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| Number | Title | Issue Date |
| 7820933 | Puffer circuit breaker with an overpressure valve A circuit breaker comprises a puffer volume (9) and at least one overpressure valve (16) for discharging gas from the puffer volume (9), if the pressure therein exceeds a given threshold. The overpressure valve (16) is formed by a piston ... | 10/26/2010 |
| 7215412 | Flagpole reflectors for laser range finders A system and method are provided for determining a distance to a target. The method includes sending light, at a first time, to a light reflector mounted in a reflector device, receiving light reflected from the light reflector at a second time, and determining the ... | 05/08/2007 |
| 7022922 | Power switch with a mobile contact element and extinction gas flow that move in an axial direction when activated The invention relates to a power switch (100) that comprises a contact element (105, 107) mobile in an axial direction and an extinction gas flow that moves in said axial direction when the switch is actuated. Said extinction gas flow is coaxially surr... | 04/04/2006 |
| 6831828 | Gas-insulated switchgear A compact and economical gas-insulated switchgear is provided. The gas-insulated switchgear includes: a grounding metal housing 1 filled with insulating gas, and in which the disconnector part 2 having a moving side electrode part 2a and ... | 12/14/2004 |
| 6489581 | Arc-blasting switch possessing a break chamber with low gas compression and reciprocating piston movement The arc blast switch can have single or dual contact movement and possesses a break chamber with low gas compression, the switch includes a first contact and a second contact, the first contact being movable in a longitudinal axis and being secured to the... | 12/03/2002 |
| 6472628 | Circuit-breaker including a moving assembly contained inside a casing filled with a dielectric gas under pressure A circuit-breaker including a first tube, and a second tube coaxial to the first tube, the first and second tubes being connected together via a piston provided with perforations and equipped with a valve member, the first tube having an end connecting to... | 10/29/2002 |
| 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 |
| 6107590 | Circuit-breaker with an explosive charge ignited during opening operation Extending between a fixed tulip contact (1) and a slide tulip (4) is an arcing chamber (5) which is occupied in the closed position by a movable contact pin (3) which fills up both an exhaust (9) surrounded by the slide tulip (4) and a blowout opening (7)... | 08/22/2000 |
| 6064025 | Control means for electrical equipment, E.G. for a high-voltage circuit-breaker A controller for electrical equipment, in particular for a high-voltage circuit-breaker, the equipment being housed in a casing filled with a dielectric gas under pressure. An interrupting chamber within the casing extinguishes arcs produced by the main c... | 05/16/2000 |
| 5977502 | Gas circuit breaker The gas circuit breaker has a configuration such that a stationary contact section and a movable contact section are arranged in an arc-extinguishing gas sealed container, to face each other, and the movable contact section includes a hollow operating rod... | 11/02/1999 |
| 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 |
| 5877465 | High-tension circuit-breaker with damper A high-tension circuit-breaker includes fixed contacts and a mobile assembly including mobile contacts. The mobile assembly is connected to an operating mechanism by an operating rod. The circuit-breaker includes a device for damping movement of the rod a... | 03/02/1999 |
| 5859399 | Circuit breaker having semi-moving piston A puffer type circuit breaker comprising a compression chamber closed by a pressure wall of a semi-moving piston, a first mechanism for preventing the piston from moving during a first portion of the opening displacement of the moving contact assembly, an... | 01/12/1999 |
| 5814781 | Puffer type gas circuit breaker A puffer type gas-blast circuit breaker includes a guide section arranged at a coupler section between a shaft section of a puffer cylinder and a dielectric operating rod, for guiding both in the axis direction of a current interruption section and in the... | 09/29/1998 |
| 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 |
| 5783791 | Gas insulated interrupter A puffer-type gas insulated interrupter has stationary and moving main contacts, stationary and moving arc contacts for discharging an arc, and a puffer cylinder for electric arc suppression. At the time of current interruption, the puffer cylinder moves ... | 07/21/1998 |
| 5767471 | Pressurized gas circuit-breaker In a pressurized gas circuit-breaker the mobile contact member is fixed to a connecting rod that passes coaxially through the fixed braking cylinder. The braking cylinder has transverse walls at both ends so as to delimit a cylinder. The connecting rod ha... | 06/16/1998 |
| 5742016 | Electrical gas-blast switch In a gas-blast switch with a compression device with a compression piston and a compression cylinder, at least one of which can be moved by the drive during the cut-off process, starting from a cut-in position, reducing a compression space delimited by th... | 04/21/1998 |
| 5723840 | Gas-dielectric high-tension interrupter of the arc-puffer type A gas-dielectric high-tension interrupter of the arc-puffer type in which the puff of gas is brought about by the combined effect of an excess pressure developed in a compression chamber and intensified by the heating caused by the arc radiation, which is... | 03/03/1998 |
| 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 |
