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| Number | Title | Issue Date |
| 6943307 | Switching device The switching device for switching high electrical currents and voltages has at least one switch pole (1, 1′, 1″) which is operated by means of a rotatable shaft (8, 8′, 8″). Furthermore, the switching device has at least one lever system (1... | 09/13/2005 |
| 6313424 | Multipolar switch A multipoint switch, especially for high voltage, having identically configured interrupter units (2, 3, 4), the pivoting contacts (10) of which are connected to a common drive (44) by a linkage mechanism (50, 60, 71) associated with the interrupter unit ... | 11/06/2001 |
| 5844187 | Single piece arcing contact for a circuit breaker A circuit breaker having a movable load contact arm (14'), which pivots between an open position and a closed position, and a stationary line contact arm (16'). The circuit breaker includes an arcing contact structure (210) which is pivotally mounted on t... | 12/01/1998 |
| 5663544 | Switching device having a vacuum circuit-breaker shunt connected with a gas-blast circuit breaker A device for switching electric current includes a compressed gas switch, at least one vacuum switch, and two terminals. A first consumable contact of the compressed gas switch is electrically connected to a first of the two terminals and a movable electr... | 09/02/1997 |
| 5635692 | Contact arrangement for electrical apparatus A contact arrangement is provided for engaging first and second stationary contacts in a predetermined sequential manner, for example so as to appropriately provide a pre-insertion function via the first contact and prior to engagement of the second conta... | 06/03/1997 |
| 5510590 | Multipole switch with common polyphase operating mechanism characterized by staggered connection or disconnection Each interrupter unit (10, 12, 14) of the switch for medium voltage and high voltage has a drive shaft (30), a moving switch contact piece (18) and a transmission linkage (38) which connects the switch contact piece (18) to the drive shaft (30). All the i... | 04/23/1996 |
| 5003206 | Integral solenoid and starter motor Integral solenoid and starter motor having four or more poles for internal combustion engines has an electrically conductive disc carried by the armature or core of the solenoid for movement in response to energization and de-energization of the solenoid ... | 03/26/1991 |
| 4678876 | Isolating switch apparatus for a high-voltage switching system which may be insulated with SF6 gas An isolating switch apparatus, includes an encapsulation having at least one disconnection point and a plurality of contact points corresponding to a given number of phases therein, a plurality of phase conductors at least partially disposed in the encaps... | 07/07/1987 |
| 4584621 | Two or more than two poles switch means having unequal contact gaps and turn off capacities A contact point structure for two pole or more than two pole switches and relays. Each pair of contact points has a different turn-off capacity and a different contact gap so that opening and closing the multi-pole switch will sequentially open or close t... | 04/22/1986 |
| 4510359 | Circuit interrupter having improved closing resistor control means Sporadic malfunctions of the closing resistor mechanism employed in a power circuit breaker to connect a resistor in parallel with the breaker contacts (prior to closing of such contacts) is prevented by providing an improved control and actuating means f... | 04/09/1985 |
| 4495390 | Disconnect switch A switch for making and breaking a connection between a load circuit and a power line includes a stationary metal bar mechanically and conductively connected to the power line and a scissorlike contactor pair gripping the bar in a closure position. The ba... | 01/22/1985 |
| 4484046 | Vacuum load break switch A vacuum load break switch uses a vacuum interrupter for the load break device together with a series connected visible disconnect which is interlocked with the vacuum interrupter mechanism. Further, the visible disconnect is grounded in the fully opened ... | 11/20/1984 |
| 4484044 | Vacuum load switch with a disconnecting switch A load switch includes a vacuum switch in series with an air disconnecting switch. The vacuum switch comprises a fixed electrode, a movable electrode attached to one end of an axially movable control rod and a retaining spring which exerts a resilient for... | 11/20/1984 |
| 4454394 | Circuit breaker having a parallel resistor A circuit breaker for a transmission line includes a plurality of main interrupters and a plurality of parallel resistor interrupters. In order to reduce an overvoltage on the transmission line, the main interrupters are closed at slightly different times... | 06/12/1984 |
| 4390763 | Electrochemical cell shunting switch assembly with matrix array of switch modules An electrical shunting switch assembly for use with a high continuous D.C. current electrochemical cell system, for electrically shunting or by-passing a cell of the system to permit maintenance or replacement, and then permitting stepped or gradual curre... | 06/28/1983 |
| 4159498 | Electric circuit breaker with high current interruption capability Current interruption capability for short-line or terminal faults is achieved by connecting a fluid blast interrupter in series with a high current vacuum interrupter capable of withstanding the initial recovery voltage during such fault. The fluid blast ... | 06/26/1979 |
