Patents
Sitemap › H01 - Basic electric elements › H01H - Electric switches; Relays; Selectors; Emergency protective devices › H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
Patents for H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means (18,584)
10/1981
10/06/1981US4293834 Load break switch
10/06/1981US4293750 Electric gas blast circuit breaker
10/06/1981US4293749 Puffer type gas circuit breaker
10/06/1981US4293748 Vacuum circuit interrupter electrodes
10/06/1981US4293747 High-voltage puffer-type compressed-gas circuit-interrupter assemblage
10/06/1981CA1110324A1 High-voltage "single-shot" circuit-protecting device with fuse-like characteristics and having a chemical operating mechanism
09/1981
09/30/1981EP0036760A2 Vacuum circuit interrupter system
09/30/1981EP0036725A1 Improved electrical switch construction
09/29/1981CA1109909A1 Circuit interrupter using a minimum of dielectric liquid
09/22/1981US4291208 Gas-insulated circuit-interrupter having improved insulating nozzle
09/22/1981CA1109511A1 Gas-type circuit breaker comprising means to boost arc chamber gas pressure
09/16/1981EP0035581A1 Gas-blast circuit breaker
09/15/1981US4289942 Gas-blast circuit-interrupter with multiple insulating arc-shield construction
09/15/1981US4289941 Load break switch arc suppression
09/15/1981US4289063 Hydraulic driving device
09/09/1981EP0035256A1 Getter body and process for its manufacture
09/08/1981US4288668 Circuit interrupter using a minimum of dielectric liquid
09/08/1981US4288667 Telescoping disconnect switch with rail-mounted telescope section
09/08/1981US4288651 Dielectric gas selected from binary mixtures of SF6, SO2 and CF3 CFCF2
09/08/1981CA1108714A1 Electrical connector
09/08/1981CA1108677A1 Vapor shield support ring for a vacuum interrupter
09/08/1981CA1108676A1 Means for suppressing contact-separation at the end of a circuit-breaker closing operation
09/08/1981CA1108675A1 High tension vacuum switches
09/08/1981CA1108674A1 Pneumatic operating mechanism for a circuit-breaker
09/02/1981EP0034966A1 Electric actuating mechanism for a low tension circuit breaker
08/1981
08/25/1981US4286301 H.V. current cut-out circuit
08/25/1981US4286128 Electric gas-switch
08/25/1981CA1107795A1 Tank-type compressed-gas circuit-interrupter of the puffer type having improved assembly features
08/18/1981US4284927 Method for breaking direct current and d.c. breaker for effecting same
08/18/1981CA1107360A1 High-voltage electrical apparatus utilizing an insulating gas of sulfur hexafluoride and helium
08/18/1981CA1107334A1 Switch for high voltage
08/18/1981CA1107330A1 Self-generating fluid-blast single-break circuit- interrupter
08/18/1981CA1107326A1 Automatic magnetic switch
08/12/1981EP0033691A1 Tripolar encapsulated circuit breaker
08/12/1981EP0033636A1 Vacuum power interrupting device
08/12/1981EP0033355A1 Gas-blast circuit-breaker
08/11/1981CA1106883A1 Fluid blast circuit breaker with arc deflecting magnetic means
08/04/1981CA1106425A1 Fluid-blast type circuit interrupter
07/1981
07/28/1981US4281231 High tension vacuum switches
07/28/1981US4281228 Tool for making and breaking load currents
07/28/1981CA1105969A1 Pressurized fluid blast circuit interrupting device having fluid accerlerating facilities
07/21/1981US4280030 High current mechanism having flexible contact arm
07/21/1981US4280029 Electrical switch
07/21/1981CA1105552A1 Solenoid coil surrounding magnetic circuit gap
07/14/1981US4278860 Arc driven single pressure type circuit breaker
07/08/1981EP0031791A1 High voltage power circuit breaker
07/07/1981US4277746 Gas-insulated electric apparatus and method of detecting partial discharge therein
07/07/1981CA1104635A1 Vacuum arc discharge device with tapered rod electrodes
06/1981
06/30/1981US4276456 Double-flow puffer-type compressed-gas circuit-interrupter
06/30/1981US4276455 Vacuum envelope for current limiter
