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| Number | Title | Issue Date |
| 6926547 | Electrical connector An arc quenching electrical connector has a male pin terminal which inserts longitudinally into a receptacle or terminal having a gassing wall engaged concentrically about the receptacle. During “hot unplugging” of the electrical connector, an arc is carried bet... | 08/09/2005 |
| 6696657 | Puffer type gas circuit breaker A puffer type gas circuit breaker wherein an insulated nozzle made of heat proof resin and a movable arc contact are mounted on a puffer cylinder to perform an open/close operation of the contact. The insulated nozzle is divided into three areas of a down... | 02/24/2004 |
| 6646850 | High-voltage power breaker having an outlet flow channel A high-voltage power breaker includes two arcing contact pieces which are separated from one another when disconnected and between which an arc is struck in an arcing area. The arcing area is filled with a quenching gas, where the quenching gas has been h... | 11/11/2003 |
| 6472629 | Puffer switch having a two-volume break chamber An electric switch includes a first arcing contact surrounded by a puffer break chamber in which the gas is pressurized by the thermal effect, and a second arcing contact movable along an axial direction relative to the first arcing contact. The break cha... | 10/29/2002 |
| 6462295 | High-voltage power circuit breaker comprising an insulating nozzle In a high-voltage power breaker having two rated current contact pieces and two arc contact pieces as well as an insulating nozzle, a filling body is provided, which is mounted on this insulating nozzle, surrounds the insulating nozzle in an annular shape... | 10/08/2002 |
| 6040970 | Interrupter unit of a high-voltage power circuit breaker An interrupter unit of a high-voltage circuit breaker has two arcing contacts, between which an arc is formed in the event of switch-off. A nozzle made of insulating material is provided for blowing out the arc. The nozzle made of insulating material is s... | 03/21/2000 |
| 5905243 | Power breaker This power breaker has an arcing chamber which is filled with an insulating medium and extends along a central axis (2). This arcing chamber is provided with a power current path which has two erosion contact arrangements (5, 6) which are arranged on the ... | 05/18/1999 |
| 4685019 | Controlled electrical contacts for electrical switchgear Most contacts that are used in electrical switchgear are prone to erosion due to electrical arcs that are developed at the make and break of a circuit. Arcing is one of the major problems that can cause catastrophic failure of switchgear. In accordance wi... | 08/04/1987 |
| 4224490 | Fluid blast circuit breaker The contacts and nozzle of a fluid blast circuit breaker are constructed to have a cross section with a shape other than circular or square. Such cross section facilitates providing the fluid for extinguishing an arc in a circuit breaker at a velocity per... | 09/23/1980 |
