| Patents for H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means (18,584) |
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| 05/26/1987 | US4668848 Alignment and centering arrangement for contacts of an interrupting device |
| 05/26/1987 | US4667569 Fluid-pressure driving device |
| 05/21/1987 | WO1987003136A1 Vacuum interrupter |
| 05/21/1987 | WO1987002918A1 Alloy having improved fatigue crack growth resistance |
| 05/20/1987 | EP0222690A1 Contact arrangement for low-voltage circuit breakers with a movable insulating body |
| 05/20/1987 | EP0222686A1 Contact arrangement with intermediate elements separating the contact levers from one another |
| 05/20/1987 | EP0222684A1 Contact arrangement for low-voltage circuit breakers with main contacts and arcing contacts |
| 05/20/1987 | EP0222073A2 Switch pole for a power circuit breaker |
| 05/20/1987 | CN86106401A Shielding device of vacuum switches |
| 05/19/1987 | US4667072 Gas-insulated circuit breaker |
| 05/19/1987 | US4667070 Contact arrangement for a vacuum switch |
| 05/14/1987 | DE3540474A1 Electrical gas-blast circuit breaker |
| 05/13/1987 | EP0221838A1 Compressed-gas circuit breaker |
| 05/13/1987 | CN85108170A Circuit breaker with an improved internal expanding and venting system |
| 05/12/1987 | US4665289 Puffer type gas insulated circuit breaker |
| 05/12/1987 | US4665288 Compressed gas switch |
| 05/12/1987 | US4665287 Shield assembly of a vacuum interrupter |
| 05/07/1987 | DE3619315A1 Electrical vacuum switch |
| 05/06/1987 | CN85107902A Circuit breaker with calibration adjusting means |
| 05/06/1987 | CN85107852A Molded case circuit breaker with an improved arc gas external venting system |
| 05/05/1987 | US4663504 Load break switch |
| 05/05/1987 | US4663503 MHD pinch interrupting switch for high currents |
| 04/30/1987 | DE3538230A1 Gas-blast circuit breaker |
| 04/29/1987 | CN86204338U Dual closing electromagnet for electromagnetic mechanism of high-voltage circuit breaker |
| 04/29/1987 | CN86107135A Kinematic transmission system between the operating mechanism and poles of a moulded insulating case electrical circuit breaker |
| 04/28/1987 | US4661666 Vacuum interrupter |
| 04/28/1987 | US4661665 Vacuum interrupter and method of modifying a vacuum interrupter |
| 04/21/1987 | US4659888 Switch device having an insulating screen inserted between the contacts during breaking |
| 04/21/1987 | US4659887 Switch device having an insulating screen inserted between the contacts during breaking |
| 04/21/1987 | US4659886 Disconnect switch for a metal-clad, gas-insulated high-voltage switchgear |
| 04/21/1987 | US4659885 Vacuum interrupter |
| 04/21/1987 | CA1220845A1 Dc circuit breaker |
| 04/21/1987 | CA1220630A1 Method of producing copper-chromium fusion alloys as contact material for vacuum power switches |
| 04/15/1987 | CN85107640A Spring-type operating mechanism for a circuit interrupter |
| 04/14/1987 | US4658108 Gas-blast switch |
| 04/08/1987 | EP0217458A2 Arc-quenching chamber for circuit breakers with a fluid arc-quenching medium, in particular for reduced oil volume or liquified gas circuit breakers |
| 04/08/1987 | EP0217313A2 Dielectric isolation of metallic conduits |
| 04/08/1987 | EP0217002A2 Medium voltage load break switch |
| 04/08/1987 | EP0216949A1 Spring-type operating mechanism for a circuit interrupter |
| 04/08/1987 | CN85107341A Gas-blast switch |
| 04/08/1987 | CN85107324A Gas-blast switch |
| 04/07/1987 | US4655098 Drive mechanism for a circuit breaker using eccentric member and directional lock |
| 04/02/1987 | DE3533890A1 Vacuum switching tube for contactor application |
| 04/01/1987 | EP0216724A1 Operating device for a power switch with a ratchet wheel |
| 03/31/1987 | US4654747 Dielectric isolation of metallic conduits |
| 03/31/1987 | US4654540 Group operated circuit disconnect apparatus for overhead electric power lines |
| 03/31/1987 | US4654494 Actuating mechanism for an electrical switch with pressure contacts, especially for a vacuum switch |
