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| Number | Title | Issue Date |
| 7250584 | Contact element comprising rounded slot edges The aim of the invention is to prevent local spikes from being created in a contact element of a contact arrangement used for interrupting a current in a distribution network, said contact element comprising a contact support (8) that encompasses a hollow cyl... | 07/31/2007 |
| 7041929 | Contact arrangement for a vacuum switch tube The invention relates to a contact arrangement for a vacuum switch tube for low-voltage power switches. The aim of the invention is to reduce the contact force required to control short circuit currents. To this end, a twin-contact contact arrangement is used wherei... | 05/09/2006 |
| 6965089 | Axial magnetic field vacuum fault interrupter An improved vacuum interrupter is disclosed. The vacuum interrupter includes a ring-shaped structure placed between a contact support structure and an electrical contact associated with the contact support structure. A resistivity of the ring-shaped structure is hig... | 11/15/2005 |
| 6870118 | Contact for vacuum interrupter, and vacuum interrupter using same A contact for a vacuum interrupter, includes: 1) a contact plate; and 2) a contact carrier. The contact carrier includes: a first end face which is fitted with the contact plate, and a peripheral face which is formed with a slit portion in such a manner as to form a... | 03/22/2005 |
| 6765168 | Electrode of vacuum circuit breaker, and method of producing electrode of vacuum circuit breaker An electrode of a vacuum circuit breaker has a cup member and a contact. The cup member has an opening and a periphery which is formed with a slit so as to form a coil section. An electric current flows in the coil section so as to generate a longitudinal magnetic f... | 07/20/2004 |
| 6740838 | Contact for vacuum interrupter and vacuum interrupter using the contact A contact and a vacuum interrupter using the contact. The contact includes a hollow cylindrical contact carrier and a contact plate disposed on one of the axial end faces of the contact carrier. First slits and second slits extend from the one of the axial end faces... | 05/25/2004 |
| 6686552 | Contact for vacuum interrupter, and vacuum interrupter using same A contact for a vacuum interrupter, includes: 1) a contact plate; and 2) a contact carrier. The contact carrier includes: a first end face which is fitted with the contact plate, and a peripheral face which is formed with a slit portion in such a manner a... | 02/03/2004 |
| 6649855 | Contact arrangement for vacuum interrupter and vacuum interrupter using the contact arrangement In a contact arrangement and a vacuum interrupter using the contact arrangement, the contact arrangement includes: a hollow cylindrical contact carrier on one end surface of which a contact plate is attached; a plurality of first slits formed on the conta... | 11/18/2003 |
| 6639169 | Contact for vacuum interrupter and vacuum interrupter using the contact A contact and a vacuum interrupter using the contact. The contact includes a hollow cylindrical contact carrier and a contact plate disposed on one of the axial end faces of the contact carrier. First slits and second slits extend from the one of the axia... | 10/28/2003 |
| 6541726 | Vacuum cartridge in particular for an electrical protection apparatus such as a switch or a circuit breaker A vacuum cartridge, in particular for an electrical protection apparatus such as a switch or circuit breaker, comprising an enclosure of appreciably cylindrical shape closed by two end-plates, two contacts extending axially inside the enclosure, at least ... | 04/01/2003 |
| 6506992 | Vacuum interrupter for vacuum breaker A vacuum interrupter for a vacuum breaker, by which melting on contact surface caused by are concentration when a large current is broken and the arc can be rapidly extinguished by forming a strong magnetic field in vertical direction same as the arc when... | 01/14/2003 |
| 6479779 | Vacuum switching device A vacuum switching device comprising an evacuated envelope including an insulating cylinder, a stationary contact electrode and a movable contact electrode housed within the envelope. The electrodes are adapted to be engaged or disengaged to close or open... | 11/12/2002 |
| 6426475 | Vacuum valve The flux density Bct is applied at the center area of the electrode. The flux density Bct is adjusted within the range A of 0.75 to 0.9 times greater than the axial flux density Bcr which gives the lowest arc voltage between the electrodes against each br... | 07/30/2002 |
