| Patents for H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means (18,584) |
|---|
| 01/23/1990 | US4896008 Vacuum discharge device |
| 01/23/1990 | US4894988 Hydraulic system for operating switching or like devices |
| 01/18/1990 | DE3922991A1 Electrical gas-blast circuit breaker |
| 01/10/1990 | CN2051012U Separate assembly type vacuum circuit breaker |
| 01/10/1990 | CN1006426B Vacuum breaker |
| 01/09/1990 | US4892986 Vacuum circuit breaker |
| 01/04/1990 | DE3824325A1 Method and device for non-live remote control of a switch in an electrical circuit, and an electrical plug connector for this purpose |
| 01/03/1990 | EP0349303A2 Vacuum interrupter |
| 01/03/1990 | EP0348645A2 Device for the fast on and off switching of small currents for isolating switches of fully insulated switchgear |
| 01/03/1990 | CN1038544A Enclosed load-break switch unit |
| 01/02/1990 | CA1264176A1 Multiple-impact shock absorbing means for circuit interrupter and other apparatus |
| 12/28/1989 | DE3822311A1 Method and device for currentless remote control of a switch in an electrical circuit and remote-control switch therefor |
| 12/26/1989 | US4889504 Electric coupling device, a circuit-breaker equipped therewith and a related assembly of components |
| 12/21/1989 | DE3820489A1 Encapsulated switch disconnector arrangement |
| 12/20/1989 | EP0347173A2 Expulsion fuse |
| 12/20/1989 | EP0346805A1 Method of gas inflation complement for a compressed insultating gas electric switch gear |
| 12/20/1989 | EP0346603A1 Vacuum circuit breaker |
| 12/20/1989 | EP0346411A1 High-current switch |
| 12/20/1989 | CN1038188A Medium-voltage electric switch with sealed case |
| 12/19/1989 | US4888458 Apparatus for disconnecting a switch of a high voltage electric circuit |
| 12/19/1989 | US4887511 Hydraulic control valve apparatus |
| 12/13/1989 | EP0346249A1 Low-voltage current-limiting circuit breaker with a sealed arc chamber |
| 12/13/1989 | CN1006112B Sulfur hexafluoride circuit breaker operating in a very low temp. environment |
| 12/13/1989 | CN1006111B Disconnecting switch for gas-insulated switchgear |
| 12/12/1989 | US4886945 Replaceable bushing and contact assembly for blade type air insulated switchgear |
| 12/06/1989 | EP0344744A2 Disconnector of gas insulated switchgear |
| 12/06/1989 | EP0211031B1 Interrupter/isolator |
| 12/05/1989 | US4885442 Contact element |
| 11/30/1989 | DE3901823A1 Vacuum switching tube |
| 11/29/1989 | EP0343663A2 Vacuum interrupter contacts and process for producing the same |
| 11/29/1989 | EP0343274A1 Heavy current circuit breaker particularly for agressive environment such as short-circuiter for electrolysis installations |
| 11/29/1989 | CN1005942B Compressed dielectric gas high-tension circut breaker |
| 11/28/1989 | US4883931 High pressure arc extinguishing chamber |
| 11/28/1989 | US4883930 Switch mechanism operating rod |
| 11/28/1989 | CA1263469A1 Electric switch for protector apparatus such as a breaker |
| 11/23/1989 | EP0342603A2 Vacuum circuit breaker |
| 11/23/1989 | EP0342597A2 Abnormality system for a high voltage power supply apparatus |
| 11/23/1989 | EP0342260A1 Flexible coupling for an intermittent system such as a switch system |
| 11/23/1989 | DE3815805A1 Vacuum switch |
| 11/22/1989 | CN2048236U Air isolated reversing switch for coal mine |
| 11/15/1989 | EP0341690A2 Switch with contacts |
| 11/15/1989 | CN1037233A 断路器 Breaker |
| 11/15/1989 | CN1037232A 真空断路器 Vacuum Circuit Breaker |
| 11/14/1989 | US4880947 Vacuum interrupter with simplified enclosure and method of assembly |
| 11/14/1989 | US4880946 High-or medium-tension compressed-gas circuit breaker taking circuit-breaking energy from the arc |
| 11/09/1989 | DE3905146A1 Unterbrechervorrichtung Breaker device |
| 11/07/1989 | US4879441 Dielectric barrier for a vacuum interrupter |
| 11/01/1989 | CN1036861A Blow arc-extinguishing mode circuit breaker |
| 10/31/1989 | US4877929 Breaking device for multipole electrical circuit breaker with multiple contacts |
| 10/31/1989 | US4877928 Release mechanism for a high speed circuit breaker |
