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| Number | Title | Issue Date |
| 7919720 | Earthing switch In an earthing switch a release mechanism releases pressure stored in a puffer type arc cancelling chamber by releasing the chamber at a predetermined area toward a stationary contact unit during a full stroke extent of a movable contact unit so that the puffering o... | 04/05/2011 |
| 7321281 | Hermetically sealed relay having low permeability plastic housing A high voltage relay comprises a hermitically sealed housing made of ethylene vinyl alcohol (EVOH) and having internal components for changing the state of said relay. Terminals are electrically connected to the internal components for connection to external circuit... | 01/22/2008 |
| 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 |
| 6740837 | Contact zone for a power breaker A contact zone (1) of a quenching chamber which is arranged rotationally symmetrical about a central axis (2) and is filled with an insulating medium, having at least two stationary consumable contacts which are in the form of contact rings (4, 15 | 05/25/2004 |
| 6483064 | Insulating blast nozzle for a circuit breaker An insulating blast nozzle for a circuit breaker, the circuit breaker having a first arcing contact and a second arcing contact that separate from each other when the circuit breaker is opened subsequent to prior separation of permanent contacts, said ins... | 11/19/2002 |
| 5939692 | Gas-filled interrupter with compressible thermal expansion chamber A compressed gas interrupter comprises two contact assemblies each including at least one wear contact and one of which is mobile along an axis relative to the other, which is fixed. The mobile contact assembly is moved along the axis by an insulative man... | 08/17/1999 |
| 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 |
| 5902980 | Insulating component for high-voltage equipment An insulating component for use in high-voltage switching equipment, especially gas-insulated switching gear. A nozzle made of an insulating material is used in a power switch. Portions of the surface of the nozzle subject to high dielectric stresses in u... | 05/11/1999 |
| 5739495 | Puffer-type circuit breaker and nozzle emitting gas with coaxial abutting plastic tube A compressed-gas circuit breaker is provided with two contacts arranged coaxially opposite one another, at least one of which can be driven to move in the axial direction. The two contacts define in the interrupted state a contact gap. The circuit breaker... | 04/14/1998 |
| 5705781 | Electrical gas-blast switch In a gas-blast switch with a compression device to produce a quenching gas blast, in order to make the magnetic effect of the break current available already at the beginning of the cut-off movement, a compression chamber and a piston-cylinder system form... | 01/06/1998 |
| 5578806 | Compressed gas-blast circuit breaker The compressed gas-blast circuit breaker includes two moving contact members (1, 2) which are guided to move counter to one another along an axis (3) in a chamber which is filled with insulating gas. These contact members each have an arcing contact (8, 9... | 11/26/1996 |
| 5563389 | High-voltage power switch High-voltage power switch with an arc contact and a spatially separated rated current contact, with the movable part of the rated current contact taking the form of an external hollow cylinder for delimiting a storage space for a pressurized quenching gas... | 10/08/1996 |
| 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 |
| 5478980 | Compact low force dead tank circuit breaker interrupter A dead tank high voltage SF6 circuit breaker has a stationary cylinder SF6 puffer section, an arc generated SF6 pressure blast section, a moving arcing contact plug, and a moving open position shield. The contacts are oper... | 12/26/1995 |
| 5453591 | Sensing structure for component wear in high voltage circuit interrupters A vaporizable material, for example, a silicone, that is buried beneath the surface of a Teflon nozzle for a sulfur hexafluoride power circuit breaker in an area of the nozzle which is exposed to abrasion and wear due to arc products. In a similar manner,... | 09/26/1995 |
| 5304762 | Gas-blast circuit breaker The gas-blast circuit breaker has passages in the pump piston which connect the pump space to the arcing space surrounding the quenching tube and to the surrounding space located within the circuit breaker housing. These passages are held closed during sw... | 04/19/1994 |
| 5258589 | High- and medium-voltage circuit breaker with lower operating energy A circuit breaker includes an insulating casing, a stationary main contact, a stationary arcing contact. A moving main contact and a moving arcing contact constituted by a tube define a blast cylinder co-operating with a first fixed piston. A second pisto... | 11/02/1993 |
| 5248862 | Gas-blast circuit breaker In a gas-blast circuit breaker, compressed gas is directed through a movable contact maker into a blow-out space, the latter being delimited by a cylinder and a piston which is operatively associated with the movable contact maker. The piston comprises in... | 09/28/1993 |
| 5229561 | Puffer-type gas circuit breaker A puffer type gas circuit breaker includes arc extinguishing gas filled in the interior of the gas circuit breaker, fixed contact, a movable contact disposed in an opposed relationship with respect to the fixed contact so as to come into contact therewith... | 07/20/1993 |
