| Patents for H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means (18,584) |
|---|
| 11/15/1990 | WO1990013932A1 Load switching device with a three-position switch |
| 11/15/1990 | WO1990013902A1 Metal-encapsulated, gas-insulated high-tension power circuit-breaker with at least two contact-breaker units per pole |
| 11/15/1990 | DE3915948A1 Lastschaltanlage mit einem dreistellungsschalter Load switchgear with a three-position switch |
| 11/14/1990 | EP0397294A2 Drive mechanism for a vacuum interrupter with a contact spring |
| 11/14/1990 | EP0397068A2 Hydraulic drive |
| 11/13/1990 | US4970482 Current limiting circuit breaker compact arc chute configuration |
| 11/13/1990 | CA1276216C Spring operating mechanism for an electric switch |
| 11/07/1990 | CN1046810A Breaker of having voltage converter |
| 11/06/1990 | US4968861 Actuator mechanism for a high-voltage circuit breaker |
| 10/31/1990 | DE3914730A1 Metallgekapselter, gasiolierter hochspannungs-leistungsschalter mit mindestens zwei unterbrechereinheiten pro pol Metal-encapsulated gasiolierter high-voltage switches with at least two breaker units per pole |
| 10/31/1990 | CN2064936U Glass-metal sealed-in fixed shielded tube of glass vacuum switch tube |
| 10/31/1990 | CN1010243B Differential hydraulic jack with damping system for control of electric circuit-breakers |
| 10/30/1990 | US4967176 Assemblies of PTC circuit protection devices |
| 10/24/1990 | EP0393458A1 Blast gas medium voltage circuit breaker |
| 10/24/1990 | CN1010145B Operating device for high-voltage circuit breaker with closing resistor |
| 10/23/1990 | US4965419 Metal-clad, compressed gas-blast circuit-breaker |
| 10/10/1990 | EP0391339A2 High voltage switch gear |
| 10/09/1990 | US4962289 Switch chamber for a vacuum switch |
| 10/03/1990 | CN1009888B Gas insulated switching arrangement |
| 10/03/1990 | CN1009876B High-tension circuit-breaker having arc-extinguishing gas under pressure |
| 10/03/1990 | CA2003749A1 Electric circuit breaker arc chute composition |
| 09/27/1990 | DE4008801A1 Load switch esp. encapsulated gas insulated rotary switch - has switch housing rotated to closed open and also earth positions to assume switching position visible from outside |
| 09/27/1990 | DE4008800A1 System for quenching arc arising from operation of rotary switch - which has at least one fan arranged in axial direction of switch and has fan rotor with two blades mounted on rotating shaft |
| 09/25/1990 | CA1274615A1 Protection apparatus interrupt device |
| 09/20/1990 | DE4006985A1 Steeping transformer loud switching device - has screening rings acting as shunt resistances parallel to permanent contacts |
| 09/20/1990 | DE3908327A1 Gas-blast circuit breaker |
| 09/19/1990 | EP0388323A1 Autoexpansion electric circuit breaker with insulating gas |
| 09/19/1990 | EP0387635A1 Multipolar vacuum switch configuration |
| 09/19/1990 | CN1045484A Arc spinner interrupter |
| 09/18/1990 | US4958052 ARC severing and displacement method and apparatus for fault current interruption |
| 09/13/1990 | DE3906786A1 Drive mechanism |
| 09/12/1990 | EP0386710A1 Vacuum switch apparatus |
| 09/12/1990 | CN1045312A Contact forming meterial for vacuum interrupter |
| 09/11/1990 | US4956742 Switch gear |
| 09/11/1990 | US4956738 Very high speed circuit breaker assisted by semiconductors |
| 09/07/1990 | WO1990010300A1 A line terminal and arc stack for a circuit breaker |
| 09/05/1990 | EP0385886A1 Circuit breaker with a rotating arc and with a centrifugal effect of the extinguishing gas |
| 09/05/1990 | EP0385380A2 Contact forming material for a vacuum interrupter |
| 09/05/1990 | EP0385265A1 Spring motor driving mechanism for a circuit breaker |
| 09/05/1990 | CN2061730U Electromagnetic vacuum load switch for household |
| 08/29/1990 | EP0384552A2 Process for operating a power circuit breaker |
| 08/29/1990 | EP0384346A1 Interruption device for high-tension DC |
| 08/23/1990 | WO1990009673A1 Gas discharge switch |
| 08/22/1990 | CN1044872A 开关 Switch |
| 08/22/1990 | CN1009300B Hydraulic three-way valve |
| 08/22/1990 | CA2008275A1 Line terminal and arc stack for a circuit breaker |
| 08/21/1990 | US4950855 Self-expansion electrical circuit breaker with variable extinguishing chamber volume |
| 08/21/1990 | US4950854 Vacuum operated circuit breaker apparatus for replacing air-magnetic circuit breaker assemblies |
| 08/21/1990 | US4950852 Metal plates supported by wollastenite-reinforced melamine-for maldehyde resin |
