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| Number | Title | Issue Date |
| 8063333 | Limited flash-over electric power switch A limited flash-over electric power switch uses a dielectric gas regulator and a flash-over arrestor to greatly diminish the occurrences of high voltage flash-over during operation of a circuit interrupter. The dielectric gas regulator prevents the flow of the diele... | 11/22/2011 |
| 7202435 | Circuit-breaker An exemplary circuit breaker includes at least one arcing chamber that is filled with isolating gas, extends along a longitudinal axis, is designed to be essentially radially symmetrical, contains an arc area and has at least two power contact pieces. At least one o... | 04/10/2007 |
| 7134889 | Separable insulated connector and method A separable insulated connector provides a current path for high-energy distribution between a power transmission or power distribution apparatus and an elbow connector. As gases and conductive particles exit the separable insulated connector during loadbreak switch... | 11/14/2006 |
| 7115831 | Vacuum interrupter with a switch contact piece According to the invention, heat generated inside a vacuum interrupter (1) is to be extracted, essentially by means of the pins (7, 8) of the contact pieces (5, 6) and, in order to improve the transmission of heat, a first slide contact surface ... | 10/03/2006 |
| 6919785 | Pressure sensitive trip mechanism for a rotary breaker A pressure sensitive trip mechanism for actuating a circuit breaker operating mechanism to trip a circuit breaker includes a trip lever and a trip bar. The trip lever is rotatable about a first pivot. The trip bar is positioned proximate the trip lever. The trip bar... | 07/19/2005 |
| 6872907 | Circuit-breaker This circuit-breaker has at least one arcing chamber which is filled with isolating gas, extends along a longitudinal axis, is designed to be essentially radially symmetrical, contains an arc area and has at least two power contact pieces. At least one of the power ... | 03/29/2005 |
| 6744001 | High-voltage circuit-breaker including a valve for decompressing a thermal blast chamber A high-voltage circuit-breaker including a valve for decompressing a thermal blast chamber includes two contacts disposed in a breaking space which is delimited by a blast nozzle and contains a dielectric gas. It further includes a thermal blast chamber which commun... | 06/01/2004 |
| 6730871 | Compressed gas-blast circuit breaker A hollow contact tube is provided in a compressed gas-blast circuit breaker in order to improve dielectric properties. The outlet (6) of said contact tube cooperates with a deflecting body (9) and is surrounded by a fixed substantially hollow cylindric... | 05/04/2004 |
| 6207918 | Compressed gas power switch The invention relates to a compressed gas switch with two contact pieces, a contact element by-passing the contact pieces when in the on position, and two isolating distances connected to each other in series. The second contact piece opposing the first i... | 03/27/2001 |
| 5898150 | Gas-blast high-voltage circuit-breaker A gas-blast circuit-breaker includes a jacket filled with a dielectric gas. A mobile arc contact cooperates with a fixed arc contact within the jacket. The mobile arc contact is part of a mobile contact assembly which is displaceable axially in the jacket... | 04/27/1999 |
| 5898149 | Power circuit-breaker This power circuit-breaker has at least one cylindrically constructed arcing chamber which is provided with a stationary contact, with a moving contact and with a quenching zone between the two contacts. A shaft of the moving contact is permanently connec... | 04/27/1999 |
| 5808257 | High-voltage gas-blast circuit-breaker A gas-blast gas-insulated high-voltage circuit-breaker comprises a fixed main contact, a fixed arc contact and a mobile assembly comprising a main contact, an arc contact and a compression volume cooperating with a fixed piston and communicating with a bl... | 09/15/1998 |
| 5589673 | Electric high-tension circuit breaker A self-blow-out switch having a compression device has a pressure chamber heated by electric arc energy connected to a compression space, optionally with valve control. The compression space is connected to a low-pressure space via a pressure relief valve... | 12/31/1996 |
| 5561280 | Compressed gas-blast circuit breaker A compressed gas-blast circuit breaker including a pump cylinder which is moved along with a movable first contact piece. The pump cylinder surrounds a pumping space and a blast chamber, the latter of which is fluidly connected to a first blast nozzle sur... | 10/01/1996 |
| 5296661 | Hybrid circuit-breaker for interrupting currents having high dc components A hybrid circuit-breaker for interrupting currents having high DC components, said hybrid circuit-breaker comprising a compressed-air circuit-breaker that re-closes automatically, and a sulfur hexafluoride circuit-breaker, the circuit-breakers being dispo... | 03/22/1994 |
| 5258588 | Puffer type switch high current electrical switch contact assembly The electrical switch according to the present invention has first and second electrical contacts each of which functions as both male and female contacts. More specifically, the first electrical contact includes a first electrical contact member having o... | 11/02/1993 |
| 5160818 | Series-arc high tension circuit-breaker A dielectric gas arc-blasting high tension circuit-breaker of the type including secondary arcing contacts enables pressure upon secondary arcing to be developed inside a secondary volume defined by two concentric tubes and a pair of axially spaced piston... | 11/03/1992 |
| 5159164 | Gas circuit breaker A gas circuit breaker comprising a pair of contactors separable from each other, an insulating nozzle surrounding the contact portions of the contactors so as to guide a flow of gas, and a puffer chamber for compressing the gas in conjunction with a separ... | 10/27/1992 |
| 5153397 | Gas circuit breaker A gas circuit breaker comprising: a pair of contactors having separable contact portions, a nozzle arranged to surround the contact portions of the contactors so as to guide a flow of a gas; a puffer chamber for compressing the gas in response to a circui... | 10/06/1992 |
| 5126516 | Puffer-type medium or high tension circuit breaker A medium or high tension arc-puffing circuit breaker comprising a gastight casing filled with a dielectric gas and containing a semi-fixed first contact electrically connected to a first current terminal and a moving second contact which is electrically c... | 06/30/1992 |
