| Patents for H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means (18,584) |
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| 05/04/1988 | CN86104051A Hydrautic operating mechanism |
| 05/03/1988 | US4742197 High-voltage switch |
| 04/28/1988 | DE3736165A1 Stromschalter Power switch |
| 04/27/1988 | EP0264814A2 Vacuum circuit interrupter |
| 04/27/1988 | CN87213504U Quenching chamber of a.c. high voltage breaker |
| 04/26/1988 | US4740858 Zero-current arc-suppression dc circuit breaker |
| 04/26/1988 | US4740662 Vacuum circuit interrupter |
| 04/26/1988 | US4739672 Mechanical interlock for a vacuum contactor |
| 04/20/1988 | CN87214142U Portable working table for testing high-voltage oil-free switch |
| 04/19/1988 | US4739442 High current mechanical connect/disconnect switch |
| 04/19/1988 | US4739291 Magnetic vacuum circuit breaker |
| 04/19/1988 | US4739137 High voltage sulfur hexafluoride circuit-breaker capable of operating at low outside temperatures |
| 04/19/1988 | US4739136 Control device of a high voltage circuit breaker equipped with closing resistors |
| 04/13/1988 | CN87106466A Gas insulating switch arrangement |
| 04/12/1988 | US4737607 Electrical circuit breaker with self-expansion and rotating arc |
| 04/12/1988 | US4737606 Circuit breaker arc stack assembly |
| 04/12/1988 | US4737605 Vacuum switching tube |
| 04/06/1988 | EP0262937A2 Vacuum circuit interrupter |
| 04/06/1988 | EP0262906A2 Electrode structure for vacuum circuit-breaker |
| 04/05/1988 | US4736080 Puffer type liquefied-gas self-injection circuit breaker |
| 04/05/1988 | US4736079 Puffer type electrical circuit breaker having a high dielectric withstand |
| 04/05/1988 | CA1234856A1 Contact structure for vacuum circuit breaker |
| 03/30/1988 | EP0247198A4 Alloy having improved fatigue crack growth resistance. |
| 03/29/1988 | US4733456 Method of assembling a shield assembly of a vacuum interrupter |
| 03/09/1988 | CN85108383B Tank type switchgear |
| 03/08/1988 | US4730092 Hydraulic driving device for an electric pressurized-gas switch |
| 03/03/1988 | DE3726739A1 Contact pressure-producing device especially for vacuum switches in a single-row or double-row arrangement |
| 02/25/1988 | DE3628174A1 Vacuum switching chamber |
| 02/24/1988 | EP0256780A2 Vacuum circuit interrupter |
| 02/23/1988 | US4727230 Safety switch for inductively driven electromagnetic projectile launchers |
| 02/23/1988 | US4727229 Interrupter isolator |
| 02/23/1988 | US4727228 Contact arrangement for vacuum switches |
| 02/16/1988 | US4725911 Electrical circuit breaker-contactor, notably for capacitor banks |
| 02/11/1988 | DE3723405A1 Rotary interrupter switch (isolating switch) |
| 02/09/1988 | US4724411 Circuit breaker |
| 02/03/1988 | EP0255016A1 Current limiting switch element |
| 02/03/1988 | CN87102299A Metalclad substation subdivided into tight compartments |
| 02/02/1988 | US4723099 Drive for a switch |
| 02/02/1988 | US4723058 Gas switch |
| 01/27/1988 | EP0254089A1 Vacuum switch tube |
| 01/26/1988 | CA1231995A1 Operating mechanism for a control device |
| 01/21/1988 | DE3623994A1 Busbar quick-action short-circuiting switch and/or earthing switch |
| 01/20/1988 | CN87203996U Photoelectric halo measurer |
| 01/20/1988 | CN86101700B Spring operation device for beaking-making machinery |
| 01/19/1988 | US4720613 Contact arrangement for low-voltage circuit breakers with main contacts and burn-off contacts |
| 01/19/1988 | CA1231774A1 Direct current circuit breaker |
| 01/19/1988 | CA1231746A1 Power switch apparatus |
| 01/19/1988 | CA1231745A1 Control device of an electric circuit breaker |
| 01/13/1988 | CN86101866B Insulator gas breaker |
| 01/07/1988 | EP0251147A2 Method and device for the propulsion of a linear movable building element, in particular the movable contact of a high voltage electrical power circuit breaker |
| 01/07/1988 | EP0250619A1 Hydraulic operating apparatus |
