| Patents for H01H 31 - Air-break switches for high tension without arc-extinguishing or arc-preventing means (5,099) |
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| 03/24/1993 | CN2128773Y High-tension disconnecting switch driving drag link connector |
| 03/17/1993 | CN2128411Y Ultra-high voltage isolation switch maintaining arrangement |
| 03/11/1993 | DE4129787A1 Pneumatic valve for interlocked operation of electrical isolating switch - has two position directional valve supplying air to activator and with lever input to displace ball against curved surface |
| 03/02/1993 | US5191311 Switch for use as a vertically mounted cut out or in-line switch |
| 02/16/1993 | US5186315 High voltage disconnecting switch |
| 01/21/1993 | WO1993001604A1 Isolating switch with a main switch pin and an auxiliary contact pin |
| 01/21/1993 | CA2113097A1 Isolating switch with a main switch pin and an auxiliary contact pin |
| 12/23/1992 | CN2125876U Electric section chopper switch |
| 12/15/1992 | US5172090 Electronic line sectionalizer with resettable actuator |
| 12/09/1992 | EP0517295A2 Medium voltage switch with three positions insulated in sulphur hexafluoride |
| 12/01/1992 | US5168137 Manually operable circuit breaker |
| 11/25/1992 | CN1066534A Gas isolated disconnecting switch and gas isolated switching device |
| 11/11/1992 | EP0512366A2 Gas isolated disconnection switch and gas isolated switching device |
| 11/10/1992 | US5162967 Automatic sectionalizer |
| 10/14/1992 | EP0508291A1 NH-fuse breaker of the strip type |
| 10/06/1992 | US5153398 Metal-clad, compressed-gas insulated, high-voltage switching station with an insulated grounding switch |
| 10/01/1992 | DE4209900A1 Hochspannungs-unterbrecher zum ein- und ausspeisen von stroemen in den leitern eines doppelleitungsnetzes High voltage breakers to feed in and feed currents in the conductors of a double-line network |
| 09/30/1992 | EP0505864A1 Insulating rod |
| 09/30/1992 | CA2062668A1 High voltage switch adapted to establish and cut off the bar transfer currents in a looped circuit |
| 09/23/1992 | CN2116976U Electric switch carbinet |
| 09/10/1992 | DE4207185A1 Switchgear with spring driven movable element - which is moved by drive element and shiftable between two stable positions |
| 09/10/1992 | DE4207156A1 Electrical switch and fuse-holder construction with two external electrical connections - has on=off switch with one movable and one fixed contact, two second connections in series between first movable switch contact working directly with fuse connection |
| 09/02/1992 | EP0500550A1 Isolator switch for metal-clad, compressed-gas-insulated high-voltage switchgear. |
| 08/12/1992 | EP0498738A1 High voltage selection switch with lineair movement |
| 08/12/1992 | CN2112883U Ceramic sleeve rotary insulating switch |
| 07/29/1992 | EP0496213A1 Circuit breaker, in particular circuit breaker with fuse |
| 07/29/1992 | EP0496212A1 Switch mechanism for an electrical switch |
| 07/15/1992 | CN2110282U Tontact moving type indoors isolation switch |
| 07/08/1992 | CN2109629U Positive device for isolated switch knife |
| 06/25/1992 | DE4041790A1 Metallic encapsulated switchgear filled with insulating gas - with bus=bar for each phase and entry for connection to mains also equipped with circuit breaker with quenching chambers filled with quenching gas and sealed |
| 05/27/1992 | CN1061488A Circuit break switch |
| 05/13/1992 | EP0485306A1 Multiphase rotating switch |
| 04/30/1992 | WO1992007373A1 Isolating switch |
| 04/29/1992 | EP0482549A1 Isolator with resistance insertion |
| 04/27/1992 | CA2054130A1 Resistor insertion disconnecting switch |
| 04/10/1992 | CA2052757A1 Manual operator for an electrical switch |
| 04/08/1992 | EP0479694A1 Current distribution device for electrical energy distribution board |
| 03/24/1992 | CA1297931C Electronic sectionalizer and mounting structure for switchgear |
| 03/18/1992 | EP0419468B1 High-tension switchgear with metal casing and compressed gas insulation and with an insulated earthing switch |
| 03/17/1992 | US5096438 Electrical distribution line control sticks |
| 02/25/1992 | US5091614 Disconnecting switch |
| 02/19/1992 | CN2096814U Fall type subsector |
| 01/22/1992 | EP0467797A1 High voltage circuit breaker |
| 01/20/1992 | CA2046692A1 High voltage disconnecting switch |
| 12/18/1991 | CN2091026U Inserted outdoor load switch |
| 12/10/1991 | US5072082 Electromagnetically locked contact blade |
| 11/19/1991 | US5066840 Manual operator for an electrical switch |
| 11/19/1991 | CA1292264C Drop-out explusion fuse |
| 11/06/1991 | EP0454961A2 Gas insulated switchgear for use in transformer distribution station |