| 5105058 | Dielectric blast gas high voltage circuit breaker with electrical resistance conductor A high or medium tension circuit-breaker having a dielectric gas, the circuit-breaker including stationary and moving main contacts, and a conductor element having high electrical resistance, with the current to be interrupted being constrained to flow th... | 04/14/1992 |
| 5095183 | Gas-blast electrical circuit breaker A pole-unit of a gas-blast electrical circuit breaker comprises a tranverse partition made of injected insulating plastic material which at the same time performs guiding of the movable contact which passes through it. The injected material part bears an ... | 03/10/1992 |
| 5079392 | Gas circuit breaker A gas circuit breaker comprising a pair of contactors contact portions of which are separable relatively from each other, an insulating nozzle of an electrically insulating material surrounding the contact portions of said contactors so as to guide a flow... | 01/07/1992 |
| 4983791 | High tension circuit breaker having a dielectric blast gas A high tension circuit breaker insulated by an arc blasting dielectric gas and comprising, inside a gastight insulating housing: a fixed assembly comprising, in particular, a fixed main contact and a fixed arcing contact; a moving assembly driven by a dri... | 01/08/1991 |
| 4950855 | Self-expansion electrical circuit breaker with variable extinguishing chamber volume A self-expansion electrical circuit breaker includes an arc extinguishing chamber of variable volume by repulsion of a piston by the pressure of the gas in the extinguishing chamber. A semi-stationary contact is securedly united to the piston so as to inc... | 08/21/1990 |
| 4658108 | Gas-blast switch A gas-blast switch, preferably suitable for switching high voltages, has two arc contacts which can be moved relatively to each other along an axis. Also included are a heating volume and a compression volume concentrically formed around the axis. Quenchi... | 04/14/1987 |
| 4650942 | Compressed gas high tension circuit breaker, requiring low operating energy The invention relates to a compressed gas high tension circuit breaker requiring low operating energy. The circuit breaker is located in a gas tight enclosure filled with gas having high dielectric power, and comprises a fixed assembly including a main co... | 03/17/1987 |
| 4563556 | Internal combustion circuit breaker An internal combustion electrical circuit breaker comprising at least one: (a) insulating cylinder; (b) pair of electrical conductors penetrating the cylinder approximately perpendicular to its longitudinal axis at a distance from both cylinder's plane si... | 01/07/1986 |
| 4517425 | Self-flow generating gas interrupter A unique self-flow generating gas interrupter of the type wherein arc-extinction is performed by the creation of a negative pressure region brought about by the separation of the interrupter contacts. The interrupter incorporates a novel arrangement of va... | 05/14/1985 |
| 4491706 | Circuit breaker with means for producing a flow of arc-extinguishing gas A puffer type circuit breaker is provided with a pump means consisting of a piston and a cylinder for producing a blast of arc-extinguishing gas. The movable arcing contact of the circuit breaker and the cylinder are connected to an operating device via a... | 01/01/1985 |
| 4489226 | Distribution class puffer interrupter An interrupter is provided having: an outer enclosure or tank adapted to contain an arc-extinguishing fluid; a fixed tubular electrical current carrying member disposed at one end of the tank; a movable tubular current carrying member disposed in the tank... | 12/18/1984 |
| 4459447 | Self extinguishing type gas circuit breaker A self extinguishing type gas circuit breaker includes a body member having a first end connected to a terminal plate and a second end with a nozzle formed of electrical insulation material and defining a nozzle opening in communication with the interior ... | 07/10/1984 |
| 4458120 | High-voltage circuit breaker A high-voltage circuit breaker having a fixed contact and a movable contact also has a piston/cylinder system for generating a quenching gas flow to extinguish an arc during a switching action. The piston of the piston/cylinder system is connected to the ... | 07/03/1984 |
| 4433293 | Method and apparatus for detecting abnormal conditions of circuit breakers Abnormal conditions of a tank type gas circuit breaker are detected by driving a movable contact with a drive force and at a speed respectively lower than normal drive force and speed. Measuring units are mounted on various portions of a casing of the cir... | 02/21/1984 |
| 4383151 | Operating mechanism for a fluid blast circuit interrupter An operating mechanism for a fluid blast circuit interrupter which is actuated by a single drive shaft and includes a toggle linkage for opening and closing the breaker contacts, and a cam and rachet assembly for opening and closing a gas supply valve. Up... | 05/10/1983 |
| 4368367 | Gas-blast switch A fixed contact element and a movable contact element can be brought into and out of engagement with one another within a switching chamber. The switching chamber flow communicates, on the one hand, by means of a blast nozzle, closed by the movable contac... | 01/11/1983 |
| 4327262 | Gas-blast switch A gas-blast switch containing both a stationary and a movable contact element. At one of these contact elements there is arranged a blast nozzle whose inlet chamber or compartment is connected with the outlet of a pump chamber containing an extinguishing ... | 04/27/1982 |
| 4302645 | Gas-blast switch A gas-blast switch having a housing composed of a hollow insulator body. Within such housing there are arranged a set of fixed contacts and a set of movable contacts surrounded by a blast chamber as well as a blast nozzle operatively associated with the s... | 11/24/1981 |
| 4293750 | Electric gas blast circuit breaker The circuit breaker contains a contact system and a blast device. The blast device produces a flow of quenching gas required for the quenching of the switch-off arc in the contact system. The blast device, which is assigned to the contact system, includes... | 10/06/1981 |
| 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 |
