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| Number | Title | Issue Date |
| 7262362 | High voltage device with a particle trap The high-voltage switching device used in one installation position and has metallic encapsulation (10) a switching gap (4) and a particle trap (1) for holding foreign body particles (2), and is characterized in that in the one installati... | 08/28/2007 |
| 7223928 | Switch with improved protection from ice conditions An arrangement is provided to protect an electrical switch from the deleterious effects of ice formation that inhibits switch operation. In a preferred arrangement, an ice shield is provided that protects the current-carrying contact structures and other operative e... | 05/29/2007 |
| 7027957 | Current interrupter assembly A method for determining the influence of one of a plurality of cathodic protection circuits along a pipeline includes switching one of a plurality of cathodic protection circuits off, while the remainder of the plurality of cathodic protection circuits are left on,... | 04/11/2006 |
| 6965088 | Interrupting apparatus having operations counter and methods of forming and using same A portable circuit interrupting apparatus for use on a circuit isolating device and associated methods of formation and use are provided. The portable circuit interrupting apparatus includes a main housing body and a sleeve coaxially mounted therein. The sleeve is s... | 11/15/2005 |
| 6603087 | Switch-disconnector control unit A switch-disconnector control unit comprising an electromagnet as an actuator including a moving control arm, and a spring actuator including a control shaft. The control arm is controlled by an armature of the actuator and connected to the control shaft.... | 08/05/2003 |
| 6573469 | Gas-insulated switchgear device A gas-insulated switchgear device. A casing is provided with a first connection terminal and a second connection terminal, an interruption unit, and a disconnection unit. The disconnection unit includes a first fixed contact connected to the second connec... | 06/03/2003 |
| 6541717 | Locking assembly for a switch assembly A hookstick operated switch assembly includes a switch mounted to a support and movable between open and closed positions. An operating lever is connected to the switch for opening and closing the switch. A locking arm is positioned proximal the switch. A... | 04/01/2003 |
| 6529009 | Vacuum switch including vacuum-measurement devices, switchgear using the vacuum switch, and operation method thereof A vacuum switch is composed by installing a vacuum circuit-breaker and a disconnector in different grounded vacuum vessels, respectively, and a vacuum-measurement device is attached to each grounded vacuum vessel. The above vacuum vessel communicates with... | 03/04/2003 |
| 6518531 | Gas-insulated switchgear A gas-insulated switchgear having three gas-insulated hermetic vessels containing a disconnector for disconnecting a circuit and shunt conductors connected in parallel to each other between the disconnectors of the three hermetic vessels. The shunt conduc... | 02/11/2003 |
| 6426627 | Vacuum switch including vacuum-measurement devices, switchgear using the vacuum switch, and operation method thereof A vacuum switch is composed by installing a vacuum circuit-breaker and a disconnector in different grounded vacuum vessels, respectively, and a vacuum-measurement device is attached to each grounded vacuum vessel. The above vacuum vessel communicates with... | 07/30/2002 |
| 6350958 | Manually operated actuating device and method An actuating device (60) operated by a hookstick (4) is attached to a manually operated fused cutout switch (2) or a oil circuit recloser switch (14). The device (60) comprises a cantilever (62) with a pair of opposing hook-shaped receptacles (70, 72) for... | 02/26/2002 |
| 6180902 | Fault interrupter and operating mechanism therefor A fault interrupter is provided that includes a high-speed disconnect in series with an interrupter wherein the circuit opening is via the interrupter and the circuit making is via the disconnect. A stored energy disconnect operating mechanism operates th... | 01/30/2001 |
| 6130391 | Method of manually operating an actuating device An actuating device operated by a hookstick is attached to an existing ring on a manually operated fused cutout switch or oil circuit recloser switch. The device comprises a cantilever and a clamp for attaching the cantilever about the existing ring. The ... | 10/10/2000 |
| 6093901 | Manually operated actuating device An actuating device operated by a hookstick is attached to a manually operated oil circuit recloser switch. The device comprises a cantilever and an affixed switch lever. The cantilever includes a pair of lever arms, each having a hook-shaped receptacle f... | 07/25/2000 |
| 5998748 | Manually operated actuating device An actuating device operated by a hookstick is attached to an existing ring on a manually operated fused cutout switch or oil circuit recloser switch. The device comprises a cantilever and a clamp for attaching the cantilever about the existing ring. The ... | 12/07/1999 |
| 5861595 | Circuit interrupting apparatus and method for high current power lines A portable circuit interrupting apparatus for use in association with a circuit isolating device such as a fuse cutout, disconnecting switch, or power fuse. The apparatus comprises a tubular housing, with a sleeve coaxially and slidably mounted within the... | 01/19/1999 |
| 5834725 | Circuit interrupter arrangement A vacuum recloser in which an isolator switch is incorporated in series with the vacuum interrupter and is driven by the same actuator. The isolator must only be operated when the vacuum switch is open and no arc current remains. This is ensured in one of... | 11/10/1998 |
| 5717182 | High amperage disconnect switch A pair of fixed contacts is associated with a pair of movable contacts. All of the contacts have circular contact faces. A U-shaped stainless steel arc shield is provided adjacent each set of movable and fixed contacts. The semi-circular bight portion of ... | 02/10/1998 |
| 5650602 | Circuit interrupting apparatus and method for high current power lines A portable circuit interrupting apparatus for use in association with a circuit isolating device such as a fuse cutout, disconnecting switch, or power fuse. The apparatus has a tubular housing, with a sleeve coaxially and slidably mounted within the housi... | 07/22/1997 |
