| Patents for H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means (18,584) |
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| 10/13/1988 | DE3710376A1 Drive device for a movable contact arm of an electrical switchgear unit |
| 10/12/1988 | EP0286335A1 Air-tight ceramic container |
| 10/12/1988 | CN88101589A Differential hydraulic jack for control of electric circuit-breakers |
| 10/11/1988 | US4777335 Contact forming material for a vacuum valve |
| 10/11/1988 | US4777334 Porcelain clad, gas, circuit interrupter operation rod structure |
| 10/11/1988 | CA1243086A1 Insulating material and use thereof in insulators |
| 10/06/1988 | DE3710082A1 Hydraulic drive for a high-voltage switchgear unit |
| 10/05/1988 | EP0285546A1 Electrical high-tension circuit breaker, in particular a pressurized-gas circuit breaker |
| 10/05/1988 | EP0285545A1 Electrical high-tension circuit breaker, in particular a pressurized-gas circuit breaker |
| 10/05/1988 | EP0285544A1 Compressed gas high-voltage power circuit breaker |
| 10/05/1988 | EP0284813A1 Pressurised gas circuit breaker |
| 10/05/1988 | CN87214605U Air-type separating commutator switch |
| 10/05/1988 | CN87211848U Multi-layers assembly segregating unit |
| 10/04/1988 | CA1242755A1 Underoil primary circuit breaker |
| 09/29/1988 | DE3709290A1 Compressed-gas-insulated high-voltage power switch (circuit breaker) having a connection resistor |
| 09/28/1988 | EP0284482A1 Differential hydraulic jack for operating electric breakers |
| 09/28/1988 | EP0284390A2 Vacuum breaker |
| 09/28/1988 | EP0283986A2 Hydraulic or pneumatic control for the operation of the movable contact of a middle- and/or high tension circuit-breaker |
| 09/28/1988 | EP0283985A2 Hydraulic control for a high tension switch apparatus |
| 09/28/1988 | EP0283728A1 Gas-blast load-break switch |
| 09/27/1988 | US4774628 Metalclad substation subdivided into tight compartments |
| 09/27/1988 | US4774388 Compressed dielectric gas circuit breaker |
| 09/27/1988 | US4774387 Dielectric gas high-tension circuit-breaker having a closure resistance |
| 09/22/1988 | DE3816811A1 High-voltage, gas-blast switching chamber |
| 09/20/1988 | US4772865 Flat-type polarized relay |
| 09/14/1988 | EP0281817A1 Arc-extinguishing device for circuit breakers |
| 09/13/1988 | CA1241989A1 Fixed electrode and bellows seals for vacuum contactor |
| 09/07/1988 | EP0280759A1 Arrangement for electric energy cables for protection against explosions of gas and/or dust/air mixtures, especially for underground working |
| 09/07/1988 | CN87108323A Gas breaker |
| 09/06/1988 | US4769740 Pressurized gas-insulated three-phase encapsulated high-voltage circuit breaker |
| 09/06/1988 | CA1241686A1 Self-flow generating gas interrupter |
| 09/01/1988 | DE3705719A1 Heavy-current switch |
| 08/31/1988 | EP0183755B1 Arc quenching device for electric apparatus with gas insulation |
| 08/31/1988 | CN88200382U Separated commutation and arc-extinction type isolating switchgear |
| 08/23/1988 | CA1241046A1 Electrically operated switch having an improved linkage means |
| 08/17/1988 | EP0278894A1 Mechanical interlock for electric switches |
| 08/17/1988 | CN87216307U Energy-stored manual switching mechanism of vacuum breaker |
| 08/16/1988 | US4764650 Molded case circuit breaker with removable arc chutes and disengageable transmission system between the operating mechanism and the poles |
| 08/16/1988 | US4763478 Method and device for driving a linearly movable component, especially the movable switch contact of an electric high-voltage circuit breaker |
| 08/11/1988 | DE3718531A1 Vacuum switch |
| 08/10/1988 | EP0277909A1 Vacuum switch |
| 08/10/1988 | EP0277848A1 Multiphase circuit breaker with self-expansion having per phase a gas-insulated arc extinguishing chamber |
| 08/09/1988 | US4762971 Spring-type operating mechanism for a circuit interrupter |
| 08/09/1988 | CA1240356A1 Disconnect switch for high-voltage switching installation |
