Famous Patents
In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8148660 | Gas-insulated high-voltage circuit breaker with a relief duct which is controlled by an overflow valve A high-voltage circuit breaker includes two arcing contacts, which are capable of moving relative to one another along an axis, an insulating nozzle, a heating volume for accommodating quenching gas, a heating channel, and an overpressure valve. The pressure of the ... | 04/03/2012 |
| 7732727 | Heavy-duty circuit-breaker with sealing against hot gas The heavy-duty circuit-breaker with arc blowing has an element which is sensitive to hot gas and/or to gas pressure and is protected by means of a seal against a hot-gas flow. The seal is advantageously a movable non-contacting seal. The seal has a channel entrance ... | 06/08/2010 |
| 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 |
| 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 |
| 7102101 | High voltage circuit breaker with internal tank heater A high voltage circuit breaker with a gas-insulated tank is provided. Enclosed with the tank is an elongated heater having at least one heating element enclosed in an outer tube. The heater is located coaxially within the tank and is surrounded by the insulating gas... | 09/05/2006 |
| 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 |
| 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 |
| 6207917 | Compressed gas power switch A compressed gas-blast is described having a first, actuatable arcing contact, a second, stationary arcing contact, a rated current path running concentrically to the contacts, as well as having a compression device, at least the first, actuatable arcing ... | 03/27/2001 |
| 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 |
| 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 |
| 5902978 | Power breaker This power breaker has at least one quenching chamber, which is filled with an insulating medium, is of cylindrical design, extends along a central axis (2) and has a power current path, having two stationary consumable contact arrangements (5, 6) which a... | 05/11/1999 |
| 5654532 | Moving interrupter gap shield The movable nozzle of a puffer circuit interrupter has a coaxial cylindrical shield connected to its downstream end and the main movable contacts connected to its upstream end. The shield is electrically connected to the stationary contact terminal. The m... | 08/05/1997 |
| 5629506 | Low voltage AC contactor including high recovery voltage gas system An AC contactor having a high recovery voltage strength includes a contact assembly and a high recovery voltage gas system coupled to the contact assembly. The contact assembly includes two contact pads per electrical phase, with one of the contact pads b... | 05/13/1997 |
| 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 |
| 5084600 | Gas-blast load-break switch A gas-blast load-break switch comprises a pressure storage chamber for storing pressure of arc-extinguishing gas with arc energy generated by the disconnection between contacts, and a suction chamber including a piston which is moved in connection with th... | 01/28/1992 |
| 5025118 | Metal-clad, compressed gas-blast circuit-breaker with a shifting linkage A metal-clad, compressed gas-blast circuit-breaker (1) with a gas-filled housing (2) and with an interrupter unit (3), which is supported, insulated in the housing (2), has at least one insulating drive rod (26) coupled to the switching contact (20) to ac... | 06/18/1991 |
| 4965419 | Metal-clad, compressed gas-blast circuit-breaker A metal-clad, compressed gas-blast circuit-breaker having a gas-filled housing and an interrupter unit supported in the housing by a hollow post insulator. The circuit-breaker has a shifting linkage with at least one insulating drive rod, the shifting lin... | 10/23/1990 |
| 4958052 | ARC severing and displacement method and apparatus for fault current interruption Current interrupters for high voltage networks are disclosed which sever the post-zero arc plasma, connecting a pair of arc terminating electrodes, near an upstream wall electrode and displace the severed plasma with a high dielectric strength gas, gainin... | 09/18/1990 |
| 4652709 | Gas blast switch A gas blast switch, preferably for switching medium voltages, has two cylindrical contacts movable relative to one another along the cylinder axis in a casing filled with extinguishing gas. The contacts are coaxially surrounded by a hot space. The hot spa... | 03/24/1987 |
| 4471187 | Gas-blast switch A gas-blast switch or circuit-interrupter contains a fixed set of contacts and a movable set of contacts. Each contact set possesses an arc contact and a rated current contact coaxially surrounding the related arc contact. Operatively associated and co-mo... | 09/11/1984 |
| 4451717 | Circuit interrupter operating mechanism having a chemical operator with stationary combustion chambers An electric circuit interrupter comprising a pair of separable contacts, an operating mechanism for opening and closing the contacts and a drive mechanism including a cylinder-piston assembly and a gas pressure generator having multiple stationary combust... | 05/29/1984 |
| 4431878 | Compression piston switch A compression piston switch is provided with two switching parts which are mutually axially displaceable. The switch also has a device which is connected to a first one of the two switching parts for guiding a quenching gas flow. The quenching gas, which ... | 02/14/1984 |
