| Patents for H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means (18,584) |
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| 06/03/1980 | US4206331 Self-generating fluid-blast single-break circuit-interrupter |
| 06/03/1980 | US4206330 Moving contact for radial blow-in effect for arc spinner interrupter |
| 06/03/1980 | CA1078900A1 Tank-type oil circuit-interrupter with jet forces counterbalancing the magnetic forces |
| 06/03/1980 | CA1078899A1 Contact arrangement for a pressurized gas circuit breaker |
| 06/03/1980 | CA1078898A1 Arc chute for circuit interrupter |
| 05/28/1980 | EP0011542A1 Circuit breaker with separated main and shunt current paths |
| 05/28/1980 | EP0011122A1 Contacting arrangement for compressed-gas circuit breakers |
| 05/27/1980 | US4205209 Articulated contact finger |
| 05/27/1980 | US4205208 Double-flow compressed-gas operating mechanism for a high-voltage circuit-breaker |
| 05/27/1980 | US4204461 Hydraulic control system for electric circuit-breakers |
| 05/27/1980 | CA1078484A1 Electrical connector switching module |
| 05/20/1980 | US4204103 Driving apparatus for electric power circuit breakers |
| 05/20/1980 | US4204101 Hybrid circuit breaker with varistor in parallel with vacuum interrupter |
| 05/13/1980 | CA1077551A1 Snap-action electric switch with fulcrum means for limited contact sliding and positive-off torque |
| 05/13/1980 | CA1077549A1 Nozzle-type compressed-gas circuit-interrupter having gas-inlet orifices |
| 05/13/1980 | CA1077548A1 Live-tank modular-construction high-voltage compressed-gas circuit-breaker arrangements |
| 05/13/1980 | CA1077547A1 Vacuum type circuit interrupter with a contact having integral axial magnetic field means |
| 05/06/1980 | CA1077105A1 Energy-storing operating mechanism for circuit-interrupting structures |
| 05/06/1980 | CA1077100A1 Disconnect contact assembly for metal-clad switchgear and the like |
| 04/22/1980 | US4199671 Puffer circuit breaker |
| 04/22/1980 | US4199213 Method of constructing an electrical connector switching module |
| 04/22/1980 | CA1076172A1 Contactor having reduced contact bounce and shorter arc time |
| 04/17/1980 | WO1980000764A1 High voltage breaker |
| 04/15/1980 | US4198668 High-voltage direct current interuption devices |
| 04/15/1980 | CA1075744A1 Resistor applications for high-power circuit breakers |
| 04/15/1980 | CA1075743A1 Puffer-type gas-blast circuit breaker |
| 04/15/1980 | CA1075742A1 Vacuum circuit breaker with electromagnetic arc suppressor means |
| 04/08/1980 | US4197438 Electric switch |
| 04/02/1980 | EP0009446A1 Compressed-gas high tension circuit interruptor |
| 04/01/1980 | US4196327 Vacuum interrupter |
| 03/25/1980 | US4195211 Single pole trip and ganged pole closing for multiphase high-voltage power circuit breakers |
| 03/25/1980 | CA1074374A1 Stationary-contact-and-voltage-shield assembly for a gas-puffer-type circuit-interrupter |
| 03/25/1980 | CA1074372A1 Low voltage vacuum switch and operating mechanism |
| 03/25/1980 | CA1074370A1 Circuit breaker motor and handle clutch |
| 03/19/1980 | EP0008862A1 Electrical device with a divalent sulfur dielectric gas and a composition comprising divalent sulfur |
| 03/11/1980 | US4192981 Structurally improved rod array vacuum interrupter |
| 03/11/1980 | US4192572 Stripping the cover sheet from the photoadherent layer containing material ethylenically unsaturated or benzophenone type groups, washing |
| 03/11/1980 | CA1073507A1 Repulsion coll actuator for high speed high power circuits |
| 03/05/1980 | EP0008546A1 Puffer-type gas-blast circuit interrupter with magnetic and pneumatic arc extinguishing |
| 03/05/1980 | EP0008513A1 Switch arrangement for three-phase electrical supply |
| 03/04/1980 | CA1073018A1 Puffer-type gas-blast circuit breaker |
| 03/04/1980 | CA1073017A1 Compact vacuum switch for high voltage circuit interruption |
| 03/04/1980 | CA1073016A1 Vacuum circuit breaker with improved means for limiting overtravel of movable contact at end of opening stroke |
| 03/04/1980 | CA1073015A1 Vacuum-type circuit interrupter with improved protection for bellows |
| 03/04/1980 | CA1073014A1 Vacuum-type circuit interrupter with means for protecting its bellows against mechanical damage |
| 02/26/1980 | US4190753 Copper and chromium powder |
