| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 218057000 | Puffer piston | 25 |
| 20090134124 | Buffering mechanism for gas circuit breaker - A buffering mechanism for a gas circuit breaker includes a center piece which includes two protrusions extending from two ends thereof and two match surfaces are defined in two opposite sides of the center piece. Two side boards each have a pivot hole and a slot defined therethrough, the two protrusions of each end of the center piece are pivotably engaged with the pivot hole and the slot respectively. A plurality of impact plates are engaged with the two match surfaces of the center piece. When the impact plates are hit by the two links of the Y-shaped link mechanism of the gas circuit breaker at different times, the center piece is pivoted along the slots to absorb impact forces from the two links. | 05-28-2009 |
| 20130168357 | PUFFER-TYPE GAS CIRCUIT-BREAKER - A puffer-type gas circuit-breaker having improved interruption performance and dielectric performance, comprising: a partition wall provided in a stationary cylinder on the moving side of the circuit-breaker to form an intra-stationary cylinder space, a mechanical puffer chamber provided adjacent to one flange of the partition wall and a hot gas exhaust chamber provided on the same side as another flange of the partition wall, wherein the stationary cylinder has gas inlet holes communicated with the intra-stationary cylinder space and formed on one side relative to a virtual plane that bisects the stationary cylinder in a radial direction, gas outlet holes communicated with the intra-stationary cylinder space, and hot gas exhaust openings communicated with the hot gas exhaust chamber, further communicated with the puffer shaft flow hole after an arc is generated and formed in radial directions of the stationary cylinder and on the other side relative to the virtual plane. | 07-04-2013 |
| 20140069892 | MOVING SEAL WITH ARC CREEPAGE SURFACE FOR AN AIR CIRCUIT BREAKER - A moving seal for an air circuit breaker provides an arc creepage surface that is positioned between a pair of separable contact assemblies when the moving seal is fit into an inlet of the arc chamber. The arc creepage surface has a surface contour that increases a length of an arc travel path between the separable contact assemblies, relative to a straight line distance between of separable contact assemblies. | 03-13-2014 |
| 20150060408 | Wear-Resistant Material, Method for Producing the Same, Puffer Cylinder and Puffer-Type Gas Circuit Breaker - The present invention includes a wear-resistant material including: a base material formed of pure aluminum or an aluminum alloy having a projection, and a depression in a pit-like shape on a surface thereof; and a coat including a dehydrate of a hydrated oxide of aluminum, the coat being formed on a surface of the base material. Further, the present invention including a method for producing a wear-resistant material including the steps of: forming a hydrated oxide coat of aluminum on a surface of the base material by a chemical conversion coating; and heating the hydrated oxide coat. Further, the present invention also includes a puffer cylinder and a puffer-type gas circuit breaker applied to the above wear-resistant material. | 03-05-2015 |
| 20160049269 | DISCONNECTING SWITCH UNIT - A disconnecting switch unit or isolating switching device includes a first contact piece and a second contact piece which are movable relative to each other and between which a disconnection or isolation zone is formed when the pieces are separate. A compression device has a compression chamber accommodating a fluid. The compression chamber protrudes at least temporarily into the disconnection or isolation zone. | 02-18-2016 |
| 218059000 | With gas blast means | 9 |
| 20080290069 | Interrupting Chamber Having Two Compression Chambers - A current-interrupting chamber ( | 11-27-2008 |
| 20150008214 | HIGH VOLTAGE GAS CIRCUIT BREAKER - A high voltage gas circuit breaker, comprises: a fixed unit including a fixed arc contactor and a fixed contactor; and a movable unit including a movable arc contactor and a movable contactor, and configured to selectively contact or be separated from the fixed unit, and wherein the movable unit comprises: a fixed cylinder; a compression cylinder slidably-installed in the fixed cylinder; a movable rod penetratingly-coupled to the compression cylinder, and configured to transmit an adjusting force of an operator; a pressing member installed on an inner bottom part of the compression cylinder; and a compression plate supported by the pressing member, and up-down moving in the compression cylinder by a pressure of an expansion chamber. | 01-08-2015 |
| 20150294820 | SELF-BLAST CIRCUIT BREAKER REUSING ARC HEAT - The present disclosure relates to a circuit breaker of a gas-insulated switchgear, and more particularly, to a self-blast circuit breaker of a gas-insulated switchgear, which reuses arc heat. A self-blast circuit breaker having a heat expansion chamber and a puffer chamber includes auxiliary intake valves which introduce a hot gas exhausted through an inside of an actuating rod, into the heat expansion chamber. | 10-15-2015 |
| 218060000 | Piston structure | 1 |
| 20090078680 | ARC CHAMBER OF A HIGH-VOLTAGE SWITCH WITH A HEATING VOLUME OF VARIABLE SIZE - An arc chamber is disclosed for a gas-insulated high-voltage switch. It contains a heating volume for accommodating compressed quenching gas from an arc zone. A part of the wall of the heating volume is formed by a piston which is displaceable against a restoring force. The piston is arranged as differential piston and has on its side facing away from the heating volume a piston step which forms a first working surface (A | 03-26-2009 |
