| Patents for H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means (18,584) |
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| 10/07/1987 | EP0239783A2 High-tension electrical switch installation |
| 10/07/1987 | CN87102963A Compressed dielectric gas circuit breaker |
| 10/07/1987 | CN87102961A Electrical circuit breaker with self-expansion and rotating arc |
| 10/07/1987 | CN87102413A Arc interrupter |
| 10/07/1987 | CN87102380A Arc interrupter |
| 10/07/1987 | CN87102311A Electrical circuit breaker with improved dielectric |
| 10/06/1987 | US4698470 Multiple-impact shock-absorbing assembly for circuit interrupter and other apparatus |
| 10/06/1987 | US4698469 Sulfur hexafluoride circuit breaker operating in a very low temperature environment |
| 10/06/1987 | US4698468 Sulphur hexafluoride circuit breaker usable at very low outside temperatures |
| 10/06/1987 | US4698467 Copper, chrominum or alloys; high current at high voltage |
| 10/01/1987 | DE3615559A1 High-voltage switch |
| 10/01/1987 | DE3610245A1 Contact arrangement for vacuum switches having an axial magnetic field, and a method for producing the associated contact elements |
| 10/01/1987 | DE3610242A1 Contact arrangement for vacuum switches having an axial magnetic field, and a method for producing the associated contact elements |
| 09/30/1987 | EP0239460A1 Electric switch having an ameliorated dielectric strength |
| 09/30/1987 | EP0239068A1 Gas blast switch |
| 09/30/1987 | EP0238967A1 Contact arrangement for a vacuum switch with an axial magnetic field, and method of making the assorted contacts |
| 09/30/1987 | EP0238963A2 Circuit breaker |
| 09/30/1987 | EP0238847A1 Operating device for circuit-breaker |
| 09/30/1987 | EP0238843A1 Gas blast switch |
| 09/30/1987 | CN87102379A Arc interrupter |
| 09/29/1987 | US4697055 Arc extinction device for gas insulation electrical switchgear |
| 09/29/1987 | US4696531 Plug-in type contact arrangement |
| 09/29/1987 | CA1227517A1 Disconnect switch |
| 09/23/1987 | EP0237776A2 High-tension circuit breaker |
| 09/22/1987 | US4695918 Pre-insertion inductor arrangement |
| 09/22/1987 | US4695689 Vacuum circuit breaker |
| 09/22/1987 | US4695688 Electrical contact construction |
| 09/22/1987 | US4695687 Contact arrangement for vacuum switches with axial magnetic field, and method for the production of the respective contact pieces |
| 09/16/1987 | EP0236885A2 Pressured gas insulated triphase-enclosed high tension power switch |
| 09/16/1987 | EP0236641A1 Isolator for a metal-clad high tension installation |
| 09/16/1987 | CN87100692A High-tension circuit-breaker having arc-extinguishing gas under pressure |
| 09/15/1987 | US4693747 Grain size |
| 09/09/1987 | EP0236179A1 Snap and disconnecting mechanism of an electrical circuit breaker having main and auxiliary circuits |
| 09/09/1987 | EP0235389A1 Circuit for the synthetic testing of high-voltage circuit breakers |
| 09/09/1987 | CN86206276U Universal socket for h-shaped lamps |
| 09/09/1987 | CN86108695A Method of producing contact alloy for vacuum tube |
| 09/02/1987 | EP0235006A1 Encapsulated switching installation subdivided into gas-tight compartments |
| 09/02/1987 | EP0234246A1 Switch contact members for vacuum switch apparatuses, and method for their production |
| 09/01/1987 | US4690780 Fluids, solids, free-flowing, dielectrics, viscosity |
| 09/01/1987 | CA1226318A1 Spiral arc circuit breaker |
| 08/27/1987 | DE3606239A1 Control circuit having at least one circuit breaker |
| 08/26/1987 | EP0233592A1 Pressurized extinguishing gas high-tension circuit breaker |
| 08/25/1987 | US4689717 Cast housing for medium-voltage switchgear |
| 08/25/1987 | US4689453 Gas-blast switch |
| 08/25/1987 | CA1226025A1 Switch mechanism for transformer |
| 08/25/1987 | CA1226022A1 Assembly device between two chambers of an electric interrupting device |
| 08/19/1987 | EP0232490A2 Electromagnetically actuated high DC current switch |
| 08/19/1987 | CN86207730U Safety knife switch with overload & fusing displaying |
| 08/18/1987 | US4687890 Gas insulated switchgear |