| 6163002 | Vacuum circuit interrupter with contact structure including support pins The present invention relates to an interrupter for a circuit breaker for a transmission or distribution line which can distribute and weaken an arc resulting from separation of contacts, can reduce loss of the contacts by the arc, and can improve interru... | 12/19/2000 |
| 6140599 | Contact configuration for vacuum switches A contact configuration for vacuum switches includes two mutually opposite switch parts having a predetermined radius RK. Each switch part has slots which proceed from a center and which extend outward to form a spiral contact. The contours of ... | 10/31/2000 |
| 6072141 | Vacuum switch contact arrangement A vacuum circuit-breaker contact arrangement includes a pair of contacts each being relatively axially movable from a position of engagement to a position of disengagement to establish a circuit interrupting arc therebetween, at least one of said contacts... | 06/06/2000 |
| 5952636 | Vacuum type switch gear device having L shaped stationary and movable conductors arrangement In a vacuum type switch gear device an L shaped stationary and movable conductors arrangement, a transitive portion from one spiral arc groove to a neighboring another spiral arc groove on the surface of a movable electrode defined by the terminating end ... | 09/14/1999 |
| 5852266 | Vacuum circuit breaker as well as vacuum valve and electric contact used in same According to the present invention there are provided a highly reliable electrode of high strength which undergoes little change even with the lapse of time, and a method for making the same, as well as a vacuum valve using such electrode and a vacuum cir... | 12/22/1998 |
| 5804788 | Cylindrical coil and contact support for vacuum interrupter A vacuum interrupter includes a pair of separable electrode assemblies within a vacuum envelope, each electrode assembly including a contact confronting the contact of the other electrode assembly and an electrode coil assembly located behind the contact ... | 09/08/1998 |
| 5763848 | Electrode for vacuum circuit breaker An electrode for a vacuum circuit breaker provided with a connecting portion made of a material having the same resistivity as the arc running face portions across the corresponding arc guiding channel at the outer circumferential end thereof, wherein whe... | 06/09/1998 |
| 5691522 | Vacuum interrupter with a single internal assembly for generating an axial magnetic field An axial magnetic field vacuum interrupter includes a field producing structure associated with only one of two opposing electrode assemblies. The field producing structure is characterized in that when the instantaneous peak arc current is Im,... | 11/25/1997 |
| 5612523 | Vacuum circuit-breaker and electrode assembly therefor and a manufacturing method thereof A portion of a highly conductive metal member is infiltrated in voids of a porous high melting point metal member, and both the metal members are integrally joined to each other. An arc electrode portion 13 is formed of a high melting point area 11 in whi... | 03/18/1997 |
| 5293506 | Vacuum switch tube including windmill electrodes A vacuum switch tube has a pair of windmill type electrodes and a pair of electrode bars located within the tube. Each windmill type electrode includes an auxiliary electrode that includes a central hub portion having an axis, and a plurality of arcuate a... | 03/08/1994 |
| 5099093 | Vacuum switching chamber A vacuum switch which includes two identical facing switch contacts equipped with a cup shaped coil body that is provided with annular contact elements covering the open end of the cup shaped coil body. In order to form turn conductors, the coil body is p... | 03/24/1992 |
| 4999463 | Arc stalling eliminating device and system An arc stalling eliminating electrode having a sealed vacuum cylinder within which are a pair of confronting electrodes disposed within the cylinder and mounted for movement between a first closed position in which the electrodes have contact faces which ... | 03/12/1991 |
| 4982059 | Axial magnetic field interrupter A cylindrical coil conductor incorporated in a vacuum interrupter comprises a cylindrical body with a plurality of inclined slits therein defining a plurality of current paths. The coil conductor is uniformly cylindrical to reduce radial magnetic fields, ... | 01/01/1991 |
