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| Number | Title | Issue Date |
| 7313964 | Method and apparatus for the detection of high pressure conditions in a vacuum-type electrical device A method for detecting a high pressure condition within a high voltage vacuum device includes detecting the position of a movable structure such as a bellows. The position at high pressures can be detected optically by the interruption of a light beam reflected by a... | 01/01/2008 |
| 7225676 | Method and apparatus for the detection of high pressure conditions in a vacuum switching device A method for detecting a high pressure condition within an interrupter includes measuring the intensity of light emitted from an arc created by contacts within the interrupter, comparing the measured intensity with a predetermined value, and providing an indication ... | 06/05/2007 |
| 6310310 | Encapsulated vacuum interrupter module removably mounted in a housing A high voltage electric switch includes an insulated housing with an opening therethrough and an interior surface. The housing has an upper open end and a lower open end. A conductive upper terminal pad has a downwardly extending bar, wherein the upper te... | 10/30/2001 |
| 5929410 | Terminal structure for vacuum circuit breaker A terminal structure of a vacuum circuit breaker is capable of effectively radiating heat when conducting electricity. The terminal structure includes a flat terminal connected with the switching mechanism; a cylindrical terminal having one end welded to ... | 07/27/1999 |
| 5597992 | Current interchange for vacuum capacitor switch The current interchange includes a housing disposed on a high voltage circuit interrupter. The movable switch contact extends into the housing with a guide member attached to the end of the movable switch contact. The housing includes a base attached to o... | 01/28/1997 |
| 5528009 | Vacuum switch with a current-loop assembly A vacuum switch has a vacuum interrupter which can be actuated by a drive device using a lever arrangement. A two-armed drive lever is mounted in a pivotable fashion on the displaceable connection bolt of the vacuum interrupter and interacts with a stop f... | 06/18/1996 |
| 4937405 | Vacuum switch chamber A vacuum switch chamber includes a ceramic body having two ends, two cylinder halves defining an encompassing parting line between the halves and an internal groove along the parting line. Metal caps close both of the ends. Mutually movable conductor bolt... | 06/26/1990 |
| 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 |
| 4591678 | High power switching apparatus A switching apparatus for disconnecting and connecting power between a power source and a load employs a vacuum switch, a knife blade or air switch coupled electrically in series with the vacuum switch and a positive interlock mechanism. In the disconnect... | 05/27/1986 |
| 4527028 | Modular vacuum interrupter A modular vacuum interrupter for controlling the application of single or polyphase electrical power to single or polyphase electrical apparatus includes a rigid base, a plurality of identical vacuum switch modules, an operating mechanism and cover. The b... | 07/02/1985 |
| 4506244 | High voltage relay A small high-voltage sealed relay with an axially movable armature and moving contact. The moving contact is electrically connected to a fixed wiring terminal by a pair of coil springs arranged within the terminal and slidably engaging opposite side surfa... | 03/19/1985 |
| 4426560 | Reduced pressure electrical switch An electrical switch for efficient, high continuous current carrying operation, with at least one movable contact for effecting current interruption. The ambient pressure within the volume defined by the electrical switch body is maintained at or is reduc... | 01/17/1984 |
| 4420661 | Switching mechanism with a vacuum circuit breaker between a bus bar and a cable connection piece A switching mechanism with a vacuum circuit breaker between a bus bar and a cable connection stud. With this switching mechanism, the conductor parts forming the current path are coaxially arranged in an insulating oil bed surrounded by a tightly sealing ... | 12/13/1983 |
| 4414447 | Low DC voltage, high current switch assembly A low voltage, high continuous current DC switch assembly is provided having integral switch operating means with the switch and a resistance means which is fluid cooled. This switch assembly is particularly adapted to function as a shunt switch assembly ... | 11/08/1983 |
| 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 |
| 4192981 | Structurally improved rod array vacuum interrupter A high current interrupter is enclosed in a sealed enclosure having a pair of axially disposed contacts therein, one stationary and one movable relative thereto. An array of rods or electrodes is mounted near each end of the enclosure, the rods extending ... | 03/11/1980 |
| 4158911 | Method of manufacturing a vacuum-type circuit interrupter The following method is used for manufacturing a vacuum-type circuit interrupter that comprises: (i) an envelope comprising a glass casing and an annular metal disc imbedded in the glass and (ii) a tubular metal shield mounted on the disc. The shield is f... | 06/26/1979 |
| 4021628 | Vacuum fault current limiter A vacuum current limiting circuit interrupter having rapidly separable contacts and magnetic field coils disposed to produce a magnetic field transverse to the arc formed during circuit interruption. The transverse magnetic field creates arc instability a... | 05/03/1977 |
| 4005297 | Vacuum-type circuit interrupters having heat-dissipating devices associated with the contact structures thereof Vacuum "bottles", or vacuum-type circuit interrupters are provided having heat pipes, or reflux condensers provided in the contacts and contact-stems thereof, to remove the generated heat from the interior of the vacuum-interrupter envelope at the contact... | 01/25/1977 |
| 3996438 | Vacuum-type circuit interrupter with two sets of contacts electrically in parallel A vacuum-type circuit interrupter comprises two pluralities of rod electrodes positioned to form a ring of electrodes in which the electrodes of the first plurality interleave with those of the second plurality and are spaced circumferentially of the ring... | 12/07/1976 |
| 3969598 | Vacuum-type circuit interrupter with a plurality of sets of contacts in parallel This vacuum-type circuit interrupter comprises a plurality of pairs of separable contacts located within an evacuated envelope and electrically connected in parallel. The movable contact of each pair is mounted on a long, slender contact rod through which... | 07/13/1976 |
| 3956721 | Fault interrupter A high voltage fault interrupter including a vacuum interrupter having a fixed contact and a movable contact, a trip mechanism module connected to said movable contact, said trip mechanism module monitoring the power line for conditions which call for cir... | 05/11/1976 |
| 3953693 | Vacuum switch with integrated capacitor shield A vacuum switch with integrated capacitor shield comprising an evacuated insulating envelope provided with metallic end cap closures through which relative movable contact rods extend; the evacuated envelope encloses a plurality of shields which also serv... | 04/27/1976 |