| 5587571 | Combined-action puffer circuit-breaker The present invention relates to a circuit-breaker including, inside a casing filled with a dielectric gas, a first arcing contact connected to a first terminal, and a second arcing contact having the same longitudinal axis as the first contact. The secon... | 12/24/1996 |
| 5567923 | Puffer circuit-breaker having a pneumatically-locked semi-moving piston The present invention relates to a puffer-type circuit-breaker including two arcing contacts that cooperate with each other, at least one of which is part of a moving contact assembly constituted by a first tube and a second tube that is coaxial with the ... | 10/22/1996 |
| 5543597 | Grounding switch gear device A first puffer chamber is formed by a puffer cylinder having a substantially cylindrical flange portion and a shaft portion, and a fixedly disposed piston. The piston is formed in a cylindrical shape sealed with respect to an external space, and is consti... | 08/06/1996 |
| 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 |
| 4650941 | Compressed gas, high tension circuit breaker, with operating energy assisted by the thermal effect of the arc The invention relates to a compressed gas high tension circuit breaker in which the energy required for operation is assisted by the thermal effect of the arc, the circuit breaker comprising fixed main contacts and fixed arcing contacts, a moving assembly... | 03/17/1987 |
| 4577073 | Electrical circuit breaker with arc extinguishing compressed fluid The present invention relates to an electrical circuit breaker with arc extinguishing compressed fluid, in which the compression of the extinguishing fluid is caused in a mixed way, by the pneumatic action of a compressing piston solid with the movable co... | 03/18/1986 |
| 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 |
| 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 |
| 4445018 | Energy efficient floating head puffer interrupter A unique, energy efficient puffer interrupter having a puffer piston and an opposed floating piston or head is described in detail. In one embodiment, the puffer interrupter is formed from a pair of electrical contacts which are disposed within a chamber ... | 04/24/1984 |
| 4414445 | Liquid SF6 interrupter with proportional feedback A liquid SF6 interrupter is disclosed comprising a housing containing a pair of pistons operable for movement in tandem. Stationary and movable contact assemblies are disposed between the pistons. At the beginning of the opening stroke of the i... | 11/08/1983 |
| 4389554 | Transformer protective switch An electric switch includes a pair of separable contacts operable between open and closed positions with respect to each other. An operator shaft is utilized for moving one of the contacts, and the operator shaft has attached thereto at the opposite end a... | 06/21/1983 |
| 4328403 | Single barrel puffer circuit interrupter A single barrel puffer circuit interrupter is taught. The single barrel accomplishes the multiple purposes of electrical insulation between terminals, basic support and puffer gas containment. The circuit interrupter has a movable nozzle-piston arrangemen... | 05/04/1982 |
| 4264794 | Circuit interrupter including arc extinguishing fluid pressurization means and pressure accumulating means A circuit interrupter comprising an interrupting unit including an arc extinguishing chamber containing an arc extinguishing fluid and a pair of separable contacts disposed within the arc extinguishing chamber. The interrupter also comprises a fluid press... | 04/28/1981 |
| 4219712 | High compression puffer circuit interrupter A circuit interrupter characterized by a pair of separable contacts which establish an arc upon separation, means for directing a blast of arc interrupting gas into the zone between the separating contacts to extinguish the arc and comprising a cylinder m... | 08/26/1980 |
| 4209680 | High speed actuating mechanism A high speed actuating mechanism for operating the contacts of a circuit interrupter has an operating shaft connected to the contacts and to an operating piston. The operating piston has a short-circuited conductive ring or repulsion disc which is closely... | 06/24/1980 |
| 4144426 | Single barrel puffer circuit interrupter with downstream gas coolers A single barrel puffer circuit breaker apparatus is taught in which compressed sulfur hexafluoride gas is forced into the region of an arc. The arc is struck between hollow, cylindrical conductors during a circuit breaker opening operation. The heated gas... | 03/13/1979 |
| 4059741 | Puffer type gas circuit breaker Two puffer type circuit breaking units are symmetrically disposed with respect to a bracket interposed therebetween. Linking means are mounted in the bracket, and one end of the linking means is connected to movable parts of the puffer type circuit breaki... | 11/22/1977 |
| 4041263 | Electric circuit interrupter of the puffer type comprising a magnetically actuated piston A puffer-type circuit interrupter comprises a cylinder coupled to the conductive contact rod of the interrupter and a floating piston within the cylinder that is relatively movable with respect to the cylinder to pressurize fluid in the cylinder, which pr... | 08/09/1977 |
| 3987262 | Puffer-type gas-blast circuit-interrupter having variable-area stationary composite piston structure A puffer-type gas-blast circuit-interrupter is provided having an operating cylinder movable over a fixed composite piston structure, the fixed composite piston structure providing a variable cross-sectional area by means of a secondary piston area, prefe... | 10/19/1976 |