| 218061000 | Compressing cylinder structure | 5 |
| 20080203061 | Gas-circuit breaker - A gas-circuit breaker includes a cylinder, a stationary piston, and a moving piston. The cylinder has a moving contact that is fixed on one end of a rod and has a gas exhaust that faces a stationary contact. The rod is inserted into the cylinder. The stationary piston is fixed to the container, and is fitted in an opening of the cylinder to create a puffer chamber. Due to movement of the rod, the stationary piston compresses arc-extinguishing gas, and the gas blows onto the arc through gas exhaust. The moving piston partitions the puffer chamber into a first puffer chamber and a second puffer chamber. Sliding of the moving piston changes the capacity of the first puffer chamber and the second puffer chamber according to the difference in pressure in the first puffer chamber and the second puffer chamber. | 08-28-2008 |
| 20140367360 | WEAR-RESISTANT MATERIAL, PUFFER CYLINDER, AND PUFFER-TYPE GAS CIRCUIT BREAKER - The present invention includes a wear-resistant material including: a base material formed of pure aluminum or an aluminum alloy having a finely asperity structure on a surface thereof; and a coat including a hydrated oxide coat of aluminum, the coat being formed on the surface of the base material. Further, the present invention including a puffer cylinder including: a finely asperity structure on an inner-wall surface thereof; and a coat including a hydrated oxide coat of aluminum, the coat being formed on the inner-wall surface of the puffer cylinder. The present invention also includes a puffer-type gas circuit breaker includes the above puffer cylinder. | 12-18-2014 |
| 218062000 | With nozzle | 3 |
| 20090008367 | SWITCHING CHAMBER FOR A GAS-INSULATED HIGH-VOLTAGE SWITCH - The switching chamber is intended for a gas-insulated high-voltage switch. It contains a housing filled with insulating gas and a contact arrangement held in the housing. The contact arrangement has, in a coaxial arrangement, the following components: two switching pieces, which are capable of being moved relative to one another along an axis, with in each case one arcing contact and in each case one tubular conductor containing a rated current contact, an insulating nozzle, and a compression apparatus with a fixed piston and a cylinder. A moveable tubular conductor of the two tubular conductors forms the wall of the cylinder, is electrically conductively and rigidly connected to one of the two arcing contacts via a base of the cylinder and bears the insulating nozzle. | 01-08-2009 |
| 20090045170 | Earthing switch - In an earthing switch a release mechanism releases pressure stored in a puffer type arc cancelling chamber by releasing the chamber at a predetermined area toward a stationary contact unit during a full stroke extent of a movable contact unit so that the puffering operation can be deterred from execution. | 02-19-2009 |
| 20100163527 | HIGH VOLTAGE GAS CIRCUIT BREAKER - The present invention relates to a high-voltage gas circuit breaker, and there is provided a gas circuit breaker including a movable arc contact and a fixed arc contact engaged with the movable arc contact; a cylinder rod coupled with the movable arc contact; an insulating rod connected to the cylinder rod through a link mechanism in which an end thereof is connected to an operating mechanism; and an ejection nozzle for ejecting an arc-extinguishing gas between the movable arc contact and the fixed arc contact, wherein the link mechanism is reduced in a length direction of the insulating rod to pull the cylinder rod to a side of the insulating rod when the insulating rod is moved apart from the cylinder rod. | 07-01-2010 |
| 218063000 | With nozzle | 8 |
| 20080217297 | GAS INSULATED SWITCHGEAR AND METHOD FOR DETECTING ARC DAMAGE IN A GAS INSULATED SWITCHGEAR PART - The invention provides a gas insulated switchgear, and a method for detecting arc damage in a part used in a gas insulated switchgear, which detect directly when an electric contact or a peripheral part reaches an initially set wear limit. An insulating nozzle of a circuit breaker contains a marking substance that releases a gaseous substance inside a circuit breaker gas container as a result of wear by an arc. For ensuring heat resistance and insulation properties, the insulating nozzle is ordinarily formed of a fluororesin, but in the present invention, it is formed of the ordinarily used fluororesin having uniformly mixed therein, as the marking substance, a chlorine-containing resin which has excellent heat resistance and insulation properties such as polyvinylidene chloride. | 09-11-2008 |
| 20100147804 | PUFFER TYPE GAS CIRCUIT BREAKER - An interrupting part | 06-17-2010 |
| 20100326959 | GAS INSULATED SWITCHGEAR AND METHOD FOR DETECTING ARC DAMAGE IN A GAS INSULATED SWITCHGEAR PART - The invention provides a gas insulated switchgear, and a method for detecting arc damage in a part used in a gas insulated switchgear, which detect directly when an electric contact or a peripheral part reaches an initially set wear limit. An insulating nozzle of a circuit breaker contains a marking substance that releases a gaseous substance inside a circuit breaker gas container as a result of wear by an arc. For ensuring heat resistance and insulation properties, the insulating nozzle is ordinarily formed of a fluororesin, but in the present invention, it is formed of the ordinarily used fluororesin having uniformly mixed therein, as the marking substance, a chlorine-containing resin which has excellent heat resistance and insulation properties such as polyvinylidene chloride. | 12-30-2010 |
