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| Number | Title | Issue Date |
| 7102101 | High voltage circuit breaker with internal tank heater A high voltage circuit breaker with a gas-insulated tank is provided. Enclosed with the tank is an elongated heater having at least one heating element enclosed in an outer tube. The heater is located coaxially within the tank and is surrounded by the insulating gas... | 09/05/2006 |
| 6492609 | Power station switch with a radiator/heat-exchanger A power station switch having high nominal current, the switch comprising a break chamber containing a dielectric gas under pressure and mounted inside a protective sheath which may optionally carry a general flow of cooling air, and a radiator/heat-excha... | 12/10/2002 |
| 6236562 | Section of a high-voltage system having cooling means and including a conductor The section of an electrical high-voltage system has a gas-filled housing of predominantly symmetrical design. Provided in the housing are a conductor extending along a plane of symmetry of the housing, and cooling means for producing a circulation flow w... | 05/22/2001 |
| 4845378 | Emp generator The present invention relates to a generator concept by means of which, in particular, the effects of so-called nuclear electromagnetic pulses on electrical or electronic devices can be simulated by applying the so-called current injection technique. In t... | 07/04/1989 |
| 4829149 | Sulfur hexafluoride high-tension circuit-breaker having high performance at any temperature In a sulfur hexafluoride high-tension circuit-breaker, a condenser/evaporator (8), disposed beneath and in communication with the inside of a support column, is partially filled with an insulating material (11), having at least one well (10) formed therei... | 05/09/1989 |
| 4755719 | Spark gap switch with jet pump driven gas flow A spark gap switch is disclosed with a pumping system which utilizes flowing gas to replenish the interelectrode region between conductive pulses. The spark gap switch typically consists of a housing enclosing a gas filled chamber in which there are two e... | 07/05/1988 |
| 4698468 | Sulphur hexafluoride circuit breaker usable at very low outside temperatures A sulphur hexafluoride circuit breaker usable at very low outside temperatures, the circuit breaker comprising: a sealed enclosure containing a fixed contact assembly and a moving contact assembly; a drive rod for driving the moving contact assembly, said rod ... | 10/06/1987 |
| 4698469 | Sulfur hexafluoride circuit breaker operating in a very low temperature environment A high pressure circuit breaker comprising a sealed enclosure (1) having a fixed assembly (10) and a moving assembly (20) disposed therein, said fixed assembly and said moving assembly each including a respective main contact and a respective arcing conta... | 10/06/1987 |
| 4434335 | Compressed-gas circuit interrupter with a heater A compressed-gas circuit interrupter includes a chamber in which SF6 gas is confined, shield members surrounding arc-extinguishing assemblages and heat transfer members connected to the shield members at their ends. Electric heaters are provide... | 02/28/1984 |
| 4336414 | Method and apparatus for treating noxious gases Disclosed is a process and apparatus for treating noxious gases and/or substances which are produced by virtue of an electric arc in the event of a switching operation or due to corona discharge. A gas insulated electrical apparatus is connected to a cont... | 06/22/1982 |
| 4326867 | Gas recovery A gas recovery method and apparatus for the recovery and storage of a gas from a gas enclosure or circuit particularly for the recovery of sulphur hexafluoride (SF6) from the arc chamber of a high voltage/current circuit breaker. A gas bottle i... | 04/27/1982 |
| 4274851 | Gas recovery of sulphur hexafluoride A gas recovery method and apparatus for the recovery and storage of a gas from a gas enclosure or circuit particularly for the recovery of sulphur hexafluoride (SF6) from the arc chamber of a high voltage/current circuit breaker. A gas bottle i... | 06/23/1981 |
| 4273978 | Liquid interrupter module The invention provides a current interrupter employing a liquified dielectric medium such as sulfur hexafluoride to effect rapid arc extinction. A pump cylinder forces the dielectric liquid into the vicinity of a fixed contact. The pump cylinder is refill... | 06/16/1981 |
| 4208556 | Force convection heat pump and temperature measuring system for a gas insulated two pressure breaker A heating system within a high pressure gas enclosure which includes a heat emission block surrounded by an insulating tube to form a forced flow convection pump; temperature probes within the high pressure gas enclosure are located so that they will not ... | 06/17/1980 |
| 4080521 | Quenching contact arrangement for a compressed-gas circuit breaker The invention is directed to a quenching and contact arrangement for a compressed-gas circuit breaker. The arrangement includes a tubular contact piece and a contact piece axially arranged therewith. An arc is drawn between both contact pieces when the ci... | 03/21/1978 |
| 4006332 | Convection heating apparatus for multi-phase gas-type circuit interrupters An improved gas-heating means is provided for a multi-phase gas-type circuit-interrupter, all phases being supplied with high-pressure gas from a single high-pressure reservoir tank by suitable baffling means spaced longitudinally along the high-pressure ... | 02/01/1977 |
| 4005345 | Multi-phase gas-type circuit-interrupter substitution modular construction A simplified-type of multi-phase compressed-gas circuit-interrupter installation is provided in which costly and complicated I-beam base structures are eliminated, and the low-pressure gas-reservoir tank is so used and located as to provide a lower main s... | 01/25/1977 |
| 3985987 | Means for recycling liquified insulating gas in a gas insulated circuit breaker Liquid SF6 from the high pressure storage tanks within the gas sealed enclosure of a multi-interrupter gas insulated circuit breaker is collected in a tank located externally of the circuit breaker enclosure. A float within the liquid collectin... | 10/12/1976 |