| 02/26/1980 | US4190733 High-voltage electrical apparatus utilizing an insulating gas of sulfur hexafluoride and helium |
| 02/19/1980 | CA1072199A1 Generator circuit-breaker assembly |
| 02/19/1980 | CA1072161A1 High current electrical joint apparatus |
| 02/19/1980 | CA1072159A1 Double-flow puffer-type single-pressure compressed-gas circuit-interrupter |
| 02/19/1980 | CA1072158A1 Puffer-type gas-blast circuit-interrupter having variable-area stationary composite piston structure |
| 02/19/1980 | CA1072157A1 Compressed gas insulated circuit breaker module |
| 02/07/1980 | WO1980000203A1 High speed actuating mechanism |
| 02/05/1980 | US4187437 Switching apparatus for medium-voltage cable networks |
| 02/05/1980 | US4186985 Electrical connector |
| 01/24/1980 | WO1980000115A1 Electromagnetic contactor arc chute |
| 01/23/1980 | EP0007123A1 High speed actuating mechanism |
| 01/22/1980 | CA1070361A1 Grounded tank type gas circuit breaker |
| 01/15/1980 | US4184059 Encapsulated vacuum switch having improved switch arm seal |
| 01/09/1980 | EP0006392A1 Insulating casing of moulded resin for electric apparatus |
| 01/08/1980 | US4183005 Circuit interrupting device |
| 01/08/1980 | US4182942 Puffer-type gas-blast circuit breaker |
| 01/08/1980 | CA1069255A1 Ink composition for ink jet recording |
| 01/01/1980 | US4181837 Compressed-gas circuit interrupter having insulated contacts |
| 01/01/1980 | CA1069159A Vacuum switch and electro-magnetic coil assembly therefor |
| 01/01/1980 | CA1068894A Gaseous dielectric mixtures |
| 12/25/1979 | US4180788 Vacuum circuit breaker with delayed trip operation |
| 12/25/1979 | CA1068755A High voltage electrical equipment cell |
| 12/25/1979 | CA1068754A Compact high-current vacuum circuit interrupter comprising a metal housing that is electrically connected to one contact of the interrupter |
| 12/25/1979 | CA1068753A High current vacuum circuit interrupter with contacts having beryllium arcing portions |
| 12/25/1979 | CA1068752A High continuous current vacuum-type circuit interrupter |
| 12/11/1979 | CA1067941A1 Puffer-type gas-biast circuit breaker |
| 12/04/1979 | US4177368 Switch operating rod assembly |
| 12/04/1979 | CA1067549A1 High voltage switch with molded support base |
| 12/04/1979 | CA1067309A1 Hot spot thermometer |
| 11/27/1979 | US4175817 Electrical connector switching module |
| 11/14/1979 | EP0005209A1 Switch combination for bus-bar installations |
| 11/14/1979 | EP0005208A1 Electrical switchgear |
| 11/13/1979 | US4174474 Endswitch cam arrangement |
| 11/13/1979 | CA1066335A1 Vacuum switches |
| 11/13/1979 | CA1066334A1 Vacuum-type circuit interrupter with two sets of contacts electrically in parallel |
| 11/13/1979 | CA1066333A1 Vacuum-type circuit interrupter with a plurality of sets of contacts in parallel |
| 11/06/1979 | CA1065937A1 Closing-resistor support for ehv power circuit-breakers |
| 11/06/1979 | CA1065936A1 Puffer-type compressed-gas circuit-interrupter |
| 11/06/1979 | CA1065935A1 Double-puffer-type compressed-gas circuit-interrupter constructions |
| 11/06/1979 | CA1065934A1 Grounded-tank high-power compressed-gas circuit-interrupter |
| 11/06/1979 | CA1065929A1 Cut-out switch having load interrupter |
| 10/31/1979 | EP0004873A1 Frictionally operative latch structure with two relatively movable parts |
| 10/30/1979 | CA1065373A1 High current capacity rod array vacuum arc discharge device |
| 10/23/1979 | US4172270 Compressed gas filled circuit breaker |
| 10/23/1979 | US4172268 Direct current circuit interrupting apparatus |
| 10/17/1979 | EP0004662A1 Oil-break tap selectors for tap changers of tap transformers |
| 10/16/1979 | US4171474 Current interrupter electrode configuration |
| 10/16/1979 | CA1064558A1 Sf6 puffer for arc spinner |
| 10/09/1979 | CA1064084A1 Oil circuit-breaker pump-assembly with improved shunting contact structure |
| 10/09/1979 | CA1064083A1 Magnetically driven ring arc runner for circuit interrupter |
| 10/09/1979 | CA1064082A1 Sf6 immersed circuit interrupter with electromagnetic arc rotating means |
| 10/09/1979 | CA1064081A1 Hybrid power circuit breaker |
| 10/09/1979 | CA1064079A1 Distribution transformer secondary circuit breaker having cantilevered contacts |
| 10/02/1979 | CA1063656A1 Vacuum interrupter having primary electrode surrounded by shield |