| 08/18/1987 | US4687515 Vacuum interrupter contact |
| 08/12/1987 | EP0231767A1 Contact material for vacuum circuit breaker |
| 08/12/1987 | CN87100459A Switch contact of vacuum switche and method of production |
| 08/12/1987 | CN87100389A Contact material for vacuum valves and manufacturing process |
| 08/11/1987 | US4686393 Circuit breakers for direct and alternating current |
| 08/11/1987 | CA1225423A1 Puffer type gas circuit breaker |
| 08/05/1987 | EP0230852A1 Hydraulic operating mechanism for a circuit-breaker |
| 08/05/1987 | EP0230851A1 Circuit breaker with an actuating mechanism and an energy storage device |
| 08/04/1987 | US4685019 Controlled electrical contacts for electrical switchgear |
| 08/04/1987 | US4684773 Gas-blast switch |
| 08/04/1987 | US4684771 Vacuum switch |
| 07/29/1987 | EP0229918A1 Drive for high-tension power circuit breaker |
| 07/28/1987 | US4683353 Rotary switch for inductively driven rail gun systems |
| 07/21/1987 | US4681993 Spring operating mechanism for an electrical switch |
| 07/21/1987 | CA1224514A1 Switchgear cover interlock preventing access before output contact grounding |
| 07/14/1987 | US4680434 Explosive-driven, high speed, arcless switch |
| 07/14/1987 | CA1224233A1 Vacuum interrupter |
| 07/08/1987 | EP0228099A2 Electrical arc interruption chamber, in particular for fluid-quenched circuit breakers |
| 07/08/1987 | CN86107636A Method for manufacture of contact material |
| 07/07/1987 | US4678878 Gas pressure circuit breaker |
| 07/07/1987 | US4678876 Isolating switch apparatus for a high-voltage switching system which may be insulated with SF6 gas |
| 07/07/1987 | US4678873 Low-voltage circuit breaker having a switching mechanism arranged in a separate chamber |
| 07/01/1987 | EP0226780A1 Testing device for vacuum switching chambers |
| 06/30/1987 | US4677525 Gas-insulated switchgear |
| 06/30/1987 | US4677266 Switch device having an insulating screen inserted between the contacts during breaking |
| 06/30/1987 | US4677265 Gas-blast circuit breaker |
| 06/30/1987 | US4677262 Operator for interrupters and disconnect mechanisms |
| 06/25/1987 | DE3545882A1 Piston/cylinder arrangement, in particular for a high-voltage circuit breaker |
| 06/25/1987 | DE3544972A1 Switch pole arrangement |
| 06/24/1987 | CN86204642U Direct-current magnetic field circuit breaker |
| 06/23/1987 | US4675771 Fault sensing system for a transformer network |
| 06/23/1987 | US4675720 Enclosed thyristor valve |
| 06/23/1987 | US4675484 Gas-blast circuit breaker |
| 06/23/1987 | US4675483 Contact arrangement for vacuum switches |
| 06/23/1987 | US4675482 Switch contact for a vacuum switching tube |
| 06/19/1987 | DE3544647A1 Fault current circuit breaker |
| 06/17/1987 | CN86106540A Envelope assembly of a vacuum interrupter |
| 06/16/1987 | USRE32440 Vacuum circuit interrupter |
| 06/16/1987 | EP0225562A1 Vacuum-switching tubes |
| 06/16/1987 | CA1223052A1 Gas-insulated electric device |
| 06/16/1987 | CA1223024A1 Device for disconnecting a load and visibly opening an electrical circuit |
| 06/10/1987 | EP0225207A1 Cinematic transmission chain between the control mechanism and the poles of an electric circuit breaker with a moulded insulating casing |
| 06/10/1987 | CN86107879A Operating device for high-voltage circuit breaker with closing resistor |
| 06/09/1987 | US4672323 Device for measuring the internal pressure of an operationally built built-in vacuum switch |
| 06/09/1987 | US4672156 Vacuum interrupter with bellows shield |
| 06/04/1987 | DE3542100A1 Quick-action earthing device for gas-insulated switching installations |
| 06/03/1987 | EP0224051A1 Sulphur hexafluoride station for load switching |
| 06/02/1987 | US4670812 System for monitoring the operating condition of a switch to prevent overstress |
| 06/02/1987 | US4670632 High-voltage switch with a closing resistor |
| 06/02/1987 | US4669265 Oleopneumatic control system for electric circuit-breakers |
| 06/02/1987 | CA1222537A1 Vacuum contactor having dc electromagnet with improved force watts ratio |