and the insulator are disposed in a gas tank. An operating mechanism is disposed on a movable side end portion of the gas tank and connected to the insulating rod. An inner circumferential side space of the bellows, an internal space of the insulator, and an internal space of the operating box are in communication with each other; and pressure in these spaces is lower than pressure in the gas tank. | 08-22-2013 |
| 20140346145 | MIXTURE OF HYDROFLUOROOLEFINE AND HYDROFLUOROCARBIDE TO IMPROVE THE INTERNAL ARC RESISTANCE IN MEDIUM AND HIGH VOLTAGE ELECTRIC APPARATUS - The invention relates to the use of a mixture of a hydrofluoroolefin and a hydrofluorocarbon, optionally combined with another fluorinated gas, as an electrical insulation medium and/or an electric arc extinguishing medium in a medium-voltage electrical apparatus. The invention also relates to a medium- or high-voltage electrical apparatus in which such a mixture provides electrical insulation and/or electric arc extinguishing. | 11-27-2014 |
| 20150053647 | GAS CIRCUIT BREAKER - A piston rod includes a large-diameter portion that is formed on the side of a movable contact, and a small-diameter portion that is formed on the side of an insulating operation rod relative to the large-diameter portion, and that is formed with an outer diameter smaller than the inner diameter of an inner peripheral surface of an insulating cylindrical member. The insulating cylindrical member includes a cylindrical portion that is interposed between the outer peripheral surface of the small-diameter portion and the inner peripheral surface of the insulating operation rod, a bottom portion that is arranged opposed to the distal end of the small-diameter portion, and a through hole through which a coupling pin is inserted through the piston rod and the insulating operation rod. | 02-26-2015 |
| 20150294819 | CIRCUIT INTERRUPTERS WITH AIR TRAP REGIONS IN FLUID RESERVOIRS - Circuit interrupting devices, power distribution switchgear assemblies, and pole units for power distribution are provided. A circuit interrupting device includes a solid insulation housing, a disconnect, a window, and an insulating fluid. The solid insulation housing defines a first external opening and a first cavity extending into the solid insulation housing from the first external opening. The disconnect has a moving contact in selective engagement with a stationary contact in the first cavity. The window is secured to the solid insulation housing at the first external opening. The insulating fluid is disposed within the first cavity. The window, the solid insulation housing, or a combination thereof is configured to form a trap region that is in fluid communication with the first cavity and is configured to trap air bubbles in the insulating fluid. | 10-15-2015 |
| 20150357137 | ARC-EXTINGUISHING INSULATION MATERIAL MOLDED PRODUCT AND GAS CIRCUIT BREAKER INCLUDING THE SAME - The present invention relates to an arc-extinguishing insulation material molded product provided in the vicinity of a contact point between contactors in a gas circuit breaker. The arc-extinguishing insulation material molded product includes a polymer which contains a carbon-oxygen bond in the main chain, and in which a part of or all of terminal atoms are non-hydrogen atoms. | 12-10-2015 |
| 218091000 | Liquid | 8 |
| 20130062314 | DIELECTRIC LOADED FLUIDS FOR HIGH VOLTAGE SWITCHING - This disclosure relates to methods and systems to reduce high voltage breakdown jitters in liquid dielectric switches. In particular, dielectric liquids have been produced that contain a suspension of nanoparticles and a surfactant to reduce the breakdown jitter. In one embodiment, the suspended nanoparticles are Barium Strontium Titanate (BST) nanoparticles. | 03-14-2013 |
| 20150122780 | Commutating Circuit Breaker - A commutating circuit breaker that progressively inserts increasing resistance into a circuit via physical motion of a shuttle that is linked into the circuit by at least one set of sliding electrical contacts on the shuttle that connect the power through the moving shuttle to a sequence of different resistive paths with increasing resistance; the motion of the shuttle can be either linear or rotary. At no point are the sliding stator electrodes separated from the matching stationary stator electrodes so as to generate a powerful arc, which minimizes damage to the sliding stator electrodes. Instead, the current is commutated from one resistive path to the next with small enough changes in resistance at each step that arcing is suppressed. The variable resistance can either be within the moving shuttle, or the shuttle can comprise a commutating shuttle that moves the current over a series of stationary resistors. | 05-07-2015 |
