| Patents for H01H 31 - Air-break switches for high tension without arc-extinguishing or arc-preventing means (5,099) |
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| 02/08/1983 | CA1140967A1 Power driven group operated circuit disconnect apparatus for overhead electric power lines |
| 01/19/1983 | EP0070249A2 Isolating switch |
| 01/19/1983 | EP0070248A2 Isolating switch |
| 01/18/1983 | CA1139811A1 Rotary switch for gas-insulated substations |
| 01/11/1983 | CA1139337A1 Fuse link for a fuse cutout |
| 12/28/1982 | US4366353 Anti-paralleling apparatus for high-voltage gear |
| 12/08/1982 | EP0066533A2 Isolating switch for high-voltage installations |
| 11/02/1982 | US4357504 Bearing and journal means for the rotatable crank-arm assembly of a disconnecting switch |
| 11/02/1982 | US4357503 Blade-adjustment device for a disconnecting-switch structure |
| 10/26/1982 | CA1134414A1 Metal-clad pressurized gas insulated high voltage switching apparatus |
| 09/28/1982 | US4351989 Disconnect switch for metal-encapsulated high-voltage switching installations |
| 08/17/1982 | US4345291 Automatic sectionalizing system |
| 08/10/1982 | US4344059 Arcing rod catcher for high voltage fuse |
| 07/27/1982 | US4342067 Electric power substation for use at very high voltages |
| 07/13/1982 | US4339636 Disconnecting switch having improved switch-blade hinging structure |
| 07/06/1982 | CA1127285A1 Very high voltage electric station |
| 06/01/1982 | CA1124770A1 Fuse mounting |
| 05/11/1982 | US4329554 Loadbreak arc snuffing device |
| 04/20/1982 | US4326184 Electric cutout |
| 04/06/1982 | CA1121421A1 Telescoping disconnect switch with high current contact system |
| 04/06/1982 | CA1121420A1 Telescoping disconnect switch with low resistance center conductor |
| 04/06/1982 | CA1121419A1 Telescoping disconnect switch with gasketed covered access port |
| 04/06/1982 | CA1121418A1 Telescoping disconnect switch with rail-mounted telescope section |
| 03/02/1982 | US4317973 Disconnect switch and drive mechanism therefor |
| 02/24/1982 | EP0046303A2 Disconnect contact assembly |
| 02/23/1982 | US4317099 Fuse link |
| 12/22/1981 | US4307369 High-voltage fuse cutout |
| 11/10/1981 | US4300028 Rotary switch for gas-insulated substations |
| 10/27/1981 | USRE30784 Group operated circuit disconnect apparatus for overhead electric power lines |
| 10/27/1981 | US4297553 Enclosed switching apparatus |
| 10/20/1981 | US4296284 Flexible shield for high voltage disconnect switch |
| 10/07/1981 | EP0037295A1 High-speed circuit breaker provided with a shock-proof device |
| 09/08/1981 | US4288667 Telescoping disconnect switch with rail-mounted telescope section |
| 08/18/1981 | CA1107360A1 High-voltage electrical apparatus utilizing an insulating gas of sulfur hexafluoride and helium |
| 07/28/1981 | CA1105969A1 Pressurized fluid blast circuit interrupting device having fluid accerlerating facilities |
| 05/19/1981 | US4268811 Circuit interrupting device |
| 04/28/1981 | US4264792 Safety locking system |
| 04/07/1981 | CA1098938A1 Offset, series connected current limiting fuse and expulsion fuseholder assembly for opengate cutout |
| 03/31/1981 | CA1098572A1 Vertical reach switch |
| 03/24/1981 | CA1098157A1 Corona shields and method of fabrication thereof |
| 03/17/1981 | US4256934 Disconnecting switch arrangement |
| 02/10/1981 | US4250357 Fuse mounting |
| 02/04/1981 | EP0023247A1 Disconnecting switch |
| 01/27/1981 | CA1094616A1 Support assembly for a circuit interrupting device |
| 12/30/1980 | CA1092696A1 Automatic resetting control circuit for air switch operator |
| 11/18/1980 | CA1089898A2 Switch operating mechanisms for high voltage switches |
| 10/07/1980 | CA1087234A1 Polyphase disconnecting switch arrangement |
| 09/23/1980 | CA1086362A1 Polyphase isolator switches |