| 01/07/1988 | DE3622494A1 Contact system for an electrical gas-blast circuit breaker |
| 01/05/1988 | US4717797 Contact arrangement for a vacuum switching tube |
| 01/05/1988 | US4716812 Hydraulic drive |
| 01/05/1988 | CA1231167A1 Fault current interrupter |
| 12/29/1987 | US4716266 Electrical arc quenching chamber, in particular for fluid-quenched circuit breakers |
| 12/29/1987 | CA1230909A1 Vacuum interrupter electrode with low conductivity magnetic arc rotating portion |
| 12/26/1987 | CN87200422U Vacuum arc extinguishing chamber with single coil producing longitudinal magnetic field |
| 12/23/1987 | EP0249815A1 Fault arc detector device |
| 12/22/1987 | CA1230630A1 High-voltage circuit breaker with improved puffer means |
| 12/22/1987 | CA1230629A1 Disconnect switch for metal-clad, pressurized-gas insulated, high-voltage switchgear installation |
| 12/22/1987 | CA1230628A1 Electrical switch for induction heating system |
| 12/22/1987 | CA1230627A1 Vacuum contactor with kickout spring |
| 12/15/1987 | US4713505 Load break switch |
| 12/15/1987 | US4713503 Three phase vacuum switch operating mechanism with anti-bounce device for interrupter contacts |
| 12/09/1987 | EP0248677A2 Switchgear |
| 12/08/1987 | US4711978 Sulfur hexafluoride circuit-breaker for operating in a very low temperature environment |
| 12/03/1987 | DE3618455A1 Contact system for gas blowout switch - has contact laminae connected to sliding contact piece moving coaxially w.r.t. fixed contact piece |
| 12/03/1987 | DE3618345A1 Electrical gas-blast circuit breaker |
| 12/02/1987 | EP0247198A1 Alloy having improved fatigue crack growth resistance |
| 11/24/1987 | US4709127 Contact arrangement with spacers separating contact levers from each other |
| 11/19/1987 | EP0245513A1 Vacuum interrupter. |
| 11/17/1987 | US4707577 Vacuum interrupter |
| 11/17/1987 | US4707576 Arcing contact tip and method for producing such an arcing contact tip or a comparable component |
| 11/11/1987 | CN87103083A Sulphur hexafluoride circuit breaker usable at very low outside temperatures |
| 11/11/1987 | CN87102578A Load linear motion driver |
| 11/11/1987 | CN87100771A Circuit breaker actuator device |
| 11/10/1987 | US4705144 Spring operating mechanism for a circuit interrupter |
| 11/04/1987 | EP0244276A1 Electrical switch for a protective device such as a circuit breaker |
| 11/04/1987 | EP0243812A1 Test circuit |
| 11/03/1987 | US4704508 Electric arc breaker |
| 11/03/1987 | US4704506 Vacuum interrupter |
| 10/28/1987 | CN87101905A Draw-in and draw-out mechanism of electrical circuit breaker with main and auxiliary circuits |
| 10/22/1987 | DE3613450A1 Contact arrangement for vacuum switches |
| 10/21/1987 | EP0241816A1 Hydraulic drive for an electric switchgear |
| 10/21/1987 | EP0241814A2 Vacuum interrupter |
| 10/20/1987 | US4701583 Gas switch |
| 10/14/1987 | EP0240884A2 Drive for the generation of a linear movement of a consumer |
| 10/14/1987 | CN87102582A 真空断续器 Vacuum interrupter |
| 10/14/1987 | CN87102479A Puffer type electrical circuit breaker having high dielectric withstand |
| 10/14/1987 | CN87102445A Compressed dielectric gas high-tension circuit breaker |
| 10/13/1987 | US4700270 Metal-encapsulated gas-insulated switching system |
| 10/13/1987 | US4700030 Switch device having an insulating screen inserted between the contacts during breaking |
| 10/13/1987 | US4700029 High-tension circuit-breaker having arc-extinguishing gas under pressure |
| 10/13/1987 | US4700028 Portable breakload tool |
| 10/08/1987 | WO1987006052A1 Contact system for vacuum switches with an axial magnetic field |
| 10/08/1987 | DE3611497A1 Drive device for sulphur hexafluoride high-voltage power circuit breakers |
| 10/07/1987 | EP0240406A1 Electrical puffer-type circuit breaker having a high dielectrical strength |
| 10/07/1987 | EP0240397A1 Self-blast electrical circuit breaker with a rotating arc |
| 10/07/1987 | EP0239932A1 High-tension gas blast circuit breaker |