| 10/26/1989 | DE3822410C1 Sulphur hexa:fluoride compressed gas switch - has thread between nozzle and cylinder to better withstand force and temp. loading without enlargement of actual mass of nozzle |
| 10/25/1989 | EP0338374A2 Process and means to control the driving mechanism of a medium or high voltage circuit breaker |
| 10/25/1989 | CN1036659A High tension circuit breaker with low operating energy |
| 10/24/1989 | US4876424 Barrier with a venting scheme for a circuit breaker |
| 10/19/1989 | WO1989009998A1 Short-circuiting switch and electromagnetic projectile launcher incorporating the switch |
| 10/19/1989 | DE3915519A1 Axial magnetic field contact arrangement for vacuum switches |
| 10/19/1989 | DE3910010A1 Vacuum disconnecting switch |
| 10/19/1989 | DE3907897A1 Vacuum switch having external axial magnetic field excitation |
| 10/19/1989 | DE3811833A1 Vacuum switching tube |
| 10/11/1989 | CN2045892U Explosion-proof vacuum magnetic force starter |
| 10/10/1989 | US4872322 Power operated contact apparatus for superconductive circuit |
| 10/05/1989 | DE3914967A1 Vacuum switch having an external axial magnetic field generating device |
| 10/04/1989 | EP0335338A2 Circuit breaker |
| 10/04/1989 | EP0335114A2 Housing for a vacuum switch |
| 10/04/1989 | EP0335002A2 Automatic transfer switch |
| 10/03/1989 | US4871889 Arcing contact assembly for a circuit breaker |
| 10/03/1989 | US4871888 Tubular supported axial magnetic field interrupter |
| 10/03/1989 | CA1262164A1 Arrangement for providing independent rotary and linear drive outputs for high-voltage switches |
| 10/03/1989 | CA1262163A1 Arrangement for providing various circuit protection device configurations |
| 10/03/1989 | CA1262162A1 Circuit breaker with visible trip indicator |
| 09/27/1989 | EP0334181A1 High-tension switch with a reduced driving energy |
| 09/27/1989 | EP0334008A2 Single-pressure switch with SF6 |
| 09/27/1989 | CN2045145U Elevator for oil tank |
| 09/26/1989 | CA1261379A1 Operator for interrupters and disconnect mechanisms |
| 09/26/1989 | CA1260048A1 Circuit breaker with axial slotted rod arcing contact |
| 09/26/1989 | CA1260047A1 Sulphur hexafluoride breaker for outdoor use at very low temperatures |
| 09/26/1989 | CA1260046A1 Disconnect switch for metal-clad, pressurized gas- insulated high-voltage switchgear with damping resistors |
| 09/13/1989 | CN2044373U Oil releasing screw for less oil breaker bottom |
| 09/12/1989 | US4866227 Sealed contact device |
| 09/12/1989 | US4866226 Multi-phase circuit breaker employing arc extinguishing apparatus |
| 09/12/1989 | US4866225 Insulated light weight metallic crossbar in polyphase circuit breaker assemblies for inhibiting arcing |
| 09/12/1989 | US4864911 Muzzle switch for an electromagnetic launcher |
| 09/12/1989 | CA1259366A1 Hydro pole switch assembly |
| 09/06/1989 | EP0331587A1 Electric circuit breaker using self-blasting by compression or expansion of an insulating gas |
| 09/06/1989 | CN1035390A Insulator type gas-break switch |
| 09/05/1989 | US4864286 Switch operation monitoring apparatus |
| 09/05/1989 | US4863392 High-voltage loadbreak bushing insert connector |
| 08/29/1989 | US4862313 Driving apparatus for DC circuit breakers |
| 08/23/1989 | EP0329410A2 Vacuum interrupter |
| 08/23/1989 | EP0328778A1 High power switch |
| 08/23/1989 | CN1035028A 大功率开关 Power switch |
| 08/22/1989 | US4859819 Staged opening switch |
| 08/17/1989 | DE3803778A1 Vacuum switch with flat or corrugated elastic disc. - used as intermediate piece between fixed-contacts bolt and casings ceramic tube |
| 08/17/1989 | DE3803117A1 Circuit breaker (current interrupter) for encased switching stations filled with an insulating gas |
| 08/16/1989 | EP0327894A1 Magnetic control drive |
| 08/10/1989 | DE3803066A1 Vacuum switching tube |
| 08/10/1989 | DE3803065A1 Vacuum switching tube |
| 08/09/1989 | CN1034633A Rotary switch with curved surface guiding means for transferring arc-root |
| 08/08/1989 | US4855547 Vacuum interrupter |
| 08/08/1989 | US4855546 Vacuum operated circuit breaker |