| 5525769 | Inverter cut-out switch An inverter contact switch has a first pair of spaced fixed contacts connected to respective terminals of an inverter circuit for selectively disconnecting and connecting the inverter to a DC power bus. A first pair of spaced movable contacts are position... | 06/11/1996 |
| 5493090 | Two-step operating mechanism for combined interrupter disconnect switch An operating mechanism for a combined interrupter and disconnect switch comprises an operating crank and an interrupter support housing which are separately rotatable about a common pivotal axis. The interrupter switch is part of a disconnect switch arm a... | 02/20/1996 |
| 5483030 | Group operated circuit disconnect apparatus for overhead electric power lines A group operated switching apparatus for overhead electric power lines has a box-like elongated housing which mounts on a pole and supports three disconnect switches. Three operating shafts are journalled on the housing and are operatively connected to th... | 01/09/1996 |
| 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 |
| 4937406 | Insulator-type gas circuit interrupter An insulator-type gas circuit interrupter which comprises a movable contact and a stationary contact for closing and separating a main circuit and an insulator tube in which an arc-extinguishing chamber of a frustoconical configuration is defined. The mov... | 06/26/1990 |
| 4539449 | Disconnect switch A disconnect switch has a fixed tubular contact and a tubular contact movable into connection with the fixed contact. A movable auxiliary contact within the movable tubular contact can travel into connection with a stationary auxiliary contact on the fixe... | 09/03/1985 |
| 4539448 | Disconnect switch for metal-clad, pressurized-gas insulated, high-voltage switchgear installation A disconnect switch is provided for a metal-clad, pressurized-gas insulated, high-voltage switchgear installation. The disconnect switch includes: first and second contact assemblies which have a common longitudinal axis and are switchable between an open... | 09/03/1985 |
| 4521654 | High voltage disconnect switch employing pre-contact pieces A high voltage disconnect switch, including a countercontact piece having switch countercontacts and being arranged for connection to a source of high voltage. Resilient pre-contact pieces are insulatingly connected to the countercontact piece and include... | 06/04/1985 |
| 4514606 | Disconnect switch assembly A disconnect switch is disclosed having a puffer interrupter electrically connected with and operated by a knife switch or fused disconnect switch. A puffer interrupter includes a divided pressure chamber having at least one exterior wall which is flexibl... | 04/30/1985 |
| 4500762 | Resistor-type disconnecting switch for circuit breaker A disconnecting switch including a hollow cylindrical shield of an electrically conducting material including a circular opening, a spring loaded arcing contact member, a main stationary contact member disposed within the shield to be slightly spaced from... | 02/19/1985 |
| 4445014 | High-voltage disconnect switch A disconnect switch for high-voltage installations is disclosed. The switch includes a pair of hollow contacts, one of which is movable, disposed in a grounded metallic housing filled with compressed gas. A spring-loaded contact-breaking pin is provided i... | 04/24/1984 |
| 4414449 | Quick open and close disconnect switch A quick open and close disconnect switch suitable for use in EHV and UHV systems is disclosed. In addition to a conventional main moving contact and a conventional mechanism for operating it, a preferably much smaller, lighter auxiliary moving contact is ... | 11/08/1983 |
| 4296288 | Gas insulated disconnecting switches In a gas insulated disconnecting switch, a movable contact assembly comprises a stationary cylinder, a coaxial cylindrical movable conductive contact, and a coaxial rod-shaped movable arc electrode. A compression chamber is formed between the stationary c... | 10/20/1981 |
| 4283610 | Operator for a circuit interrupter and disconnect switch combination A manual operator for a series-connected circuit interrupter and disconnect combination mounted within a switch gearing closure, which includes an external operating handle affixed to a common operating shaft for the interrupter and the disconnect, which ... | 08/11/1981 |
| 4251700 | Disconnect switch A disconnect switch includes a crossbar assembly having an arm at each of its ends which rotatably fastens the assembly to a frame for swinging motion around a pivot axis. Three movable contact assemblies are carried by the crossbar between a closed posit... | 02/17/1981 |
| 4126773 | Polyphase disconnecting switch arrangement Disclosed is a family of polyphase outdoor interrupter switch arrangements suitable for service in power systems rated up to 34.5 kv with but a single interrupting switch unit per phase. Two insulators are mounted on a base member with one insulator suppo... | 11/21/1978 |
| 4110579 | Improved energy-storage operating mechanisms for circuit-interrupting structures utilizing serially-related disconnecting switch structures therewith An improved operating mechanism of the energy-storage type is provided for circuit-interrupting structures, including an energy-storing means having the energy content therein increased by the movement of a movable member during the closing operation, and... | 08/29/1978 |
| 4049936 | Quick-acting movable operating-column tripping device A quick-acting movable-column tripping device is provided as an optional feature of either circuit-interrupters, supported by upstanding insulating column structures, or, alternatively, in connection with circuit-interrupters having a serially-related dis... | 09/20/1977 |
| 4031346 | Electrical interrupter switch An electrical disconnect switch and circuit interrupter has an interrupter with an elongate tubular housing assembly that mounts on a fixed contact structure of the switch and has an internal fixed interrupter contact electrically connected to said fixed ... | 06/21/1977 |
| 4013852 | Expulsion interruption device for high voltage switches A completely self-enclosed, weatherproof expulsion interruption device is disclosed which includes a detachable, arc-suppressing tube assembly which can be readily replaced in the field as needed, in conjunction with novel spring-loaded expulsion actuatio... | 03/22/1977 |
