| Patents for H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means (18,584) |
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| 04/07/1981 | US4260864 Vacuum-type circuit interrupter with an improved contact with axial magnetic field coil |
| 04/07/1981 | US4260214 Fault-closable electrical connector |
| 04/07/1981 | US4260213 Electric circuit interrupter having means for restricting flow or arc-generated gases therefrom |
| 04/07/1981 | CA1098943A1 Dual-compression gas-blast puffer-type interrupting device |
| 04/07/1981 | CA1098942A1 Circuit interrupter using dielectric liquid with energy storage |
| 04/01/1981 | EP0026130A1 Disconnecting switch for alternating current electrical installations |
| 04/01/1981 | EP0025918A1 Current limiter |
| 04/01/1981 | EP0025833A1 Gas blast switch |
| 03/31/1981 | US4259556 Gas puffer-type circuit interrupter |
| 03/31/1981 | US4259555 Self-extinguishing gas circuit interrupter |
| 03/31/1981 | US4259554 Thin arc runner for arc spinner interrupter |
| 03/31/1981 | US4259097 Filtering means for arc suppressing gas system |
| 03/31/1981 | CA1098571A1 Fluid-blast type circuit breaker comprising valve controlled pressure chamber |
| 03/31/1981 | CA1098570A2 Means for effectively controlling the forces imposed on the movable contact of a vacuum-type circuit interrupter |
| 03/24/1981 | US4258239 Electric circuit breaker |
| 03/24/1981 | US4257905 Nitrogen, hydrogen, carbon monoxide, or carbon dioxide as the second component |
| 03/18/1981 | EP0025375A1 Circuit breaker with magnetic blow-out means and rotating arc |
| 03/17/1981 | US4256941 Spring operating devices for high-voltage circuit-breakers |
| 03/17/1981 | US4256940 Gas-blast type circuit interrupter |
| 03/17/1981 | US4256939 Moving contact for localized gas flow arc spinner type interrupter |
| 03/17/1981 | US4256937 Electromagnetic contactor arc chute |
| 03/17/1981 | CA1097714A1 Electrically conducting gas condenser support for a puffer circuit interrupter |
| 03/17/1981 | CA1097713A1 Puffer circuit interrupter with fluorocarbon liner |
| 03/17/1981 | CA1097712A1 Compressed-gas insulated circuit breaker operating mechanism |
| 03/11/1981 | EP0024542A1 Gas blast switch |
| 03/11/1981 | EP0024494A1 Electric switch board |
| 03/10/1981 | US4255632 Grounding switch for gas-insulated high voltage switchgear |
| 03/10/1981 | US4255631 Exterior connected arc runner for arc spinner interrupter |
| 03/10/1981 | CA1097396A1 Self-extinguishing type circuit interrupter |
| 03/03/1981 | US4254314 Arcing chamber with perforated plates of sieve-like ceramics |
| 03/03/1981 | CA1096915A1 Circuit interrupter comprising a subdivided arc- quenching fluid pressure chamber |
| 03/03/1981 | CA1096914A1 Circuit interrupter comprising plural arc-quenching fluid pressure chambers |
| 02/25/1981 | EP0024252A1 High-voltage circuit breaker with a resistor and an auxiliary switch |
| 02/24/1981 | US4253002 Self-extinguishing type circuit interrupter |
| 02/24/1981 | CA1096429A1 Circuit interrupter comprising plural arc-quenching fluid pressure chambers |
| 02/24/1981 | CA1096428A1 Rod array vacuum switch for high voltage operation |
| 02/18/1981 | EP0024000A1 Low tension contactor with a three-phase contact set |
| 02/17/1981 | US4251699 Composition for quenching an electrical arc |
| 02/17/1981 | CA1095956A1 Puffer-type circuit interrupter and operating mechanism |
| 02/17/1981 | CA1095954A1 Circuit breaker with fast trip mechanism |
| 02/10/1981 | US4250535 Electric switch gear section |
| 02/10/1981 | US4250365 Current interrupter for fault current limiter and method |
| 02/10/1981 | US4250364 Vacuum arc current limiter with oscillating transverse magnetic field and method |
| 02/10/1981 | US4250363 Electrical circuit breaking device and method |
| 02/10/1981 | US4250362 Circuit interrupter utilizing a closing resistance |
| 02/10/1981 | CA1095569A1 Fluid-blast circuit breaker with arc-closed pressure chamber |
| 02/04/1981 | EP0023298A1 Multipolar high tension circuit breaker |
| 02/03/1981 | US4249223 High voltage DC contactor with solid state arc quenching |
| 02/03/1981 | US4249052 Has low current interruption capability |