| 08/06/1980 | EP0013963A1 L.T. fuse and disconnector assembly |
| 07/29/1980 | US4215256 Gas-insulated switchgear apparatus |
| 07/08/1980 | US4211902 Apparatus for phase switching in pumping-up power station |
| 06/03/1980 | CA1078897A1 Arcing rod catcher for high voltage fuse |
| 05/27/1980 | CA1078483A1 Electrical connector switching module |
| 02/26/1980 | US4190733 High-voltage electrical apparatus utilizing an insulating gas of sulfur hexafluoride and helium |
| 02/12/1980 | US4188516 Telescoping disconnect switch with high current contact system |
| 02/12/1980 | US4188515 Telescoping disconnect switch with low resistance center conductor |
| 02/12/1980 | US4188514 Telescoping disconnect switch with gasketed covered access port |
| 01/15/1980 | US4184138 Offset, series connected current limiting fuse and expulsion fuseholder assembly for opengate cutout |
| 01/15/1980 | US4184058 Polyphase isolator switches |
| 12/04/1979 | CA1067548A1 High voltage grounding switch requiring low operating effort |
| 11/27/1979 | CA1067124A1 Rotating mechanism for rapidly, linearly operating circuit interrupting devices |
| 11/06/1979 | CA1065929A1 Cut-out switch having load interrupter |
| 09/25/1979 | CA1063145A1 Magnetizing current switch |
| 09/18/1979 | CA1062751A1 Disconnect switch and drive mechanism therefor |
| 07/17/1979 | US4161711 Circuit interrupting device |
| 06/26/1979 | CA1057345A1 High voltage switch mechanism |
| 04/18/1979 | EP0001444A1 Disconnecting switch for high tension |
| 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 |
| 04/04/1979 | EP0001293A1 Disconnecting switch for high tension |
| 02/20/1979 | CA1049077A1 Rotation reducer for power switch assembly |
| 12/05/1978 | US4128856 Automatic resetting control circuit for air switch operator |
| 11/21/1978 | US4126773 Polyphase disconnecting switch arrangement |
| 11/14/1978 | CA1042491A1 Composite dropout fuse device |
| 10/31/1978 | US4123639 Support assembly for a circuit interrupting device |
| 10/03/1978 | US4117678 Self-contained hydraulic switch operator |
| 09/26/1978 | US4117440 Fuse mount for switching apparatus |
| 09/05/1978 | US4112268 Double side air break disconnecting switch |
| 08/15/1978 | US4107498 Disconnect switch and drive mechanism therefor |
| 08/15/1978 | US4107496 Vacuum switching apparatus with double interruption and including an interposed barrier |
| 07/25/1978 | US4103122 High voltage grounding switch requiring low operating effort |
| 07/25/1978 | US4103120 Auxiliary mechanism for imparting rotational energy to electrical components |
| 06/13/1978 | US4095061 Group operated circuit disconnect apparatus for overhead electric power lines |
| 05/16/1978 | US4090047 Center break disconnect switch assembly |
| 10/18/1977 | US4054762 Electrical connectors |
| 09/20/1977 | US4049933 Electrical shorting device |
| 08/30/1977 | US4045762 Remote control fuse closing device |
| 06/14/1977 | US4029923 Magnetizing current switch |
| 05/31/1977 | US4027126 Shorting and grounding arrangement for gas-insulated bus bars |
| 05/24/1977 | US4025742 Positive mechanical lock-out device |
| 03/08/1977 | US4011537 Composite dropout fuse device |
| 02/01/1977 | US4006325 Offset pivot ground switch |
| 01/11/1977 | US4002869 Automatic high voltage grounding device for personnel safety |
| 01/04/1977 | US4001530 Ice breaking device for disconnect switch contact assemblies |
| 09/14/1976 | US3980409 Extensible tool for handling energized electric equipment |
| 08/10/1976 | US3974349 Circuit breaker with automatically adjustable contact pressure |
| 05/18/1976 | US3958089 Anti-rotation device for power switch assembly |
| 04/20/1976 | US3952273 High voltage switch mechanism |
| 01/13/1976 | US3932715 High voltage switch |