| Patents for H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means (18,584) |
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| 05/19/2005 | WO2004097873A3 Vacuum encapsulation having an empty chamber |
| 05/19/2005 | US20050104598 Method and apparatus for detecting wear in components of high voltage electrical equipment |
| 05/19/2005 | US20050103820 Solder ring for production of vacuum tube and method for the production of such a solder ring and of a vacuum tube |
| 05/19/2005 | US20050103514 Vacuum switchgear |
| 05/18/2005 | CN2701053Y AC overcurrent electromagnet |
| 05/18/2005 | CN1618112A Vacuum interrupter with a switch contact piece |
| 05/18/2005 | CN1618111A Non-linear magnetic field distribution in vacuum interrupter contacts |
| 05/18/2005 | CN1617279A 真空阀 Vacuum valve |
| 05/18/2005 | CN1617278A Energy storage mechanism for air circuit breaker |
| 05/18/2005 | CN1202543C Operating device for driving and controlling an electrical switching apparatus |
| 05/11/2005 | EP1529299A2 Drive mechanism for switching installation, and method for operating it |
| 05/11/2005 | CN2699453Y Permanent magnet control mechanism for electric switch |
| 05/11/2005 | CN1615532A 空气断路器 Air Circuit Breakers |
| 05/11/2005 | CN1201358C Air-blowing type gas breaker |
| 05/11/2005 | CN1201357C Switch mechanism and its manufacturing method |
| 05/11/2005 | CN1201356C Actuation and control device for electric switchgear |
| 05/11/2005 | CN1201355C Drive devices for interrupter units in power supply switching device |
| 05/10/2005 | US6891122 Vacuum switch tubes |
| 05/10/2005 | US6891121 Integrated contact for power switchgear |
| 05/10/2005 | US6891120 Multipolar integrated contact for power switchgear |
| 05/06/2005 | WO2005041228A1 Shielded encapsulated vacuum interrupter |
| 05/05/2005 | US20050092714 Electrical contact, method of manufacturing the same, electrode for vacuum interrupter, and vaccum circuit breaker |
| 05/05/2005 | US20050092713 Vacuum interrupter with a switch contact piece |
| 05/04/2005 | EP1528581A1 Electrical contact, method of manufacturing the same, electrode for vacuum interrupter, and vacuum circuit breaker |
| 05/04/2005 | EP1344237B1 Contact arrangement for a vacuum switch tube |
| 05/04/2005 | EP1168392B1 Contactor |
| 05/04/2005 | DE19612143B4 Verfahren zur Herstellung eines Spiralkontaktstückes für eine Vakuumkammer und Vorrichtung zur Durchführung des Verfahrens A method of fabricating a scroll contact piece for a vacuum chamber and a device for carrying out the method |
| 05/04/2005 | CN1612275A Electrical contact, method of manufacturing the same, electrode for vacuum interrupter, and vacuum circuit breaker |
| 05/03/2005 | US6888269 Magnetic linear drive |
| 04/28/2005 | US20050088265 Magnetic actuator |
| 04/27/2005 | EP1222472A4 Partial discharge monitoring system for transformers |
| 04/27/2005 | CN2696103Y Outdoor 40.5 KV high voltage vaccuum switch arc extiguisher |
| 04/27/2005 | CN1610959A Circuit breakers with integrated current and/or voltage sensors |
| 04/27/2005 | CN1610033A Operating mechanism of circuit breaker |
| 04/27/2005 | CN1199216C Current limiter and circuit breaker with current-limiting function |
| 04/27/2005 | CN1199212C Gas insulation switchgear |
| 04/27/2005 | CN1199211C 相位控制开关装置 Phase-control switching apparatus |
| 04/27/2005 | CN1199210C Arc extinguishing aid |
| 04/26/2005 | US6885535 Non-linear snubber circuit |
| 04/26/2005 | US6884952 Contact finger for a high-power switchgear |
| 04/26/2005 | US6884949 Main switch conveying apparatus for vacuum circuit breaker |
| 04/26/2005 | US6884940 Vacuum switchgear |
| 04/21/2005 | US20050082260 Shielded encapsulated vacuum interrupter |
| 04/20/2005 | CN2694465Y Single coil permanent-magnet operating mechanism |
| 04/20/2005 | CN1607626A Joint structure of metal and ceramics and vacuum switch using the structure |
| 04/20/2005 | CN1198305C Switch device |
| 04/20/2005 | CN1198304C Bellows and vacuum switch using the bellows |
| 04/19/2005 | US6882515 Operation circuit and power switching device employing the operation circuit |
| 04/19/2005 | US6881917 Vacuum switchgear |
