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| Number | Title | Issue Date |
| 8115132 | Heavy-duty circuit breaker with a housing A heavy-duty circuit breaker has a housing with a longitudinal housing axis and a contact arrangement disposed in the housing. The contact arrangement is conductively connected to a first electrical lead fed through the housing and a second electrical lead fed throu... | 02/14/2012 |
| 7763821 | Puffer-type gas blast circuit breaker A puffer-type gas blast circuit breaker is capable of restraining reduction in creepage insulation resistance of an insulating support and an insulating rod due to insulating gas of high temperature. An electrode section is mounted on a stationary member supported o... | 07/27/2010 |
| 7595461 | Heavy-duty circuit breaker with erosion-resistant short-circuit current routing The heavy-duty circuit-breaker having an axis (A), and having an arcing contact piece, a current-carrying element and an erosion protection element, with the arcing contact piece having an opening in order to carry an essentially axial flow of a gas which has been h... | 09/29/2009 |
| 7402771 | Circuit breaker An exemplary circuit breaker has in an enclosure filled with an insulating gas at least one interrupting chamber extending along a longitudinal axis. The interrupting chamber can be configured radially symmetrically and contains an arcing volume and at least two ass... | 07/22/2008 |
| 7367363 | Sanitary conduit support systems Apparatus for supporting conduits within a sanitary environment. Some supports are configured so as to avoid the formation of surfaces that might collect dust, debris, cleaning fluids, etc. when installed. In one embodiment, the support includes a pair of opposing s... | 05/06/2008 |
| 7339132 | Method of current interruption using puffer type gas circuit breaker with combined-action of cylinder and piston A puffer type gas circuit breaker has a piston, which is connected with a center shaft via a link mechanism. At an initial stage of an interruption operation, the link mechanism drives a puffer cylinder and the piston both in an interruption direction while maintain... | 03/04/2008 |
| 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 |
| 7041928 | Interrupter unit for a high-voltage power switch An interrupter unit (1) for a high-voltage power switch supported by a supporting element (5,6) radially surrounding the interrupter element (1) and consisting of two sections (5a, 5b, 6a, 6b | 05/09/2006 |
| 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 |
| 6787725 | Switching mechanism of circuit breaker for gas insulted switchgear A switching mechanism of a circuit breaker for a gas insulated switchgear is able to extinguish arc gas by changing a volume of a compressing chamber without increasing a stroke of a movable cylinder and without increasing required output power of an actuator. ... | 09/07/2004 |
| 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 |
| 6660954 | Gas-blast circuit-breaker The gas-blasted circuit-breaker includes a movable arc contact, a fixed arc contact opposing the movable arc contact, an insulating nozzle, a puffer cylinder, a hollow conductor, an insulating rod connected to the puffer cylinder, and a fixed piston fitte... | 12/09/2003 |
| 6624371 | Circuit-breaker including a channel for emptying the piston-driven compression chamber A circuit-breaker includes two contacts which are disposed in an interrupting space filled with a dielectric gas under pressure and between which an electric arc strikes during circuit-breaker opening, a thermal blast chamber communicating directly with t... | 09/23/2003 |
| 6515248 | Gas circuit breaker In order to provide a gas circuit breaker capable of reducing a remarkable degradation of dielectric strength in the vessel caused by hot gas and which can be downsized, the present invention is characterized by a hot gas discharge mechanism of the movabl... | 02/04/2003 |
| 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 |
| 6252190 | Electrical high speed circuit breaker with explosive charges including ablative arc extinguishing material A simple high-speed circuit breaker which is cheap to produce is specified for alternating currents which have to be switched off, which switches such currents off within one half-cycle at the current zero crossing, by means of a gas-generating explosive ... | 06/26/2001 |
| 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 |
| 6078485 | Medium- and high-voltage gas-insulated circuit breaker with arc quenching means A medium- and high-voltage gas-insulated circuit breaker with arc quenching capability, comprising an electrical contact which is provided with a fixed element and with a movable element which can be mutually coupled and which form, upon separation, an ar... | 06/20/2000 |
| 6013889 | Method for retaining a movable contact in a circuit interrupter A method for retaining a movable contact in a circuit interrupter is applicable to interrupters including first and second contacts, at least one of the contacts being movable. A movable element supporting the movable contact is displaceable between a con... | 01/11/2000 |
| 5978200 | High-voltage circuit breaker with arc gas-blast The high-voltage circuit breaker with gas insulation is equipped with a device for gas-blast and blowout of the arc generated between the stationary arcing contact and the movable arcing contact when the current is interrupted. Downstream from the blowout... | 11/02/1999 |
| 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 |
| 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 |
| 5742017 | Circuit-breaker provided with a closure resistance having an insertion assembly A circuit-breaker including a moving assembly having a moving main contact (14) electrically connected to a first terminal (2A), a fixed assembly having a fixed arcing contact electrically connected to a resistance (5) which is connected to a second termi... | 04/21/1998 |
| 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 |
| 5610381 | Compression gas puffer type circuit breaker A compression gas puffer type circuit breaker has a magnetic body surrounding a conductor between a stationary arc contact and a main bus conductor. The magnetic body is protected from being exposed to heated puffer gas generated when a movable arc contac... | 03/11/1997 |
| 5600111 | Circuit-breaker having low self-compression A circuit-breaker including two arcing contacts that co-operate with each other, at least one of which is part of a moving contact assembly that is secured to a drive member and that is constituted by a first tube carrying the moving arcing contact at its... | 02/04/1997 |
| 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 |
| 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 |
| 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 |
| 5510591 | High tension circuit breaker capable of interrupting fault currents having a delayed zero crossing The invention relates to a high tension circuit breaker capable of interrupting alternating fault currents which have a pseudo period T. The faults occur at an instant t0 and delay the zero crossing of the current after a maximum time lapse of ... | 04/23/1996 |
| 5495084 | Slip-through mounting structure for circuit interrupter The movable contact of a puffer interrupter contains a movable conductive tubular sleeve which is electrically connected to and is slidably mounted within a hollow conductive adapter which is supported from the end of a bushing insulator. An insulation ro... | 02/27/1996 |
| 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 |
| 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 |
| 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 |
| 5072084 | Gas circuit breaker A gas circuit breaker includes a pair of separable contact portions, a nozzle of an electrically insulating material surrounding the contact portions to guide a flow of gas, and a buffer chamber for compressing the gas upon a separating operation of the c... | 12/10/1991 |
| 5023415 | Switch apparatus A switch apparatus for use in a distribution system, having a case, a pair of bushings arranged on the case so as to oppose each other, and a breaker arranged in the case such that breaking and closing actions take place in a direction perpendicular to an... | 06/11/1991 |
| 5001314 | High tension circuit-breaker having a dielectric gas under pressure A high tension circuit breaker having a dielectric gas under pressure, the circuit breaker being of the type including at least one interrupting chamber comprising an insulating shell filled with the gas and containing a fixed assembly including a fixed m... | 03/19/1991 |
| 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 |