| 218092000 | Operating mechanism structure or arrangement | 2 |
| 218093000 | Piston | 1 |
| 20150027986 | FLEXIBLE DIELECTRIC MATERIAL FOR HIGH VOLTAGE SWITCH - An electrical switch includes a tubular housing having a conductor receiving end and an operating end opposite the conductor receiving end. The tubular housing also includes a conductive interface positioned intermediate the conductor receiving end and the operating end. An operating rod extends through the operating end toward the conductor receiving end. The operating rod is moveable between a first position to engage the electrical switch and a second position to disengage the electrical switch. A gelatinous dielectric material is provided within a portion of the tubular housing, and around the operating rod, in the operating end to prevent voltage from the conductive interface from arcing to the operating end. The gelatinous dielectric material is configured to deform to maintain contact with the operating rod in the first position and the second position. | 01-29-2015 |
| 218094000 | Delay means (e.g., dashpot) | 1 |
| 20150027987 | SAFETY SYSTEM FOR HIGH VOLTAGE NETWORK GROUNDING SWITCH - The present invention is directed to a safety system integrated into a liquid-insulated high voltage network grounding switch, including modifications to the switch structure to provide an arrangement that is more efficiently installed with greater precision than found in conventional arrangements. The result is a switch assembly that adheres to updated IEEE/ANSI Standards, while still fitting into existing vault space meant to accommodate earlier switch gear. | 01-29-2015 |
| 218097000 | Housing or tank structure | 3 |
| 20150311016 | Integrated Particle Trap In A Tank Of A Dead Tank Circuit Breaker - A tank for a dead tank circuit breaker includes a body having an interior volume defined by an interior surface. A particle trap structure includes a pair of recessed surfaces in a bottom portion of the interior surface. Each recessed surface is disposed in spaced relation with respect to the interior surface so as to define a channel. A raised surface is spaced from the recessed surfaces and separates the recessed surfaces. The channels are constructed and arranged to trap foreign particles in the interior volume, with the raised surface being constructed and arranged to raise an electric field in the interior volume to be above the channels so as to eliminate electrical activity that would affect the particles in the channels. | 10-29-2015 |
| 20150311017 | Tank Mounting Structure For Dead Tank Circuit Breaker - Mounting structure is provided for mounting a tank to support structure. The tank has a flange extending from a body thereof. The mounting structure includes at least a pair of first bores extending into the flange in a first direction. At least a pair of second bores. Each second bore extends into the flange in a direction generally transverse with respect to an associated first bore so that each second bore communicates with the associated first bore. A pin is disposed in each of the second bores. Each pin has a threaded pin bore that aligns axially with the associated first bore. A bolt is disposed through a bolt hole in the support structure, into an associated first bore and in threaded engagement with the threaded pin bore of an associated pin so as to secure the tank to the support structure. | 10-29-2015 |
| 20150325387 | ON-LOAD TAP CHANGER WITH CONNECTION TO OIL RESERVOIR OF A TRANSFORMER - Disclosed is an on-load tap changer comprising a connection to an insulating liquid of a transformer. The on-load tap changer in a housing ( | 11-12-2015 |
| 218116000 | Puffer-piston | 1 |
| 20090090697 | INTERRUPTING CHAMBER OF A CIRCUIT-BREAKER HAVING TWO COMPRESSION VOLUMES - A current interrupting chamber comprising a moving assembly movable axially between a start position and an end position of an operation of opening the circuit-breaker, and comprising:
| 04-09-2009 |
| 218117000 | Solid | 8 |
| 20100032411 | INTERRUPTING CHAMBER WITH A FIELD DISTRIBUTOR CYLINDER FOR HIGH-VOLTAGE OR MEDIUM-VOLTAGE CIRCUIT BREAKERS - An insulating tube ( | 02-11-2010 |
| 20120152903 | Breaking Device with Arc Breaking Shield - A breaking device with an arc breaking shield comprising at least one stationary contact collaborating with a movable contact supported by a contact-holder arm and an actuating device of the movable contact in a casing. | 06-21-2012 |