| 03/31/1987 | US4654492 Switch drive |
| 03/31/1987 | US4654489 Insulating support column with operating member |
| 03/24/1987 | US4652709 Gas blast switch |
| 03/24/1987 | US4652708 Tank-type switchgear |
| 03/24/1987 | CA1219624A1 Vacuum interrupter |
| 03/17/1987 | US4651024 Electromagnetically actuated high DC current switch |
| 03/17/1987 | US4650942 Compressed gas high tension circuit breaker, requiring low operating energy |
| 03/17/1987 | US4650941 Compressed gas, high tension circuit breaker, with operating energy assisted by the thermal effect of the arc |
| 03/17/1987 | US4650939 Vacuum circuit interrupter having heat exchanger for temperature control |
| 03/11/1987 | EP0214083A1 Load break switch for the middle voltage range |
| 03/11/1987 | EP0214082A2 On-load isolating switch of a high-tension switching unit (three-phase current switch) |
| 03/10/1987 | US4649247 Contact assembly for low-voltage circuit breakers with a two-arm contact lever |
| 03/10/1987 | US4649244 Control device of an electric circuit breaker |
| 03/10/1987 | US4649243 Double-acting, compressed gas, high tension circuit breaker with actuating energy assisted by the thermal effect of the arc |
| 03/10/1987 | US4649241 Solenoid actuated high speed, high current making switch with a movable contact ring |
| 03/10/1987 | US4649237 Power line/transformer switch |
| 03/10/1987 | CA1219025A1 Rotating arc electric circuit breaker |
| 03/10/1987 | CA1219024A1 Vacuum interrupter contact material |
| 03/05/1987 | DE3532963A1 Electrical switch |
| 03/04/1987 | CN85106131A Gaseous cut-out |
| 03/04/1987 | CN85106080A Gearing for mining machine |
| 03/03/1987 | US4647741 Switching device with antiarcing screen |
| 03/03/1987 | US4647730 Rotary isolating switch, especially encapsulated rotary isolating switch |
| 02/26/1987 | DE3529386A1 Encapsulated high-voltage switching device |
| 02/26/1987 | DE3529284A1 Vacuum switching chamber |
| 02/25/1987 | EP0211707A1 Electric circuit breaker contactor for capacitor batteries |
| 02/25/1987 | EP0211287A2 Spring-loaded actuator for an electric circuit-breaker |
| 02/25/1987 | CN86201733U Automatic cutout device with isolation reversing for coal mine |
| 02/24/1987 | US4645889 Varistor quenched arc chute for current limiting circuit interrupters |
| 02/24/1987 | US4645888 Load break switch with safety mechanism |
| 02/24/1987 | CA1218397A1 Current limiting circuit-breaker having an improved contact system |
| 02/19/1987 | DE3528770A1 Medium-voltage switching installation |
| 02/17/1987 | US4644438 Current-limiting circuit breaker having a selective solid state trip unit |
| 02/17/1987 | US4644307 Current limiting type circuit breaker |
| 02/17/1987 | US4644119 Repetitive switch for inductively driven electromagnetic launchers |
| 02/17/1987 | US4644118 Electric power circuit breaker |
| 02/17/1987 | US4644113 Electric safety device |
| 02/11/1987 | CN86105714A 电路断路器 Circuit breaker |
| 02/10/1987 | CA1217831A Coupling device |
| 02/10/1987 | CA1217817A Measurement device for use in high-voltage gas- insulated switch gears |
| 02/04/1987 | EP0210767A2 Circuit breaker |
| 02/03/1987 | US4640794 Impulse rocket propellant |
| 01/29/1987 | DE3526709A1 Single-pole or multi-pole switch for encapsulated, compressed-gas-insulated high-voltage switching installations |
| 01/27/1987 | US4639565 High tension arc-blast circuit breaker |
| 01/27/1987 | US4638718 Fluid-pressure driving device |
| 01/22/1987 | DE3524813A1 Load interrupter switch |
| 01/20/1987 | US4638285 Surge suppressing resistor for a disconnect switch |
| 01/20/1987 | US4638127 Electrical contacts for oscillating yoke of load selector |
| 01/17/1987 | CN85101129A Arc extinction equipment for circuit breaker |
| 01/14/1987 | EP0208292A2 Circuit breaker |
| 01/14/1987 | EP0208271A2 Vacuum interrupter |
| 01/13/1987 | US4636906 Solid state circuit interruption employing a stored charge power transistor |
| 01/13/1987 | US4636600 Vacuum switch provided with horseshoe-shaped elements for generating an axial magnetic field |