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"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| 8111503 | Gas-insulated switchgear A gas-insulated switchgear allowing reduction in layout dimension in a direction of axis lines of circuit breakers and also reduction in layout dimension in a direction orthogonal to the direction of the axis lines of the circuit breakers, thereby allowing reduction... | 02/07/2012 |
| 7952855 | Subsea switchgear apparatus A subsea switchgear apparatus including a frame, at least one electrical power inlet mounted to the frame, at least one electrical power outlet mounted to the frame, a distribution chamber mounted to the frame, and at least one canister mounted to the frame. The at ... | 05/31/2011 |
| 7417846 | Gas-insulated switchgear For simple structure and easy manufacture, module tanks have a common standardized size so that the same tank is applicable even when the components to be accommodated are changed. The basic structure of the module is arranged so that all of the interrupter, the dis... | 08/26/2008 |
| 7417847 | Compact current transformer casing for gas-insulated switchgear assemblies The invention pertains to a current transformer (1′) for enclosed, gas-insulated high-voltage switchgear (10). According to the invention, a current transformer (1′) is characterized in that a removable installation flange (12, 12′)... | 08/26/2008 |
| 7193172 | Gas-insulated switchgear tank In a gas-insulated switchgear tank in which an electric insulating characteristic is improved by a gas, and which has a vacuum circuit-breaker, a disconnecting switch, and a container in which container the vacuum circuit-breaker and the disconnecting switch are arr... | 03/20/2007 |
| 7188400 | Method for mounting units for an avionic display An improved device and method for mounting an avionic system is shown. The design provides varying locations of key components, which allows a single mounting system to be used with several varieties and configurations of aircraft within the crowded confines of an i... | 03/13/2007 |
| 7158369 | Single phase or polyphase switchgear in an enveloping housing Single phase or polyphase switchgear having one or more switches which are mounted with the aid of solid insulation such that they are insulated, as well as associated live components such as rail systems, connectors and the like. Both the switches and the associate... | 01/02/2007 |
| 7130172 | Switchgear and receiving transformation apparatus using the same A switchgear having a primary circuit breaker and a secondary circuit breaker respectively arranged on the primary side and secondary side of a load switch or a voltage and current transformer for an instrument, a primary grounding switch arranged between the load s... | 10/31/2006 |
| 6865072 | Metal-enclosed switchgear A tank filled with an insulating gas accommodates insulator tubes incorporating vacuum-valve breakers for individual phases. One end of each insulator tube is fixed to the inside of the tank. Each vacuum-valve breaker is installed generally on a common longitudinal ... | 03/08/2005 |
| 6831828 | Gas-insulated switchgear A compact and economical gas-insulated switchgear is provided. The gas-insulated switchgear includes: a grounding metal housing 1 filled with insulating gas, and in which the disconnector part 2 having a moving side electrode part 2a and ... | 12/14/2004 |
| 6646861 | Gas insulated switchgear In a gas-insulated switching device capable of reducing the physical installation space while suppressing the installation height of the device, busbar connecting lines are disposed perpendicularly to and between as pair of main busbars to connect the mai... | 11/11/2003 |
| 6631075 | Switchgear The instrumentation transformers 6a to 6d and 7a to 7f for measuring the voltage of the main circuit are arranged within the container 15b located in the midst of the containers 15a to 15c. In the present invention, the containers 15a and 15b are linked b... | 10/07/2003 |
| 6614648 | Bus line conductor container and gas insulated switchgear device using the same In a gas insulated switchgear device, a phase transposing unit for bus line conductors is provided in a bus line tank without providing a separate bus line extending unit. A bus line container includes a plurality of tanks connected in a straight line sha... | 09/02/2003 |
| 6560091 | Gas insulated switchgear In order to shorten the length of connection buses and reduce a cost, in the present invention, a plurality of T-branched circuit breaker units 12 are arranged in a direction perpendicular to the T-branch direction, and the plurality of circuit breaker un... | 05/06/2003 |
| 6556428 | Gas insulated switchgear A gas insulated switchgear includes a plurality of T-branched circuit breaker units arranged in a direction perpendicular to the T-branch direction, and connected by first connection bus units and second connection bus units in series alternately in a rec... | 04/29/2003 |
| 6538877 | Gas insulation switch To provide a gas insulation switch reducing the SF6 gas use amount without damaging the insulation performance and arc extinguishing performance, the present invention uses SF6 gas as insulating gas to be charged in the grounding tan... | 03/25/2003 |
| 6459569 | Switchgear The instrumentation transformers 6a to 6d and 7a to 7f for measuring the voltage of the main circuit are arranged within the container 15b located in the midst of the containers 15a to 15c. In the present invention, the containers 15a and 15b are linked b... | 10/01/2002 |
| 6459567 | Gas-insulated switchgear A gas-insulated switchgear comprising bushings mounted to and passing through a vessel wall of the hermetic vessel, each having an outer end connected to an insulated bus conductor at the outside of the hermetic vessel and an inner end connected to the el... | 10/01/2002 |
| 6445569 | Gas-insulated switchgear A gas-insulated switchgear provided with a resin mold bushing for supporting and insulating a main circuit conductor from a ground tank is miniaturized. A container portion 3a is formed by opening an end inside of the tank of a resin mold bushing 3 for su... | 09/03/2002 |
| 6399911 | Gas insulated switchgear apparatus A gas insulated switchgear of the present invention, a plurality of disconnect switches are provided on a line connecting a bus line to a circuit-breaker in such a manner as to be arranged in both a main bus unit, a breaker unit or in both a first and sec... | 06/04/2002 |