| 02/03/1981 | US4249051 Arc spinner interrupter with contact follower |
| 02/03/1981 | US4249050 Vacuum switch |
| 02/03/1981 | US4249049 High voltage plain break circuit interrupter |
| 02/03/1981 | CA1095177A1 Low impedance electron beam controlled discharge switching system |
| 02/03/1981 | CA1095105A1 No translation available |
| 01/27/1981 | US4247745 Vacuum-type contactor assembly |
| 01/27/1981 | US4247327 Copper-lithium alloy having face-centered cubic structure |
| 01/27/1981 | CA1094619A1 Puffer-type circuit interrupter comprising fluid pressure storing means |
| 01/21/1981 | EP0022729A1 Bistable hydraulic valve for operating a piston of a fast high tension circuit breaker |
| 01/21/1981 | EP0022535A1 High voltage circuit breaker |
| 01/20/1981 | US4246459 Gas circuit breaker |
| 01/20/1981 | US4246458 Vacuum interrupter |
| 01/07/1981 | EP0021951A1 Gas blast circuit breaker with aspiration |
| 01/07/1981 | EP0021904A1 Shielded circuit breaker equipped with closing resistors |
| 01/07/1981 | EP0021577A1 Electrical switchgear of the rotating arc, double-break type |
| 01/07/1981 | EP0021306A1 Contact arrangement for the high current circuit of a resistance welding machine |
| 01/07/1981 | EP0020805A1 Power circuit interrupter |
| 01/07/1981 | EP0020349A1 Supervision device with a passive optical detector for electrical arcs in a circuit-breaker. |
| 01/07/1981 | EP0020340A1 High voltage breaker |
| 01/06/1981 | US4243860 Circuit interrupter with pressure limiting |
| 01/06/1981 | US4243859 Vacuum switch |
| 01/06/1981 | US4243855 Hydraulic system for simultaneous control, especially for the control of electric circuit breakers |
| 01/06/1981 | US4243854 Quick-break attachment for a pole-top air-break switch |
| 01/06/1981 | CA1093124A1 Puffer-type compressed-gas circuit-interrupter having improved separable contact structure |
| 12/30/1980 | US4242594 Switch arrangement |
| 12/30/1980 | US4242550 Circuit interrupter of the type producing a puff of arc extinguishing gas upon occurrence of an arc |
| 12/30/1980 | US4242549 Electrical gas-blast circuit breaker and method of manufacture |
| 12/30/1980 | CA1092696A1 Automatic resetting control circuit for air switch operator |
| 12/23/1980 | US4241248 Circuit interrupting device |
| 12/23/1980 | US4240300 Operation mechanism |
| 12/23/1980 | CA1092232A1 Compact mounting assembly for electrical switching elements |
| 12/16/1980 | US4239949 Self-extinguishing type circuit interrupter |
| 12/16/1980 | US4239948 Grounded support tank type gas circuit breaker |
| 12/16/1980 | CA1091732A1 Circuit breaker apparatus including jack shaft support |
| 12/10/1980 | EP0020045A1 Electrical switchgear |
| 12/10/1980 | EP0019806A1 Power circuit interrupter with arc-extinguishing means |
| 12/02/1980 | US4237356 Electrical compression switch with contact movement assistor |
| 12/02/1980 | CA1090856A1 Contact arrangement for a puffer-type circuit breaker |
| 12/02/1980 | CA1090855A1 Gas-type circuit breaker comprising pressure generating arc chamber and auxiliary electromagnetic arc control means |
| 12/02/1980 | CA1090561A1 Method and apparatus for producing dry compressed air for electrical gear |
| 11/26/1980 | EP0019320A1 Arc spinner interrupter |
| 11/25/1980 | US4236054 Gas-blast circuit breaker |
| 11/25/1980 | US4236053 Puffer type gas circuit breaker |
| 11/18/1980 | US4234771 Vacuum switch |
| 11/18/1980 | US4234770 Sectionalized porcelain insulator having removable circuit breaker |
| 11/18/1980 | CA1089944A1 Vapor-cooled terminal-bushings for oil-type circuit- interrupters |
| 11/11/1980 | US4233480 Low voltage vacuum switch with three internal contacts including a center floating contact |
| 11/11/1980 | CA1089521A1 Circuit breaker with operating mechanism having outboard cam and ratchet |
| 11/11/1980 | CA1089520A1 Compressed-gas circuit-interrupters of the puffer- type having improved supporting, shielding and assembly features |
| 11/04/1980 | US4231258 Method and apparatus for detecting foreign matters in gas sealed electric apparatus |
| 11/04/1980 | CA1088982A1 Electromagnetic puffer type gas circuit breaker |