| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 218057000 |
Puffer piston
| 25 |
| 218046000 |
Arcing chamber
| 20 |
| 218051000 |
With gas flow means
| 12 |
| 218068000 |
Sealed chamber
| 10 |
| 218053000 |
With nozzle
| 8 |
| 218084000 |
Operating mechanism structure or arrangement | 5 |
| 20080257866 | Circuit breaker with a double acting circuit-breaking chamber and an inverted structure - This invention relates to a circuit breaker ( | 10-23-2008 |
| 20090120910 | Interrupter Unit of an Electrical Switching Device - An interrupter unit of an electrical switching device has a flow-conducting body. Gases which are flowing away are guided by way of the flow-conducting body. The flow-conducting body is formed at least from a first and a second element, wherein a joint gap is formed between the two elements. The joint gap has a section, which is formed with a complementary shape between the two elements so as to form a labyrinth structure. | 05-14-2009 |
| 20130284703 | GAS CIRCUIT BREAKER - A mechanical-puffer-type arc-extinguishing chamber includes a fixed main contact, a movable main contact that moves on an opening-and-closing axis in a connectable and disconnectable manner to and from the fixed main contact, and a mechanical puffer chamber that is provided in the movable main contact and blows compressed insulation gas to an arc. A thermal-puffer-type arc-extinguishing chamber includes a fixed contact, a movable contact that moves on the opening-and-closing axis in a connectable and disconnectable manner to and from the fixed contact, and a thermal puffer chamber in which compressed insulation gas is blown to the arc. The mechanical-puffer-type arc-extinguishing chamber and the thermal-puffer-type arc-extinguishing chamber are arranged in series on the opening-and-closing axis, and two breaking portions are electrically connected in series. | 10-31-2013 |
| 20140144883 | Gas Circuit Breaker - A gas circuit breaker includes a circuit-breaking portion provided within a tank. The tank is filled with insulating gas and disposed in an upright position. The circuit-breaking portion is connected to a bus through a main circuit conductor. The circuit-breaking portion has an operation unit disposed outside the tank. The operation unit is an electric linear motor operation unit composed of a driving portion and a driving energy storage portion. The driving portion is adjacent to the tank. The driving energy storage portion is separated from the driving portion. The driving energy storage portion and the driving portion are electrically connected. | 05-29-2014 |
| 20140190939 | GAS INSULATED SWITCHGEAR - A gas insulated switchgear includes: an enclosure; a stationary contact arm fixedly installed within the enclosure; a movable contact arm installed to be moved within the enclosure such that it is brought into contact with or separated from the stationary contact arm; a cam reciprocating between closing and opening positions to move the movable contact arm; and an actuator moving the cam, wherein the cam includes first and second cam surfaces, and when the cam moves to an opening position by the actuator, movement acceleration of the movable contact arm by the first cam surface is greater than movement acceleration by the second cam surface and a movement distance of the movable contact arm by the first cam surface is smaller than a movement distance by the second cam surface. | 07-10-2014 |
| 218048000 |
Contact structure | 3 |
| 20090014417 | MOVABLE CONTACTOR FOR AIR CIRCUIT BREAKER WITH CONTACT SPRING PROTECTING MECHANISM - A movable contactor for an air circuit breaker with a contact spring protecting mechanism is provided, the movable contactor comprising a shielding plate configured to shield exposed surfaces of the contact springs for protection so as to prevent a deterioration or performance degradation in the contact springs due to arcs. | 01-15-2009 |
| 20120103940 | GAS BLAST CIRCUIT BREAKER WITH MAKING RESISTANCE CONTACT AND ITS MAKING AND BREAKING METHOD - A gas blast circuit breaker with a making resistance contact includes a first movable electrode in which a first arc electrode and a first main electrode in a concentric state are arranged, a second movable electrode in which a second arc electrode and a second main electrode in a concentric state are arranged and which is arranged to face the first movable electrode in the longitudinal direction, a drive device to drive the two movable electrodes to contact with or separate from each other, a conductive support member to slidably support the second main electrode, a making resistive element to slidably support an end portion of the second arc electrode, and a making resistance contact having a fixed making resistance contact fixed to the conductive support member around the second arc electrode and a movable making resistance contact supported by the second arc electrode. | 05-03-2012 |
| 20140299578 | GAS CIRCUIT BREAKER - A gas circuit breaker includes contact rings formed of an elastically deformable material, a movable contact that moves reciprocally along an axis line direction between a current supply position where the movable contact bridges the contact rings and a current cutoff position where the movable contact is separated from both the contact rings, holding tools formed in an annular shape and respectively attached to the contact rings, a covering member having electrically insulating property, slidably attached to a distal end portion of the holding tool in the axis line direction, and configured to be brought into contact with the contact ring, and a covering member having electrically insulating property, slidably attached to a distal end portion of the holding tool in the axis line direction, and configured to be brought into contact with the contact ring. | 10-09-2014 |