| 20110120975 | GAS-INSULATED HIGH-VOLTAGE SWITCH - A high-voltage switch contains two contact members, which can be moved relative to one another along an axis, a nozzle for blowing out a switching arc with quenching gas, and a stationary direction-changing transmission, which is connected to the nozzle and to the second contact member. The nozzle has a hollow insulating body, and a metallic annular body which is arranged at a blowing-out end of the nozzle, is connected in a formfitting manner to the insulating body, and supports an input or output drive element of the direction-changing transmission. This switch can be manufactured easily and at low cost, and provides good mechanical and electrical characteristics. The annular body has a concentrically arranged intermediate ring, which causes the form fit with the insulating body, and a ring, which is pushed onto the intermediate ring and is attached to the intermediate ring, for supporting the input-drive or output-drive element. | 05-26-2011 |
| 20130020286 | GAS CIRCUIT BREAKER - Provided is a gas circuit breaker. The gas circuit breaker includes a fixed part, a movable part, a piston, and a double compression mechanism. The fixed part includes a fixed arc contact and a first fixed contact maker. The movable part includes a movable arc contact selectively making contact with the fixed arc contact, a cylinder in which the movable arc contact is disposed, and a second fixed contact maker guiding a movement of the cylinder. The piston is disposed in the second fixed contact maker. The double compression mechanism is configured to move the piston in a direction opposite to a moving direction of the movable part when the movable part is moved to separate the fixed arc contact and the movable arc contact for interrupting a fault current. | 01-24-2013 |
| 20140190938 | PUFFER TYPE GAS CIRCUIT BREAKER - This puffer type gas circuit breaker has: a stationary-side main contact | 07-10-2014 |
| 20140263187 | GAS-INSULATED DEVICE FOR ELECTRICAL POWER AND OPERATION METHOD THEREOF - A gas-insulated device for electrical power is disclosed that includes: a fixed contact unit and a movable contact unit which are disposed to face with each other in an airtight container filled with a carbon dioxide gas or a gas mixture including a carbon dioxide gas, serving as an arc extinguishing gas. The fixed contact unit includes a fixed arc contact, a fixed conduction contact disposed outside the fixed arc contact, and a conductive supporting member for electrically connecting between the fixed arc contact and the fixed conduction contact and supporting these contacts. | 09-18-2014 |
| 20160379780 | GAS CIRCUIT BREAKER - In a gas circuit breaker according to an embodiment, a container is filled with an arc extinguishing gas. A movable part housed in the container and includes a movable arc contact. The movable part is provided with an accumulation part for increasing pressure of the arc extinguishing gas. A counter part is housed in the container and includes a counter arc contact, an exhaust pipe, and a shield. The shield is disposed in the exhaust pipe in a state that a flow of the arc extinguishing gas inside the exhaust pipe is allowed. A nozzle is housed in the container and provided with a space. An arc discharge occurs between the movable arc contact and the counter arc contact in the space. The arc extinguishing gas having an increased pressure in the accumulation part flows into the space to extinguish the arc discharge and flows into the exhaust pipe. The shield has a first shield wall crossing the axial direction of the exhaust pipe. | 12-29-2016 |
| 218065000 | Contact structure | 2 |
| 20120012558 | GAS INSULATED BREAKING DEVICE - In a gas insulated breaking device which accommodates open/close elements including a puffer cylinder which compresses an insulation gas and extinguishes an arc and a contact finger which has a slide contact portion which is brought into slide contact with a slide contact portion of the puffer cylinder in the inside of a vessel in which the insulation gas is sealed, a relatively soft plating film is formed on the slide contact portion of the puffer cylinder, and a relatively hard plating film is formed on the slide contact portion of the contact finger, and the silver plating film of each slide contact portion has an inner layer thereof formed of a soft film and an outer layer thereof which constitutes a surface portion formed of a hard film. | 01-19-2012 |
| 20150108091 | BYPASS SWITCH ASSEMBLY - A mechanical switch in the form of a bypass switch assembly is arranged between two electrical conductors (busbars) and stays open during normal operation. When a cell fault happens, the fault and bypass information is transmitted to an actuator (acting as a trigger circuit) which activates inter alia a gas generator producing huge volume of gas in a very short time. The gas pressure pushes a movable member to bridge the two electrical conductors with ultrafast speed. | 04-23-2015 |
| 218066000 | Valve (e.g., blast valve or pressure relief valve) | 1 |
| 20110163069 | GAS-INSULATED HIGH-VOLTAGE SWITCH - The high-voltage switch exhibits a compression space of small dimensions, in which, on interruption of a current, insulating gas exhibiting quenching characteristics is compressed mechanically to form quenching gas with the aid of an operating mechanism of the switch. When a small current is interrupted, a sufficient quantity of quenching gas can thus be provided with little mechanical operating force. When a large current is interrupted, quenching gas communicates from the compression space into an expansion volume above a response pressure, keeping the operating force low, of a pressure relief valve. A large quantity of quenching gas is then available for successfully interrupting a large current whilst the operating force is kept low. | 07-07-2011 |