| 4839481 | Vacuum interrupter A cylindrical coil electrode (10) incorporated in a vacuum interrupter comprises a cylindrical body (12) having an opening at one end thereof, three electrical connectors (16) provided between the edge surface (15) of the opening of the cylindrical body a... | 06/13/1989 |
| 4713644 | Vacuum fuse A vacuum fuse (10) including a pair of arcing electrodes in the form of parallel, confronting, spaced apart disks (13, 14) supported on the inner ends of aligned contact rods (11, 12). The confronting surfaces of the electrodes define an arc gap (18) and ... | 12/15/1987 |
| 4704506 | Vacuum interrupter A cylindrical coil electrode incorporated in a vacuum interrupter comprises a cylindrical body having an opening at one end thereof, two electrical connections provided between the edge surface of the opening of the cylindrical body and a main electrode, ... | 11/03/1987 |
| 4695689 | Vacuum circuit breaker A pair of separable disc shaped electrodes for a vacuum circuit breaker, each including an annular contact part formed around the outer circumferential portion of the electrode on the facing surface to the other electrode, a round recessed part formed on ... | 09/22/1987 |
| 4629839 | High current switch contacts A contact head (9) for a vacuum interrupter switch is cup-shaped and has a plurality of slots (6) formed therein, each slot passing through the wall-part (5) of the contact head in a generally helical direction and extending partly through the base portio... | 12/16/1986 |
| 4620074 | Contact arrangement for vacuum switches A contact arrangement comprising two cup-type contacts having hollow-cylindrical contact carriers arranged coaxially with each other and having slots inclined in the same sense to the longitudinal axis of the contact arrangement. The slots act as a coil f... | 10/28/1986 |
| 4577075 | Earthing switch for gas-insulated switchgear apparatus An earthing switch for gas-insulated switchgear apparatus is disclosed, in which conductor within an enclosure is provided with a stationary contact, and a moving contact is movably provided to connect with and disconnect from the stationary contact by an... | 03/18/1986 |
| 4567338 | Cup-shaped switch contact member for an electric vacuum switch Cup-shaped switch contact member for an electric vacuum switch having a lead post, a bottom connected to the lead post, a cylinder wall connected to the bottom, and a contact ring secured to the cylinder wall and formed of a material favoring interruption... | 01/28/1986 |
| 4553002 | Axial magnetic field vacuum-type circuit interrupter An axial magnetic field vacuum-type circuit interrupter. Provided in an evacuated housing is a pair of opposed contacts at least one of which is movable with respect to the other and is movable between a closed position in engagement with the other contac... | 11/12/1985 |
| 4553003 | Cup type vacuum interrupter contact The present invention is directed to a cup type vacuum interrupter contact comprised of a holder portion and a contact portion. The holder portion is cup shaped and has a base and side walls extending vertically from the base. The contact portion is circu... | 11/12/1985 |
| 4546222 | Vacuum switch and method of manufacturing the same Disclosed is a vacuum switch having a container and a pair of contact electrodes, and a method of manufacturing the same, in which at least one of the contact electrodes is constituted by a member made up of a skeleton containing cobalt as its principal c... | 10/08/1985 |
| 4532391 | Contact arrangement for vacuum switches Contacts arranged coaxially with respect to each other are provided with slots inclined in the same direction and with a contact disc as well as with a support body of poorly conducting material which is connected to the contact disc in a positively locki... | 07/30/1985 |
| 4486634 | Ground test switch for gas insulated switchgear A ground test switch comprises a terminal plate electrically connected to a movable contact member but electrically insulated from a closed vessel enclosing a high-voltage conductor, a grounding conductor disconnectably electrically connecting the termina... | 12/04/1984 |
| 4473731 | Vacuum circuit interrupter The disclosed electrode assembly used with vacuum circuit interrupters has a disc-shaped electrode including four coil sections defined by four short radial slots extending radially inward at equal angular intervals from its periphery, four circumferentia... | 09/25/1984 |