| 6373687 | Gas insulation switch To provide a gas insulation switch reducing the SF6 gas use amount without damaging the insulation performance and arc extinguishing performance, the present invention uses SF6 gas as insulating gas to be charged in the grounding tan... | 04/16/2002 |
| 6337452 | Gas insulated switchgear with flange-spacer assembly A gas insulated switchgear includes a bus unit, a breaker unit and a line side unit. An insulating spacer structure attaching at least two of the units together includes an inner flange on a first unit, an outer flange on a second unit, and an insulating ... | 01/08/2002 |
| 6292356 | Gas insulation switch A gas insulation switch has a container charged with insulating gas which contains an electric conductor and at least a pair of contactors. The container is divided into a plurality of sections. For the sections which have no switching devices or separabl... | 09/18/2001 |
| 6219225 | Gas insulated switch gear and method for assembling therefor A gas insulated switch gear has a main bus unit, a circuit breaker unit and a line unit. The line unit has a top plate with a hole through which a potential transformer is inserted into the inside of the line unit and an adapter cover fixed to the potenti... | 04/17/2001 |
| 6205018 | Air insulated switchgear with operating device for effect circuit breaker With the intention of simplifying the replacement of an operating device (4) of an air insulated switchgear (1) having a power circuit breaker (3), the operating device has been made dockable. By dockable is meant that the operating device can be readily ... | 03/20/2001 |
| 6188034 | Gas insulated switchgear with flange-spacer assembly A gas insulated switchgear includes a bus unit, a breaker unit and a line side unit. An insulating spacer structure attaching at least two of the units together includes an inner flange on a first unit, an outer flange on a second unit, and an insulating ... | 02/13/2001 |
| 6134100 | Gas-insulated switchgear assembly having mounting elements The encapsulation (1) of a gas-insulated switchgear assembly is supported at both ends (7, 9) on a foundation (11). To this end, mounting device (12) are provided at the first end (7) and are anchored in the foundation (11) such that they cannot move. At ... | 10/17/2000 |
| 6091039 | Gas-insulated line with an incorporated power capacitor and circuit breaker The gas-insulated line comprises a conductor (1A) disposed inside a case (3A) filled with a dielectric gas under pressure. A power capacitor (5) is electrically connected to the conductor while being disposed inside a compartment (3P) secured to the case ... | 07/18/2000 |
| 5991148 | Metal-enclosed gas-insulated switchgear assembly This metal-enclosed, gas-insulated switchgear assembly is provided with at least one multiphase switch panel which is mounted on a foundation surface (8), with in each case at least one power breaker (1, 2, 3) per phase which extends along a longitudinal ... | 11/23/1999 |
| 5796060 | Gas insulated switchgear with grounding and disconnecting switches A switching apparatus includes a grounded, insulating gas-filled housing, the housing having a housing wall, and a power circuit-breaker disposed in the housing. The apparatus further includes a current connection for a first busbar, a current connection ... | 08/18/1998 |
| 5757614 | Gas insulated switchgear apparatus A gas insulated switchgear device of a double bus type which is accommodated in a metal container filled with SF6 gas includes first and second gas insulated main buses disposed horizontally and substantially in parallel with each other. Bus se... | 05/26/1998 |
| 5754382 | Gas insulated switchgear and power transmission system using the switchgear A power transmission system includes a transmission line unit for three phases connected to three gas insulated transmission lines and a standby transmission line unit for a phase connected to a standby gas insulated transmission line connected with each ... | 05/19/1998 |
| 5638254 | Gas insulated switch gear device A gas circuit breaker 40 automatically interrupts a fault current such as ground fault current flowing through a conductor 61 of a bus line 60. A high speed grounding switch 10 performs a higher grounding and its releasing operation than the open and clos... | 06/10/1997 |
| 5625530 | Gas insulated switchgear equipment including a bypass bus and bypass disconnecting switch A power receiving unit is arranged in one side of an instrument potential/current unit transformer. A transformer-side unit is arranged in the other side of the instrument potential/current transformer units. A bypass bus connecting the power receiving un... | 04/29/1997 |
| 5589674 | Metal-encapsulated, gas-insulated switching installation A metal-encapsulated, gas-insulated switching installation is provided with at least one busbar system, the busbar system having an axis separation, and a circuit breaker, the circuit breaker being in the form of a pole and having a pole axis, the circuit... | 12/31/1996 |
| 5578805 | Metal-enclosed gas-filled switchgear units A metal-enclosed, gas-filled switchgear unit has at least two busbar systems and a circuit breaker which respectively has per pole a pole axis and at least one arcing chamber built into a pole housing constructed as a metal enclosure. The pole axes are ar... | 11/26/1996 |
| 5578804 | Metal-enclosed gas-insulated switching installation A metal-enclosed, gas-insulated switching installation includes at least two busbar systems and a circuit breaker. Each circuit breaker is in the form of a pole having a pole axis and at least one extinction chamber, installed in a pole housing. The pole ... | 11/26/1996 |
| 5484972 | High-voltage gas sealed switchgear including series connected switches and closing resistor A high-voltage switching device for gas-insulated switchgear has a gas-filled metal housing, a conducting path in the metal housing and at least two series-connected switching points with movable contact pieces which are actuated by a common drive mounted... | 01/16/1996 |
| 5469050 | High-voltage measurement device A high-voltage measurement device for an electrical high-voltage switchboard plant having an measurement electrode built into an encapsulating housing, as well as an electrical conductor which conducts a measurement signal provided by the measurement elec... | 11/21/1995 |
| 5453910 | Gas insulated switchgear device A gas insulated switchgear device includes a pair of main bus lines arranged in parallel; a pair of auxiliary bus lines arranged in parallel; three sets of circuit breakers each including at both ends thereof respective disconnecting switches, the three s... | 09/26/1995 |
