| Patents for H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means (18,584) |
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| 08/11/1993 | EP0346411B1 High-current switch |
| 08/10/1993 | US5235147 Sf6 circuit-breaker incorporating both a varistor and a capacitor |
| 08/05/1993 | DE4202376A1 Contact arrangement for load isolation switch in compact network station - has opposing contacts with attachment feet at one end and conductively connected to each other at the other end |
| 08/04/1993 | CN2139738Y Shunt switch buffer |
| 08/03/1993 | US5233143 High-power gas switch with hydride electrodes |
| 07/29/1993 | DE4201956A1 Contact arrangement for vacuum switches with coaxial contacts - has shock absorber between current lead to movable contact and coupling stage of driver |
| 07/28/1993 | EP0474628B1 Process for producing a cucr contact material for vacuum switches and appropriate contact material |
| 07/27/1993 | US5231256 Puffer type gas-insulated circuit breaker |
| 07/22/1993 | DE4201823A1 Load-breaking switch unit - has coupling device connecting drive mechanism to control shaft extending at incline to rotational axis of drive shaft |
| 07/20/1993 | US5229561 Puffer-type gas circuit breaker |
| 07/20/1993 | US5228559 Section switch that opens suddenly |
| 07/20/1993 | CA1320522C High-voltage loadbreak bushing insert connector |
| 07/15/1993 | DE4200896A1 HV power switch with compression cylinder - has screen which surrounds constant current contact on metal cylinder cover when switched on. |
| 07/14/1993 | CN2138337Y Isolated load switch with slow energy storing and quick acting contacts |
| 07/14/1993 | CN2138336Y Semi-automatic low-oil-content breaker washing machine |
| 07/13/1993 | US5227952 Interlock device for circuit breakers |
| 07/13/1993 | US5227758 Bayonet-type fuse and fuseholder assembly |
| 07/08/1993 | WO1993012696A1 Sheet-retaining mat fitment |
| 07/07/1993 | CN2137819Y Outdoor combined insulated vacuum arc-extinguishing chamber |
| 07/06/1993 | US5225743 High voltage switch |
| 07/06/1993 | US5225642 Disconnecting switch |
| 07/06/1993 | US5224592 High voltage switch device and high-voltage change-over switch |
| 07/01/1993 | DE4210695C1 Actuator mechanism e.g. for use with medium voltage switchgear - has rotary input with fork end that operates against pin to turn rod through angle |
| 07/01/1993 | DE4142971A1 Vacuum switch box used for heavy duty switch - comprises chamber sealed with metallic lid carrying switching pieces surrounded by central screen |
| 06/30/1993 | CN1073800A Middle-voltage breaker for indoor or outdoor use |
| 06/30/1993 | CN1073799A Isolating breaker for middle-voltage transformer station or switch |
| 06/30/1993 | CN1073798A Sulfur hexafluoride isolating breaker and its application in power station, transformer station and distributor |
| 06/29/1993 | US5223682 Arc-detecting circuit breaker |
| 06/29/1993 | US5222651 Process for producing a vacuum interrupter chamber |
| 06/29/1993 | US5222382 Locking device for locking a rotary device of electromechanical equipment |
| 06/29/1993 | CA1319731C Vacuum circuit interrupter with axial magnetic arc transfer mechanism |
| 06/29/1993 | CA1319730C Vacuum-type circuit interrupter |
| 06/29/1993 | CA1319729C Vacuum interrupter with ceramic enclosure |
| 06/29/1993 | CA1319728C Differential hydraulic jack for the control of electric circuit-breakers |
| 06/24/1993 | DE4141564A1 Drive space for multipole switching unit - has microprocessor control of electromagnet to regulate speed of motion of switch. |
| 06/23/1993 | CN2137024Y Electronic and electromagnetic quenching switch |
| 06/23/1993 | CN1021387C Load isolating switch for inclined pipe |
| 06/21/1993 | WO1993013537A1 Compact circuit breaker |
| 06/21/1993 | CA2104007A1 Compact circuit breaker |
| 06/17/1993 | DE4241926A1 Arc-preventing switch mechanism for vacuum circuit-breaker - has moving contact actuated by insulating rod with helical spring coupling to end of trip lever |
| 06/16/1993 | EP0546692A1 High voltage switch |
| 06/16/1993 | EP0546678A1 Synthetic test circuits for short-circuit testing of high-voltage alternating current circuit-breakers, and triggered spark gaps for use in such circuits |
| 06/16/1993 | CN2136521Y Lever toggle mechanism for interlocking device of automatic air switch |
| 06/14/1993 | CA2083419A1 Synthetic test circuits for short-circuit testing of high-voltage alternating current circuit-breakers, and triggered spark gaps for use in such circuits |
| 06/10/1993 | WO1993011552A1 Vacuum switch |
| 06/09/1993 | EP0545508A1 Metal-enclosed, gas insulated switch installation with a cable terminal box |
| 06/09/1993 | DE4139834A1 Vakuumschalter Vacuum Switches |