06/30/1981CA1104179A1 Arc-shield supporting structure of a vacuum power interrupter
06/24/1981EP0030852A1 Vacuum power interrupting device
06/23/1981US4275431 High-voltage single-shot circuit-protecting device with fuse-like characteristics and having a chemical operating mechanism
06/23/1981US4274851 Gas recovery of sulphur hexafluoride
06/17/1981EP0030384A1 High-voltage circuit breaker with autopneumatic switching principle
06/16/1981US4273978 Liquid interrupter module
06/16/1981US4273977 Circuit interrupter
06/16/1981CA1103383A1 Silica-alumina trihydrate filled epoxy castings resistant to arced sf.sub.6
06/16/1981CA1103290A1 Upstanding mounting structure for high-voltage three- break live-module circuit-breaker
06/16/1981CA1103289A1 Gas propelled operating mechanism for a circuit breaker
06/09/1981US4272661 High speed vacuum interrupter
06/03/1981EP0029691A1 A vacuum power interrupter
06/03/1981EP0029482A1 Gas blast switch
06/02/1981US4271343 Gas-tight molded casing for an electrical apparatus
06/02/1981US4271340 Electrical vacuum switch having means for generating an axial magnetic field between the contact faces
06/02/1981US4271339 High voltage circuit switch arrangement
06/02/1981US4270563 Pressure actuated safety device
06/02/1981CA1102385A1 Switch operating rod assembly
06/02/1981CA1102379A1 Fluid-blast circuit breaker comprising a pressure chamber releasing transverse arc-quenching jet of fluid
06/02/1981CA1102378A1 Encapsulated vacuum switch having improved switch arm seal
06/02/1981CA1102099A1 Method of manufacturing a vacuum-type circuit interrupter
05/1981
05/27/1981EP0029205A1 High-current switch
05/27/1981EP0029085A1 Gas blast switch
05/26/1981US4270034 Puffer type circuit interrupter
05/19/1981US4268890 Breaker combination for bus bar installations
05/19/1981US4268811 Circuit interrupting device
05/19/1981US4268733 Liquid SF6 puffer type circuit interrupter
05/19/1981US4268732 Arc quenching chamber for high breaking capacity circuit breakers
05/19/1981CA1101473A1 Normal open low voltage vacuum shorting switch
05/13/1981EP0028376A1 Electric arc cooling device for switch-gear vents
05/13/1981EP0028281A1 Synthetic insulating member under mechanical stress with glass fibre reinforcement free of boron and boron compounds for high tension switching arrangements containing sulphur-hexafluorid gas
05/12/1981US4267416 Contact arrangement for vacuum switch
05/12/1981US4267415 Current limiter vacuum envelope
05/12/1981CA1101040A1 Method for breaking direct current and d.c. breaker for effecting same
05/06/1981EP0028039A1 Puffer type gas circuit-breaker
05/05/1981US4266258 Current limiting device for high voltage switching mechanisms
05/05/1981CA1100617A1 High voltage interconnection breaker
04/1981
04/28/1981US4264795 Switching device
04/28/1981US4264794 Circuit interrupter including arc extinguishing fluid pressurization means and pressure accumulating means
04/28/1981CA1100164A1 Puffer type gas circuit breaker
04/28/1981CA1100163A1 Puffer-type circuit interrupter comprising arc- quenching fluid pressure boosting chamber
04/21/1981US4263491 Method for checking electric contacts of an enclosed-type switching device and an auxiliary apparatus for use with the switching device to use the method
04/21/1981US4263490 Device for switching in closing resistors for high-voltage cut-out switches
04/21/1981US4263487 Air switch
04/21/1981CA1099775A1 Method and apparatus for on-switching in a crossed- field switch device against high voltage
04/14/1981US4262215 Direct current interrupter
04/14/1981US4261476 Joint for envelope of vacuum type electrical device
04/14/1981CA1099319A1 Gas-blast type circuit interrupter comprising electrostatic screening means of the arc region
04/14/1981CA1099318A1 Circuit interrupter comprising arc-quenching fluid pressure boosting chamber
04/07/1981US4260865 Circuit breaker
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