| 5216214 | High- and medium-voltage gas blast circuit breaker A gas blast circuit breaker comprises a cylindrical metal or insulative enclosure filled with pressurized insulative gas, a fixed arc contact and a mobile assembly coupled to an operating member comprising a gas blast cylinder associated with a gas blast ... | 06/01/1993 |
| 5179257 | Medium-voltage gas circuit-breaker A medium-voltage circuit-breaker comprises a sealed enclosure filled with a dielectric gas and containing a semi-fixed first contact electrically connected to a first terminal and a mobile second contact electrically connected to a second terminal and mec... | 01/12/1993 |
| 5162627 | Medium or high tension circuit breaker having abutting arcing contacts A high tension or medium tension circuit breaker having abutting arcing contacts. The circuit breaker includes a gastight insulating case filled with a gas having good dielectric properties. The case contains a stationary arcing contact; a moving arcing c... | 11/10/1992 |
| 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 |
| 5155313 | Medium tension circuit-breaker A medium tension circuit-breaker has a gastight insulating case filled with a gas having good dielectric properties. A semi-moving arcing contact is electrically connected to a first terminal and a moving contact is mechanically connected to a drive mecha... | 10/13/1992 |
| 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 |
| 5151566 | Gas circuit breaker A gas circuit breaker having a main fixed element and a main movable element capable of contacting and moving apart from each other, a fixed contact provided on the main fixed element side, a movable contact provided on the main movable element side and c... | 09/29/1992 |
| 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 |
| 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 |
| 5079391 | Puffer type gas circuit breaker, contact cover and insulated nozzle of the breaker A puffer type gas circuit breaker having at least one pair of a stationary contact and a movable contact capable of being separated from each other, a pressure producing section including a puffer cylinder and a puffer piston. The puffer cylinder is conne... | 01/07/1992 |
| 5072083 | Grounded gas blast circuit breaker/isolating switch with visual inspection assembly A circuit breaker/isolating switch device intended, in particular, to be associated with a generator in a power station for protection purposes. The device is disposed inside a metal sheath and comprises a gastight insulating casing filled with a gas havi... | 12/10/1991 |
| 5045651 | Switch A switch provided with a negative pressure chamber which is actuated in association with the separating operation of a movable contact. The negative pressure chamber is connected to a means for supplying a fluid to the negative pressure chamber so as to s... | 09/03/1991 |
| 4945197 | High tension circuit breaker including a dielectric gas used for blasting The present invention provides a circuit breaker in which the blast cylinder is delimited by a first cylinder (5) constituting the moving arcing contact, a second cylinder (7) constituting the fixed main contact, and a first piston (14) sliding between sa... | 07/31/1990 |
| 4945198 | High tension circuit breaker with low operating energy A high tension circuit breaker containing a dielectric gas under pressure, the circuit breaker being of the type comprising at least one interrupting chamber comprising an insulating envelope filled with said gas and containing a fixed assembly including ... | 07/31/1990 |
| 4939322 | Puffer type circuit breaker The present invention relates to a puffer type circuit breaker having a high voltage and large capacity, which is provided with an insulating nozzle for blowing a arc-extinguishing gas of high pressure generated by separating a movable contactor from a fi... | 07/03/1990 |
| 4841108 | Recloser plenum puffer interrupter An interrupter (10) having an outer housing (62) adapted to contain an arc-extinguishing fluid, a fixed tubular electrical current carrying member (40) disposed at one end; a movable tubular current carrying member (30) disposed in an end-to-end relations... | 06/20/1989 |
| 4829150 | Gas-blask load-break switch In a gas-blast load-break switch, a nozzle is formed to have a cylindrical trunk part (21b) and a bottom part (21b); the cylindrical trunk part has a predetermined inner diameter large enough to withstand a recovery voltage generated between the fixed arc... | 05/09/1989 |
| 4754109 | Compressed dielectric gas high-tension circuit breaker A compressed dielectric gas high-tension circuit breaker comprising: a fixed assembly comprising main contacts and arcing contacts; a moving assembly comprising main contacts and arcing contacts; a blast chamber comprising a piston which moves on separati... | 06/28/1988 |
| 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 |
| 4577074 | High voltage gas-blast circuit breaker The gas-blast type high voltage circuit breaker includes a first volume (27) in which gas pressure is increased due to heating by the breaking arc, the gas in this volume escaping to blow out the arc at current zero of the current being interrupted, and a... | 03/18/1986 |