| 10/30/1991 | CN1055840A Arrangement for gas insulating switch of network transformer substation |
| 10/29/1991 | US5061833 Compact disconnect switch having broadly variable current rating |
| 10/29/1991 | CA1291521C Power line working apparatus |
| 10/23/1991 | EP0452639A2 Metal-clad, gas-insulated switch gear for a compact transformer station in the middle range |
| 10/09/1991 | EP0450194A1 Switch drive mechanism |
| 09/26/1991 | DE4103101A1 Isolating switch for gas-insulated switchgear - has support for rotary location of switch blade and bearing for three=phase drive shaft and earth |
| 09/26/1991 | DE4008764A1 HV isolator or earthing switch for outdoor installation - has fixed contact system cooperating with swivel arm having contact fingers pushed on slide contact piece |
| 09/26/1991 | CA2013093A1 In-line switch |
| 09/03/1991 | US5045652 Disconnector of gas insulated switchgear |
| 09/02/1991 | WO1991013455A1 Sectionalizer with externally mounted electronic controller |
| 08/20/1991 | US5041808 Double load break switch and circuit |
| 08/14/1991 | EP0440933A1 Adaptor for a bus bar system |
| 07/24/1991 | CN2081565U High-voltage safety disconnecting switch in room |
| 07/24/1991 | CN2081564U Two-speed high-voltage cutting drop type automatic reclosing switch |
| 07/03/1991 | CN2080223U Six kilovolt anti-theft isolate switch |
| 05/18/1991 | WO1991007768A1 Isolator switch for metal-clad, compressed-gas-insulated high-voltage switchgear |
| 05/18/1991 | CA2068866A1 Isolator switch for metal-clad, compressed-gas-insulated high-voltage switch-gear |
| 05/07/1991 | US5013876 Switch contacts with improved fault-closing capability |
| 04/17/1991 | CN1050788A Ground switch for high-voltage switching equipment |
| 04/16/1991 | CA1283152C Disconnect switch for a metal-clad, gas-insulated high-voltage switching station |
| 04/04/1991 | DE4019686A1 Erdungsschalter fuer eine druckgasisolierte, metallgekapselte hochspannungsschaltanlage Earthing switch for a compressed-gas-insulated, metal high voltage switchgear |
| 04/03/1991 | EP0419468A1 High-tension switchgear with metal casing and compressed gas insulation and with an insulated earthing switch. |
| 03/28/1991 | WO1991005356A1 Earthing switch for a metal-encapsulated high-voltage switchboard plant insulated by pressurised gas |
| 03/12/1991 | US4999598 Three-position actuating mechanism for transfer switch |
| 03/07/1991 | DE4028174A1 LV high power safety load switch moulding |
| 03/07/1991 | DE3931660C1 Low voltage high power fused switch isolator - has electrically insulating over-reaching protection in isolator cover |
| 02/20/1991 | CN2071828U Rotary energy-accumulating high-tension isolating switch |
| 02/13/1991 | EP0412368A1 Switchboard of breaker accomodation type |
| 12/13/1990 | WO1990015428A1 Contact system for lever-operated isolating switches |
| 11/28/1990 | CN2066619U Through wall type intensive current high voltage isolating switch |
| 11/21/1990 | CN2066191U High-voltage isolating switch with earthed knife |
| 11/15/1990 | WO1990013932A1 Load switching device with a three-position switch |
| 11/15/1990 | DE3915948A1 Lastschaltanlage mit einem dreistellungsschalter Load switchgear with a three-position switch |
| 11/07/1990 | EP0395943A2 Hand operated protective interrupter |
| 10/10/1990 | EP0391339A2 High voltage switch gear |
| 10/10/1990 | EP0391313A2 Rotary medium high voltage multi-section switch |
| 09/19/1990 | CN2062490U Indoor high voltage isolate switch with earthed knife |
| 08/23/1990 | DE3911530C1 Connecting block |
| 08/22/1990 | CN2060942U Earth-contacting switch for high tension switch plant |
| 08/07/1990 | US4947148 Electrical cut-off device |
| 06/27/1990 | EP0374283A1 Electronic sectionalizer with resettable actuator |
| 06/19/1990 | US4935715 Sectionalizer with externally mounted electronic controller |
| 06/12/1990 | US4933519 Contact structure for grounding switch |
| 05/30/1990 | CN1042621A 断路器 Breaker |
| 05/16/1990 | EP0368249A2 Disconnecting switch |
| 02/22/1990 | WO1990001787A1 High-tension switchgear with metal casing and compressed gas insulation and with an insulated earthing switch |
| 02/15/1990 | DE3924906A1 Arrangement interlocking drives of two disconnectors in switchgear - uses parallel shafts with levers at ends coupled to disconnector rods and to interlock levers |
| 02/07/1990 | EP0354166A1 Gas-insulated high-voltage switchgear with an insulated grounding switch |
| 01/03/1990 | EP0348645A2 Device for the fast on and off switching of small currents for isolating switches of fully insulated switchgear |
| 12/13/1989 | CN2049410U Outlet system of isolating switch |
| 12/13/1989 | CN1006111B Disconnecting switch for gas-insulated switchgear |