| 218085000 |
Arc extinguishing medium | 3 |
| 20090294406 | Medium-voltage or high voltage electrical switchgear - This electrical switchgear has an interrupting chamber enclosing an interrupting gas (G) substantially devoid of SF | 12-03-2009 |
| 20120228264 | USE OF SPECIFIC COMPOSITE MATERIALS AS ELECTRIC ARC EXTINCTION MATERIALS IN ELECTRICAL EQUIPMENT - The present invention provides the use of a composite material comprising a polymeric matrix and at least one metal fluoride filler selected from the cerium fluorides CeF | 09-13-2012 |
| 20130277334 | Dielectric Insulation Medium - A dielectric insulation medium including a fluoroketone containing 5 carbon atoms, in a mixture with a dielectric insulation gas component different from the fluoroketone, in particular air or an air component, the dielectric insulation medium, in particular the dielectric insulation gas, having a non-linearly increased dielectric strength that is larger than a sum of dielectric strengths of the gas components of the dielectric insulation medium. | 10-24-2013 |
| 218086000 |
Low pressure cut-off valve means | 1 |
| 20140014623 | Gas-Insulated High-Voltage Power Circuit Breaker - A simplified construction of a gas-insulated high-power circuit breaker with a saving of components is achieved by at least one hole and at least one leaf spring, which is fastened on one side and is elastically bendable in dependence upon the pressure of the insulating gas in the compression volume, being formed in a valve plate of the valve. The bendable spring closes off the hole when the circuit breaker closes and opens it when the circuit breaker opens as soon as the pressure of the compressed insulating gas in the compression volume exceeds the value of the gas pressure in the low-pressure chamber by at least two bar. | 01-16-2014 |
| 218081000 |
Arc chute | 1 |
| 20090261071 | GAS-BLAST CIRCUIT BREAKER WITH A RADIAL FLOW OPENING - A gas-blast circuit breaker is disclosed which includes a first contact and a second contact which can move relative to one another along a longitudinal axis. A blowout volume is arranged around the first contact. The blowout volume can be connected via a gas channel to an arc zone, in order to blow out an arc which is struck when the first contact is disconnected from the second contact. The blowout volume can be bounded radially on an outside by a separating element which separates the blowout volume from a low-pressure area. A flow opening, which allows a gas exchange, can lead in a radial direction from the low-pressure area into the blowout volume. | 10-22-2009 |
| 218044000 |
Polyphase | 1 |
| 20150076115 | ISOLATING/GROUNDING SWITCH WITH THREE PHASES IN ONE ENCLOSURE - An isolating/grounding switch with three phases in one enclosure has a simple conductor shape and a higher space utilization rate. The switch includes a housing, three first conductors and three second conductors, three first static contacts each connected to one of the first conductors, three second static contacts each connected to one of the second conductors, three moving contacts connected by an insulator, and three grounding contacts electrically connected to the housing. Each first static contact and a corresponding first conductor have the same axis as a corresponding second static contact and a corresponding second conductor. Each moving contact can slide on a corresponding first conductor and is electrically connected thereto. Each moving contact is electrically connected to a corresponding second static contact when at one end of a corresponding first conductor, and electrically connected to a corresponding grounding contact when at the other end of this first conductor. | 03-19-2015 |
| Entries |
| Document | Title | Date |
|---|
| 20110062116 | SELF-BLOWOUT CIRCUIT BREAKER HAVING A FILLING AND OVERPRESSURE VALVE - A self-blowout circuit breaker is disclosed which includes contacts for connecting or disconnecting a circuit, a heating volume, a compression volume and an exhaust volume. The compression volume can be connected to the heating volume by at least one first valve, which heating volume is in turn connected to an arc zone. Upon the disconnection of the circuit, while a first arcing contact is being disconnected from an associated second arcing contact, an arc is produced between the two arcing contacts in the arc zone. The compression volume is separated from the exhaust volume by a combined filling and overpressure valve which is formed as at least one plate, and has at least one tab which is formed in the plate. | 03-17-2011 |
| 20160005559 | Gas Circuit Breaker - A gas circuit breaker is configured by comprising a tank filled with arc extinguishing gas, a pair of fixed side arc contact and moving side arc contact in the tank, a puffer chamber formed with a puffer cylinder including the moving side arc contact at its end and a fixed piston, and an insulating nozzle, attached to the end of the puffer cylinder, surrounding the moving side arc contact, that forms a flow channel to guide arc extinguishing gas from the puffer chamber to the contacts. A puffer cylinder | 01-07-2016 |
| 20160155586 | ARC EXTINGUISHING CONTACT ASSEMBLY FOR A CIRCUIT BREAKER ASSEMBLY | 06-02-2016 |