| 4393291 | Gas blast interrupters A gas-blast type interrupter comprises first and second electrodes relatively movable between a closed position in which they are in mutual electrical engagement and an open position in which they are mutually separated, movement of the electrodes towards... | 07/12/1983 |
| 4386250 | Device for separably assembling two enclosures of a cut-out apparatus containing fluid under pressure A device for separably assembling first and second enclosures of an electric cut-out apparatus, said enclosures being filled with a dielectric fluid under pressure and having a rod for operating the cut-out apparatus passing therethrough with the compress... | 05/31/1983 |
| 4383152 | Circuit breaker A circuit breaker is disclosed in which a compressed quenching medium, heated by an arc, is rapidly removed from a main duct in such a manner that the arc is effectively blown by axially opposing flows of quenching medium. The circuit breaker includes a n... | 05/10/1983 |
| 4375023 | Gas-blast switch A movable, tubular-shaped contact element is displaceably guided in a partition wall subdividing the internal space of the gas-blast switch housing into an extinguishing chamber and an expansion chamber. During the cut-off stroke a current connection prev... | 02/22/1983 |
| 4341933 | Method and apparatus for extinguishing an electric arc in a circuit breaker A method and apparatus for extinguishing an electric arc in a circuit breaker is disclosed which is applicable to circuit breakers in which a gaseous extinguishing medium, such as compressed air or sulfur hexafluoride, is used. The apparatus includes a fl... | 07/27/1982 |
| 4307273 | Gas blast circuit breaker A gas blast circuit breaker comprises one breaking assembly having a supporter and two breaking units at least movable contacts of which are supported on opposite ends of the supporter, and the other breaking assembly having a supporter and a single break... | 12/22/1981 |
| 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 |
| 4270034 | Puffer type circuit interrupter A circuit interrupter comprises a pair of contacts which can be relatively moved to be detouchable in a fluid for arc extinction; a pressure chamber which is connected to an arc space to contain the fluid for arc extinction whose pressure is raised in the... | 05/26/1981 |
| 4259556 | Gas puffer-type circuit interrupter A circuit interrupter comprises a pressure chamber and an arc extinguishing chamber containing an arc extinguishing fluid and a pair of separable contacts. The pressure chamber includes a separation chamber including a guide member or a check valve for su... | 03/31/1981 |
| 4243860 | Circuit interrupter with pressure limiting A circuit breaker provided with an interrupter of the fluid blast type in which a gas in a chamber is increased in pressure by the arc energy in the chamber which holds the high pressure gas until a fluid path is made through openings provided in the cour... | 01/06/1981 |
| 4239949 | Self-extinguishing type circuit interrupter A self-extinguishing circuit interrupter wherein a pair of separable contacts is disposed within an arc extinguishing gas. Energy of an electric arc established between the separated contacts is utilized to increase the pressure of the arc extinguishing g... | 12/16/1980 |
| 4228332 | Gas pressure circuit interrupter A circuit interrupter comprises a pair of contacts in a container filled with a gas for extinction; an insulation nozzle around the contacts to form an arc chamber; a gas chamber which is connected to the arc chamber under departing the contacts. The gas ... | 10/14/1980 |
| 4228333 | Circuit interrupter having controlled rate of arc extinguishment A circuit interrupter comprises a pair of contacts being relatively moved to be detachable in an arc extinct chamber filled with a fluid for arc extinction; a pressurizing chamber for storing the fluid pressurized in an arc space in which the arc is forme... | 10/14/1980 |
| 4223192 | Gas blast circuit breaker A blasting piston ("puffer") circuit breaker having two stationary nozzle-shaped contacts which are bridged in the "on" position by a hollow, cylindrical, movable contact and an annular body of insulating material for reducing the cross-section of the onc... | 09/16/1980 |
| 4218597 | Gas-blast type circuit interrupter A circuit interrupter of the self-extinguishing type in which a high pressure fluid generated by an electric arc established between separable contacts is utilized in the extinction of the arc. The interrupter comprises separable contacts, a pressure-rais... | 08/19/1980 |
| 4213022 | Two-pressure type circuit interrupter A high-compression two-pressure type circuit interrupter characterized by cylinder means separated into two gas-tight compartments by a pressure responsive divider, one compartment containing an arc-extinguishing gas, the other compartment containing an o... | 07/15/1980 |
| 4181837 | Compressed-gas circuit interrupter having insulated contacts A compressed-gas circuit interrupter characterized by at least one pair of separable contacts, each contact being tubular and having a tubular insulating liner on the inner surface thereof, each liner being recessed from the open end of the contact to pro... | 01/01/1980 |
| 4139752 | Gas-type circuit-breaker An improved gas-type circuit-interrupter is provided having a pair of separable contacts, which establish an arc upon separation within a confined casing having a nozzle structure. The arrangement is such that during the initial portion of the opening ope... | 02/13/1979 |