| 06/09/1993 | CN2135831Y Drop type section device |
| 06/08/1993 | US5218212 Device for optically detecting a chemical change in fluid |
| 06/08/1993 | CA1318936C Circuit breaker arc stack assembly |
| 06/03/1993 | DE4239826A1 Electrical switchgear enclosure with separate airtight compartments - has vertical vacuum switch and isolator alignment with gas filled bus=bar chamber and dual operating mechanism for switch and isolator |
| 06/02/1993 | CN1072797A Vacuum valve |
| 06/02/1993 | CN1021093C Circuit breaker |
| 06/01/1993 | US5216214 High- and medium-voltage gas blast circuit breaker |
| 05/30/1993 | CA2083900A1 High voltage, ac circuit breaker with lc circuit |
| 05/27/1993 | WO1993010549A1 Auto-isolating medium voltage circuit breaker and use thereof in electrical bays and medium voltage substations |
| 05/27/1993 | WO1993010548A1 Auto-isolating circuit breaker containing sulphur hexafluoride and use thereof in electrical bays and prefabricated main and other substations |
| 05/27/1993 | WO1993010547A1 Medium voltage circuit breaker for indoor or outdoor use |
| 05/27/1993 | DE4139227A1 Vacuum switching tube with metallic switching chamber - has movable contact at end of bar with seal provided by metal bellows element allowing axial displacement |
| 05/26/1993 | EP0543732A1 Vacuum switch fitted with self-diagnosis means |
| 05/26/1993 | EP0543683A1 Middle voltage load break switch and application to a middle voltage cell and a middle voltage post |
| 05/26/1993 | EP0543682A1 SFG load break switch and application to cells and posts and prefab substations |
| 05/26/1993 | EP0543681A1 Middle voltage circuit breaker for inside or outside |
| 05/26/1993 | EP0543330A2 Vacuum interrupter |
| 05/26/1993 | CN2134709Y Tube-like plug-in load switch |
| 05/25/1993 | US5214557 D.c. vacuum circuit breaker for an electric motor vehicle |
| 05/25/1993 | CA1318339C Electric circuit breaker arc chute composition |
| 05/21/1993 | CA2083295A1 Hybrid circuit breaker for shutting off high d.c. component |
| 05/19/1993 | EP0542637A1 Electrical circuit breaker with two vacuum switch tubes in series |
| 05/19/1993 | EP0542636A1 Multipole circuit-breaker being composed of single-pole units |
| 05/19/1993 | DE4219428A1 Vacuum switching tube with isolating screen between cylinder electrodes - has switching chamber wall region projecting over the enclosure part of through insulator |
| 05/19/1993 | CN2133928Y Switch branching impact travel length device for model 5 high-tension vacuum switch |
| 05/19/1993 | CN2133927Y Top cap of circuit breaker capable of filtering metal particles |
| 05/13/1993 | WO1993009555A1 Drive for a power switch pole |
| 05/12/1993 | EP0540971A1 High- or medium-voltage circuit breaker with triple motion |
| 05/12/1993 | CN2133045Y 10 kv air high voltage a.c. contactor |
| 05/12/1993 | CN2133044Y Operating handle of interlocking apparatus for automatic air switch |
| 05/11/1993 | CA1317619C Dielectric gas high voltage circuit breaker for arc blowing operations |
| 05/11/1993 | CA1317529C Hydraulic system for operating switching or like devices |
| 05/05/1993 | CN2132273Y Damp-proof device for vacuum circuit breaker |
| 05/05/1993 | CN1071785A Multipole circuit breaker with single-pole units |
| 05/05/1993 | CN1071782A Hybrid circuit breaker with axial blowout coil |
| 05/05/1993 | CN1020523C Circuit breaker drive mechanism |
| 05/05/1993 | CN1020522C Breaker of having voltage converter |
| 05/04/1993 | US5207883 Jumper switch means |
| 04/29/1993 | WO1993007986A1 Swivel coupling |
| 04/28/1993 | EP0538269A1 Process for operating a power switch |
| 04/28/1993 | CN2131194Y Multi-stage assemble vacuum contactor |
| 04/27/1993 | US5206616 Switching device for the interruption of fault currents |
| 04/27/1993 | US5206470 Operating device for gas circuit breaker |
| 04/21/1993 | EP0538157A1 Hybrid circuit-breaker with axial blow-out coil |
| 04/21/1993 | EP0296181B1 Circuit breaker arc stack assembly |
| 04/20/1993 | CA1316567C Dead tank circuit breaker |
| 04/18/1993 | CA2080518A1 Hybrid circuit breaker with axial blowout coil |
| 04/18/1993 | CA2080517A1 Electrical circuit breaker with two vacuum cartridges in series |
| 04/15/1993 | WO1993007667A1 Device for overload and short-circuit protection in electric plants |
| 04/15/1993 | WO1993007635A1 Multi-pole vacuum switch with a pole operating unit for each vacuum switching tube |
| 04/15/1993 | WO1993007634A1 Vacuum switch with a drive device and a pole operating unit |
| 04/15/1993 | CA2120150A1 Vacuum switch with a drive device and a pole operating unit |
| 04/15/1993 | CA2120149A1 Multi-pole vacuum switch with a pole operating unit for each vacuum switching tube |