| Patents for H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means (18,584) |
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| 09/25/1979 | CA1063145A1 Magnetizing current switch |
| 09/19/1979 | EP0004213A1 Arc-extinguishing device with pneumatic and magnetic self blow-out |
| 09/19/1979 | EP0003976A1 Compressed-gas circuit breaker |
| 09/18/1979 | US4168480 Relay assembly |
| 09/18/1979 | US4168414 Protective switch device and operating mechanism therefor |
| 09/18/1979 | CA1062751A1 Disconnect switch and drive mechanism therefor |
| 09/11/1979 | US4167659 Operation mechanism of switch |
| 09/06/1979 | WO1979000670A1 Short-circuiter for high direct currents |
| 09/04/1979 | US4166937 Hydraulically-activated operating system for an electric circuit breaker |
| 09/04/1979 | US4166798 Electrical device with fluorinated divalent sulfur dielectric gas |
| 08/28/1979 | US4166205 Stored energy circuit breaker |
| 08/28/1979 | CA1061387A1 Actuating mechanisms for vacuum interrupters |
| 08/21/1979 | CA1060979A1 Method and apparatus for a power circuit breaker controller |
| 08/08/1979 | EP0003352A1 Driving mechanism for switches |
| 08/07/1979 | CA1060070A1 Metal-clad gas-type high-power circuit-breaker construction |
| 07/31/1979 | US4163135 High current switches using multi-louvered contact strips |
| 07/31/1979 | US4163133 Circuit breaker apparatus including jack shaft support |
| 07/31/1979 | US4163131 Dual-compression gas-blast puffer-type interrupting device |
| 07/31/1979 | US4163130 Vacuum interrupter with pressure monitoring means |
| 07/31/1979 | CA1059605A1 High-voltage electric circuit breaker comprising series-connected vacuum interrupter and fluid blast interrupter |
| 07/24/1979 | US4162385 Dual spring circuit interrupter apparatus |
| 07/24/1979 | CA1059210A1 Method for manufacturing gas insulated electrical apparatus |
| 07/24/1979 | CA1059192A1 Arc extinguishing arrangement for gas blast type circuit breaker |
| 07/17/1979 | US4161711 Circuit interrupting device |
| 07/17/1979 | US4161638 Vacuum interrupter latch release mechanism |
| 07/17/1979 | US4161636 Arc extinguishing arrangement for gas blast type circuit breaker |
| 07/17/1979 | US4161316 Gastight penetration |
| 07/17/1979 | CA1058737A1 Vacuum circuit breaker comprising series connected vacuum interrupters and capacitive voltage-distribution means |
| 07/11/1979 | EP0002985A1 Hydraulic operating system for electric circuit breakers |
| 07/11/1979 | EP0002685A1 Fluid-blast circuit breaker |
| 07/11/1979 | EP0002684A1 Fluid-blast circuit breaker |
| 07/10/1979 | US4160888 Puffer-type gas-blast circuit breaker |
| 07/10/1979 | CA1058260A1 Vacuum interrupter with cup-shaped contact having an inner arc controlling electrode |
| 07/10/1979 | CA1058259A1 Circuit breaker having members coated with phosphate-chromate protective layers |
| 07/03/1979 | US4160140 Contact arrangement for pressurized-gas circuit breaker |
| 06/26/1979 | US4159498 Electric circuit breaker with high current interruption capability |
| 06/26/1979 | US4159404 Multi-pole high-voltage circuit-interrupter having independent pole tripping with a single common operating mechanism |
| 06/26/1979 | US4158911 Method of manufacturing a vacuum-type circuit interrupter |
| 06/19/1979 | US4158829 Electromagnetically operated DC power contactor |
| 06/05/1979 | CA1055998A1 Vacuum interrupter for high voltage applications |
| 06/05/1979 | CA1055997A1 Electric circuit interrupter of the puffer type comprising a magnetically-actuated piston |
| 06/05/1979 | CA1055996A1 Puffer-type compressed-gas circuit interrupter |
| 05/29/1979 | CA1055552A1 Circuit breakers |
| 05/08/1979 | US4153828 Stored-energy operating means for an electric circuit breaker |
| 05/08/1979 | US4153827 Magnetic blow-out arc extinguishing device |
| 05/01/1979 | US4152562 Driving mechanism for switching apparatus with pressure contacts |
| 05/01/1979 | US4152561 Circuit breaker motor and handle clutch |
| 05/01/1979 | US4151861 Reversing valve |
| 05/01/1979 | CA1053792A1 Automatic transfer switch |
| 05/01/1979 | CA1053540A1 Hydraulic jacks |
| 04/24/1979 | US4151391 Contact arrangement for a pressurized gas circuit breaker |
| 04/17/1979 | US4150270 Encapsulated high voltage switching device |