| 08/21/1990 | US4950850 Pedal switch assembly |
| 08/21/1990 | CA1273043A1 Closing resistor dielectric gas high voltage circuit-breaker |
| 08/16/1990 | EP0382327A2 Arc spinner interrupter |
| 08/16/1990 | EP0382324A1 Metal-clad pressurized-gas power switch with an operating rod |
| 08/16/1990 | EP0382323A1 Metal-clad pressurized-gas power switch |
| 08/16/1990 | EP0382145A2 Switch |
| 08/16/1990 | EP0382134A1 Security device for an electrical apparatus using a dielectric gas, particularly for circuit breakers or measurement reducers |
| 08/16/1990 | EP0381843A2 Switch contact |
| 08/16/1990 | DE4003722A1 Verfahren zum schalten eines elektrischen stromkreises und einrichtung zu seiner durchfuehrung A method for switching an electrical circle and device for its implementation |
| 08/16/1990 | DE3904439A1 Metal-encapsulated, gas-blast power circuit breaker (power switch) having connecting devices for the interrupter unit |
| 08/16/1990 | DE3904214A1 Method for limiting a short-circuit current flowing through a high-voltage mains power supply |
| 08/16/1990 | DE3904031A1 Gasentladungsschalter Gas discharge switch |
| 08/09/1990 | DE4003109A1 Three=phase inverter switch |
| 08/09/1990 | DE3904147A1 Metal-encapsulated, gas-blast power circuit breaker (power switch) having rings which are used for field control |
| 08/08/1990 | EP0381542A1 Protected phase-reversal contactor using a multifunctional transmission system for the control of confirmation switches |
| 08/08/1990 | EP0380980A1 Vacuum switch |
| 08/08/1990 | EP0380907A1 High and medium voltage gas blast circuit breaker |
| 08/03/1990 | CA2007196A1 Protected converter invester with multifunctional transmission system to control confirmation switches |
| 08/02/1990 | DE4011194A1 Vacuum switch chamber - has with fixed and moving contacts arranged on common axis and units for prodn. of magnetic field |
| 08/02/1990 | DE3901713A1 Vacuum switch |
| 08/02/1990 | DE3901712A1 Vacuum switch |
| 08/01/1990 | EP0380220A2 Vacuum switch contact materials and the manufacturing methods |
| 08/01/1990 | CN1044361A Gas-blast electrical circuit breaker |
| 07/31/1990 | US4945198 High tension circuit breaker with low operating energy |
| 07/31/1990 | US4945197 High tension circuit breaker including a dielectric gas used for blasting |
| 07/25/1990 | EP0378950A1 Pole for puffer-type electrical circuit breaker |
| 07/25/1990 | CN1008960B Draw-in and draw-out mechanism of electrical circuit breaker with main and auxiliary circuits |
| 07/25/1990 | CN1008956B Insulation nozzle for electrical circuit breaker |
| 07/25/1990 | CN1008954B Switch contact of vacuum switch and method of production |
| 07/24/1990 | US4943691 Low-voltage limiting circuit breaker with leaktight extinguishing chamber |
| 07/24/1990 | CA1271975A1 All temperature, high performance sulphur hexafluoride high voltage circuit breaker |
| 07/19/1990 | DE3901180A1 Self-extinguishing gas-electronic switches (pseudo-spark switches) |
| 07/18/1990 | EP0378161A1 High or middle tension circuit breaker |
| 07/18/1990 | EP0172912B1 Contact material for vacuum breaker |
| 07/18/1990 | CN1044008A High-and medium-voltage gas circuit breakers |
| 07/18/1990 | CN1008850B Circuit breaker actuator device |
| 07/11/1990 | EP0298981B1 Contact system for vacuum switches with an axial magnetic field |
| 07/10/1990 | US4940961 Braking resistor for a high tension electrical network |
| 07/10/1990 | US4940862 Vacuum interrupter with improved vapor shield for gas adsorption |
| 07/05/1990 | DE3844053A1 Superconductive switch |
| 07/04/1990 | EP0375732A1 Locking device for switchgear with electromagnetic drive |
| 07/04/1990 | CN1008652B Differential hydraulic jack for control of electric circuit-breakers |
| 07/04/1990 | CN1008651B High voltage breaker drive |
| 07/03/1990 | US4939492 Electromagnetic trip device with tripping threshold adjustment |
| 07/03/1990 | US4939322 Puffer type circuit breaker |
| 06/28/1990 | DE3843902A1 Method for operating a high-voltage power circuit breaker (power switch), and a locking device for carrying out the method |
| 06/28/1990 | DE3843406A1 SF6 single-pressure circuit breaker (puffer circuit breaker) |
| 06/27/1990 | EP0375310A1 Electromagnetic launcher with improved current commutating switch performance |
| 06/27/1990 | EP0374384A2 Single-pressure switch with SF6 |
| 06/27/1990 | EP0374383A2 SF6 switch using arc-assisted blowing |
| 06/27/1990 | EP0374283A1 Electronic sectionalizer with resettable actuator |