| 04/19/2005 | CA2298193C Loadbreak connector assembly which prevents switching flashover |
| 04/14/2005 | WO2005034161A1 Drive for a switching device |
| 04/13/2005 | EP1523024A1 Actuator for a hybrid high voltage circuit breaker |
| 04/13/2005 | EP1522083A1 Electrical contact material and method for making same |
| 04/13/2005 | CN2692890Y Mine explosion-isolation safety high-voltage vacuum distributor |
| 04/13/2005 | CN2692824Y High-voltage vacuum circuit breaker |
| 04/13/2005 | CN1606789A Solder ring for production of vacuum tube and method for the production of such a solder ring and of a vacuum tube |
| 04/13/2005 | CN1606207A Section of a high voltage installation provided with cooling means |
| 04/13/2005 | CN1197107C Drive for pole module of circuit breaker |
| 04/13/2005 | CN1197104C Actuation and control device for electric switchgear |
| 04/07/2005 | WO2005031774A1 Device for detecting contact wear in switching appliances |
| 04/06/2005 | EP1520282A2 Arc contact element for an electrical apparatus, production method thereof, corresponding contact assembly and electrical apparatus |
| 04/06/2005 | CN1196154C Contact device for vacuum circuit breaker and vacuum circuit breaker using said contact device |
| 04/05/2005 | US6875941 Hydraulic operating apparatus for switch |
| 03/31/2005 | WO2005029525A1 Medium voltage vacuum circuit interrupter |
| 03/31/2005 | US20050067380 Circuit interrupting device with a turnbuckle and weld break assembly |
| 03/31/2005 | DE4430579B4 Hochspannungsschalter mit einem Hauptschaltkontakt und einer Hilfsschalteinrichtung High-voltage switch with a main switch contact and an auxiliary switching device |
| 03/31/2005 | CA2538557A1 Medium voltage vacuum circuit interrupter |
| 03/30/2005 | EP1519395A2 Interrupting chamber |
| 03/30/2005 | EP1519394A1 System and method for gas recycling incorporating gas-insulated electric device |
| 03/30/2005 | EP1466340A4 Control system for electrical switchgear |
| 03/30/2005 | CN1602535A Method for predicting a future voltage and/or current curve |
| 03/30/2005 | CN1601680A Centrifugal switch for dynamo of dryer |
| 03/29/2005 | US6872907 Circuit-breaker |
| 03/24/2005 | US20050063107 Medium voltage vacuum circuit interrupter |
| 03/23/2005 | EP1516346A1 Screening electrode |
| 03/23/2005 | EP1466338A4 Non-linear magnetic field distribution in vacuum interrupter contacts |
| 03/23/2005 | EP1444713B1 Power switch |
| 03/23/2005 | CN2687820Y Automatic commutation switch |
| 03/23/2005 | CN1598993A Vacuum switch and a vacuum switchgear using the same |
| 03/23/2005 | CN1598992A Gas-insulated switch |
| 03/23/2005 | CN1598988A Transverter of mixed soft cut-off current-limiting circuit breaker |
| 03/23/2005 | CN1194365C Gas breaker |
| 03/23/2005 | CN1194361C Three-phase high-current switch apparatus having doubel-pole on each phase and equiped compensation magnetic pass |
| 03/22/2005 | US6870451 Manual tripping device for magnetic operating mechanism |
| 03/22/2005 | US6870118 Contact for vacuum interrupter, and vacuum interrupter using same |
| 03/22/2005 | US6870113 Latching mechanism for locking a spring energy store |
| 03/17/2005 | WO2005024877A1 A rotating electric motor for operating an electric component |
| 03/17/2005 | US20050056617 Gas-insulated switchgear tank |
| 03/16/2005 | EP1514287A1 Shorting switch and system to eliminate arcing faults in power distribution equipment |
| 03/16/2005 | EP1402548A4 Electrical circuit interrupting device |
| 03/16/2005 | CN2686078Y Side mounting indoor high-voltage vacuum circuit breaker |
| 03/16/2005 | CN1596453A 真空断路器 Vacuum Circuit Breaker |
| 03/16/2005 | CN1595580A Small-sized vacuum load switch |
| 03/16/2005 | CN1595579A Electric operating equipment for double isolating switch |
| 03/16/2005 | CN1193396C Vacuum circuit breaker contact and vacuum circuit breaker using said contact |
| 03/16/2005 | CN1193395C Vacuum interrupter with two contact systems |
| 03/16/2005 | CN1193394C Switch gear |
| 03/16/2005 | CN1193390C Circuit breaker with mixed arc eliminator |
| 03/15/2005 | US6867385 Self-fixturing system for a vacuum interrupter |
| 03/09/2005 | EP1513173A1 Direct current cutoff switch |