| 04/17/1979 | CA1052899A1 Switching apparatus including two switches and an interposed barrier |
| 04/10/1979 | US4149054 Disconnect switch for metal-encapsulated high-voltage switching installations |
| 04/10/1979 | US4149051 Electrically conducting gas condenser support for a puffer circuit interrupter |
| 04/10/1979 | US4149050 Cup-shaped contacts for vacuum interrupters having a continuous annular contact surface |
| 04/10/1979 | CA1052427A1 Electric circuit breaker comprising parallel-connected vacuum interrupters |
| 04/03/1979 | US4148085 Interconnection circuit-breaker and electric power installation employing same |
| 04/03/1979 | US4147909 Sintered composite material as contact material for medium-voltage vacuum power circuit breakers |
| 03/27/1979 | US4146766 Actuating mechanisms for vacuum interrupters |
| 03/27/1979 | US4146763 Compressed gas circuit breaker |
| 03/21/1979 | EP0001059A1 High voltage circuit breaker with switching resistor and auxiliary switching arrangement |
| 03/20/1979 | US4145101 Method for manufacturing gas insulated electrical apparatus |
| 03/20/1979 | CA1051072A1 High voltage circuit breaker with shielded contact assemblies |
| 03/13/1979 | US4144426 Single barrel puffer circuit interrupter with downstream gas coolers |
| 03/13/1979 | CA1050593A1 Vacuum interrupter metal-clad switchgear |
| 03/06/1979 | CA1050090A1 Gas-blast electric circuit interrupter of the puffer type |
| 02/27/1979 | US4142081 Contact system for high-voltage power circuit breakers |
| 02/27/1979 | US4142078 Compact mounting assembly for electrical switching elements |
| 02/20/1979 | US4140986 Circuit breaker switch |
| 02/13/1979 | US4139753 Puffer-type compressed-gas circuit-interrupter having improved separable contact structure |
| 02/13/1979 | US4139752 Gas-type circuit-breaker |
| 02/13/1979 | US4139751 Puffer-type compressed-gas circuit interrupter |
| 02/13/1979 | US4139747 High voltage switch with molded support base |
| 02/13/1979 | CA1048579A1 Sealing device for high voltage circuit-breakers_ |
| 02/07/1979 | EP0000501A1 Gas-blast circuit breaker |
| 02/06/1979 | CA1048089A1 Arc quenching arrangement for a gas-flow type circuit breaker |
| 01/30/1979 | CA1047585A1 Protracted-blast electric circuit-breaker for alternating currents |
| 01/23/1979 | CA1047080A1 Electrical power switch with pressurized gas blasting device for lengthening the switching arc |
| 01/16/1979 | US4135071 Vacuum circuit interrupter with disc-shaped beryllium contacts |
| 01/16/1979 | CA1046621A1 Compressed-gas multiphase circuit-breaker installation |
| 01/09/1979 | CA1046115A1 Vacuum-type circuit interrupter with two sets of contacts electrically in parallel |
| 01/02/1979 | US4132876 Puffer type gas circuit breaker |
| 01/02/1979 | CA1045663A1 Gas-pressurized electrical switch with current-generated magnetic field for assisting arc extinction |
| 12/26/1978 | US4131775 Compressed-gas circuit-interrupters of the puffer-type having improved supporting, shielding and assembly features |
| 12/26/1978 | US4131774 Circuit interrupter operating mechanism |
| 12/26/1978 | US4131329 Current interchange for a gas actuated bushing |
| 12/19/1978 | US4130782 High voltage d-c vacuum interrupter device with magnetic control of interrupter impedance |
| 12/19/1978 | US4130781 High voltage d-c vacuum interrupter device with magnetic control of interrupter impedance with movable contact |
| 12/19/1978 | CA1044738A1 Vacuum power interrupter comprising cu or au alloy brazing material and a method of making such interrupter |
| 12/12/1978 | US4129761 Vacuum circuit breaker |
| 12/12/1978 | US4129760 Aluminum-beryllium containing alloy |
| 12/12/1978 | US4128936 Method for the manufacture of contacts for gas-blast circuit breakers |
| 12/12/1978 | CA1044290A1 Dual compression puffer interrupter |
| 12/05/1978 | US4128856 Automatic resetting control circuit for air switch operator |
| 12/05/1978 | US4128826 Electrical high-voltage apparatus |
| 12/05/1978 | US4128748 High-current vacuum switch with reduced contact erosion |
| 11/28/1978 | US4127755 Vacuum switch tube |
| 11/28/1978 | US4127753 Hinge terminal mounting for electric circuit disconnect switch |
| 11/28/1978 | CA1043400A1 Exhaust control device for circuit interrupting devices |