| 20130026138 | GAS INSULATED SWITCHGEAR - A gas insulated switchgear includes: an upper conductor; a lower conductor; a movable contact provided in the upper conductor; a fixed contact fixedly provided in the lower conductor; a moving side tulip contact provided in the movable contact; a moving side shield fixed to the upper conductor; a fixed side tulip contact provided in the fixed contact; a fixed side shield fixed to the lower conductor; and an insulating screen unit installed to selectively block the opening end of the moving side shield and covering an end of the movable contact when the movable contact is separated from the fixed contact. | 01-31-2013 |
| 20140048513 | CIRCUIT BREAKER - It is possible to extend an arc as far as an arc extinguishing chamber without increasing an opening distance of a movable contact, and to increase an arc voltage, thus improving the breaking performance, without changing a switching mechanism or increasing a size of the external form of a circuit breaker. A circuit breaker includes a breaking portion having a fixed contact and movable contact, and an arc extinguishing chamber disposed so as to enclose the breaking portion. An insulating arm made of an insulator is provided to be capable of advancing into and withdrawing from the space between contact points of the fixed contact and movable contact. Further, the insulating arm advances to a position between the contact points when the movable contact carries out an opening operation, and withdraws from the space between the contact points when the movable contact carries out a closing operation. | 02-20-2014 |
| 20140110377 | Electric Switch for High Currents, in Particular With a High Short Circuit Withstand Performance in the KA-Range - The present invention relates to an electric switch having a first contact element, an insulating element, and a second contact element. The first contact element includes a first contact surface on which the insulating element is disposed. The second contact element includes a conductive member moveable relative to the first contact element and the insulating element. | 04-24-2014 |
| 20140166621 | COMPACT BUS BAR ASSEMBLY, SWITCHING DEVICE AND POWER DISTRIBUTION SYSTEM - A contact bus bar assembly for supplying power to a load, and further pertains to a switching device which can be connected to such a compact bus bar assembly, and to a power distribution system. The bus bar assembly includes at least two electrically conductive tracks which are at least partly covered by an electrically insulating cover. An outer surface of said insulating cover is provided with a plurality of ribs arranged in a region connecting pin terminals. The switching device may additionally comprise a separating element provided with a plurality of second ribs. | 06-19-2014 |
| 20140367361 | GAS CIRCUIT BREAKER - A gas circuit breaker includes: a pair of electrodes provided so as to be able to come in contact with and separate from each other; and an insulating material that is placed so as to generate a decomposition gas in response to a direct or indirect action from an arc occurring between the pair of electrodes when a current is broken, wherein the decomposition gas generated from the insulating material when the current is broken is configured to be utilized for extinguishing the arc, and wherein an ablative material that does not include hydrogen atoms but has a carbon-oxygen bond in a main chain or ring part is used as the insulating material. | 12-18-2014 |
| 20150027988 | Green Switchgear Apparatuses, Methods and Systems - This disclosure relates to switchgear equipment for electrical power systems. A switchgear comprises a switchgear body housing, having an upper boot and a lower boot, the upper boot having an insulating material and the lower boot having an insulating material, a vacuum interrupter having at least one stationary electrical contact, a moveable contactor coupled to a moveable electrical contact, and at least two bushings having conductor material passing therethrough, the switchgear further comprising at least one of a bushing boot having at least one of a helical groove and an array of heat-removal fins, a flexible, insulating cover enclosing at least a portion of the vacuum interrupter and an adjacent bushing, a helical groove in the upper boot, and a finned connector constrained within a channel in the moveable contactor. | 01-29-2015 |