| 08/04/1988 | DE3702195A1 Drive for an electrical switching apparatus |
| 08/04/1988 | DE3702009A1 Device for monitoring the vacuum in a vacuum switching tube |
| 08/04/1988 | DE3701759A1 Contact arrangement for a vacuum switch |
| 08/04/1988 | DE3701758A1 Contact arrangement for a vacuum switch |
| 08/03/1988 | CN88100292A Multiphase circuit breaker for gas-insulated metalclad cell |
| 08/02/1988 | US4761523 Gas switch with pressure recease cover |
| 07/27/1988 | EP0275983A1 Medium tension switching apparatus for a high-intensity direct current |
| 07/26/1988 | US4760224 Air circuit interrupter |
| 07/26/1988 | US4760223 Vacuum circuit interrupter |
| 07/26/1988 | US4760222 Vacuum circuit interrupter |
| 07/19/1988 | US4758919 Sectionalizer for spur lines |
| 07/19/1988 | CA1239432A1 Arc extinguishing device for gas insulation electrical apparatus |
| 07/12/1988 | US4757166 Vacuum interrupter with ceramic enclosure |
| 07/12/1988 | CA1239181A1 Arc resistant vapor condensing shield for vacuum-type circuit interrupter |
| 07/12/1988 | CA1239180A1 Axial magnetic field vacuum-type circuit interrupter |
| 06/30/1988 | DE3643672A1 Method for testing the vacuum switching chamber of a vacuum switch and device for carrying out the method |
| 06/29/1988 | EP0272409A1 Polarized flat-type relay |
| 06/29/1988 | CN86108536A Miniature circuit breaker with improved insulation level |
| 06/28/1988 | US4754109 Compressed dielectric gas high-tension circuit breaker |
| 06/23/1988 | DE3642509A1 Nozzle for high-voltage switches |
| 06/22/1988 | CN86100918B Compressed gas type arc-extinguishing breaker |
| 06/21/1988 | US4752859 Arrangement for providing various circuit protection device configurations |
| 06/21/1988 | US4752659 Arc interrupter |
| 06/16/1988 | DE3641632A1 Process for producing a fibre-reinforced compression or tensile rod |
| 06/15/1988 | EP0271181A2 Magnetic vacuum circuit breaker |
| 06/15/1988 | EP0270895A1 Pressurized-gas switch |
| 06/15/1988 | CN85101129B Arc extinction equipment for circuit breaker |
| 06/14/1988 | US4751483 Electric switch for protection appliances such as a cut out |
| 06/14/1988 | US4750375 Drive device for a circuit breaker with a ratchet wheel |
| 06/09/1988 | DE3641573A1 Housing |
| 06/08/1988 | EP0270389A1 Gas insulated multiphase rotating switch |
| 06/08/1988 | EP0270156A1 Filter arrangement |
| 06/07/1988 | US4749831 Dead tank type gas circuit breaker |
| 06/07/1988 | US4749830 Contact pieces for vacuum switchgear, and method for the manufacture thereof |
| 06/07/1988 | US4749829 Circuit breaker |
| 06/07/1988 | CA1237755A1 Power switch assembly |
| 05/31/1988 | US4748305 Gas-blast switch |
| 05/31/1988 | US4748304 Sulfur hexafluoride insulating gas |
| 05/31/1988 | US4748303 Isolating switch of a high voltage metalclad installation |
| 05/31/1988 | US4748302 Arc interrupter |
| 05/31/1988 | US4748301 Electric circuit breaker arc chute composition |
| 05/25/1988 | EP0268156A1 Insulated nozzle for use in an interrupter |
| 05/25/1988 | CN87105280A Insulation nozzle for electrical circuit breaker |
| 05/24/1988 | US4746778 Circuit breaker with an actuating device and an energy accumulator |
| 05/24/1988 | US4746777 Vacuum switching tube |
| 05/18/1988 | EP0179834B1 Switching device with antiarcing screen |
| 05/17/1988 | CA1236868A1 Vacuum interrupter |
| 05/11/1988 | CN87107122A Vacuum breaker |
| 05/10/1988 | US4743876 Circuit interrupter with undervoltage trip mechanism |
| 05/10/1988 | US4743721 Circuit breaker actuator device |
| 05/10/1988 | US4743719 Arc interrupter |
| 05/10/1988 | US4743715 Draw-in and draw-out mechanism of an electrical circuit breaker with main and auxiliary circuits |
| 05/05/1988 | WO1988003324A1 Circuit breaker contact assembly |
| 05/05/1988 | WO1988003323A1 Circuit breaker arc stack assembly |
| 05/05/1988 | DE3636922A1 Bridge-type load interrupter switch |
| 05/04/1988 | EP0265737A1 Optical-fibre arrangement in a high-voltage insulator |