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Patent
Tokyo University of Science, Itoh Kikoh Co., Nippon Thermostat Co. and Swcc Showa Cable Systems Co. | Date: 2014-02-05

Provided is a heat storage device which can stably store heat by storing heat within a fixed temperature range. A heat storage device (10) of the present invention is characterized in being provided with a heat resistant frame (11), which is filled with one kind of alloy or mixed salt having a predetermined eutectic temperature, alternatively, a heat resistant frame (11), which is filled with two or more kinds of alloys or mixed salts having different eutectic temperatures, by having the alloys or the mixed salts adjacent to each other in the order of eutectic temperature levels with a partitioning wall (11a) therebetween. The heat storage device is also characterized in that the heat resistant frame (11) filled with the one kind of alloy or mixed salt having the predetermined eutectic temperature is set as a heat absorption-side heat storing section (12) and a heat dissipation-side heat storing section (13), alternatively, in the case where there are two or more kinds of alloys or mixed salts, the heat resistant frame (11) filled with an alloy (1) or a mixed salt (1) having a highest eutectic temperature is set as the heat absorption-side heat storing section (12), and that a heat resistant frame (11), which is filled with an alloy (2) or a mixed salt (2) having a lowest eutectic temperature is set as the heat dissipation-side heat storing section (13).


Patent
Tokyo University of Science, SWCC Showa Cable Systems Co., Nippon Thermostat Co. and Itoh Kikoh Co. | Date: 2012-03-30

Provided is a heat storage device which can stably store heat by storing heat within a fixed temperature range. A heat storage device (10) of the present invention is characterized in being provided with a heat resistant frame (11), which is filled with one kind of alloy or mixed salt having a predetermined eutectic temperature, alternatively, a heat resistant frame (11), which is filled with two or more kinds of alloys or mixed salts having different eutectic temperatures, by having the alloys or the mixed salts adjacent to each other in the order of eutectic temperature levels with a partitioning wall (11a) therebetween.


Patent
Japan International Superconductivity Technology Center, Fujikura Ltd, Swcc Showa Cable Systems Co. and Furukawa Electric Group | Date: 2016-04-13

An oxide superconductor includes: a substrate made of a metal; an insulating intermediate layer provided on the substrate; an oxide superconducting layer provided on the intermediate layer; a metal stabilizing layer provided on the oxide superconducting layer; and a plurality of dividing grooves which divide the metal stabilizing layer and the oxide superconducting layer along a longitudinal direction of the substrate, reach the inside of the intermediate layer through the oxide superconducting layer from the metal stabilizing layer, and do not reach the substrate. The metal stabilizing layer and the oxide superconducting layer are divided to form a plurality of filament conductors by the plurality of dividing grooves, and in each dividing groove of the plurality of dividing grooves, a width of a groove opening portion of the dividing groove is equal to or greater than a width of a groove bottom portion of the dividing groove.


Patent
Japan International Superconductivity Technology Center, Fujikura Ltd, Swcc Showa Cable Systems Co. and Furukawa Electric Group | Date: 2014-05-28

An oxide superconductor includes: a substrate made of a metal; an insulating intermediate layer provided on the substrate; an oxide superconducting layer provided on the intermediate layer; a metal stabilizing layer provided on the oxide superconducting layer; and a plurality of dividing grooves which divide the metal stabilizing layer and the oxide superconducting layer along a longitudinal direction of the substrate, reach the inside of the intermediate layer through the oxide superconducting layer from the metal stabilizing layer, and do not reach the substrate. The metal stabilizing layer and the oxide superconducting layer are divided to form a plurality of filament conductors by the plurality of dividing grooves, and in each dividing groove of the plurality of dividing grooves, a width of a groove opening portion of the dividing groove is equal to or greater than a width of a groove bottom portion of the dividing groove.


Patent
Kawasaki Heavy Industries and Swcc Showa Cable Systems Co. | Date: 2013-11-20

A railcar includes: a power collector configured to collect electric power through overhead contact lines; a circuit breaking unit connected to the power collector and arranged on a roof of a car; and a plurality of electric power cables connected to the circuit breaking unit. The circuit breaking unit includes: a circuit breaker arranged above the roof and connected to a circuit connected to the power collector; and a branch joint which is integrally connected to a terminal portion of the circuit breaker and arranged under the circuit breaker and to which the plurality of electric power cables are connected.


Patent
Kawasaki Heavy Industries and Swcc Showa Cable Systems Co. | Date: 2013-11-20

A high voltage device system (100) of a railcar according to the present invention is a high voltage device system mounted on a railcar (10) and includes a plurality of high voltage devices (30, 40) to which high-voltage electric power from an overhead contact line is supplied, a plurality of high-voltage cables (70) configured to connect the high voltage devices (30, 40) with each other, and a joint device (51) to which the high-voltage cables (70) are connected. The high-voltage cables (70) respectively include cable connector portions (72) at tip end portions thereof, and each of the cable connector portions (72) includes a base tubular portion (78) configured to cover the high-voltage cable (70) and a fit tubular portion (77) extending from the base tubular portion (78) in a direction substantially perpendicular to a longitudinal direction of the high-voltage cable (70). The joint device (51) includes joint connector portions (55), each of which is fitted to the fit tubular portion (77) of the cable connector portion (72) to be connected to the high-voltage cable (70).


Patent
Swcc Showa Cable Systems Co. | Date: 2011-02-16

The improvement of the strength of the flange part (bushing flange part) of the bushing, the increase of the creepage distance of the insulating tube, and the compactification of the cable sealing end are attempted. The cable sealing end of this invention is provided with the bushing (2) which is attached to the opining part (11) of the equipment case (1) which houses the power equipment in the air tight, the cable termination (3) which is attached to the receiving port (25) of the bushing (2), and the pressure unit (5) which presses the stress-relief cone (4) which is attached to the cable termination (3) toward the bushing (2) side. The flange part (bushing flange part) (22) which projects toward the outer direction of the diameter direction is provided at the rear-end part side of the bushing (2), and the annular projection part (26) is provide concentrically to the flange part (22) at the rear-end surface side of the flange part (22), and the angular pressure metal fitting flange part (52) which composes the pressure unit (5) is arranged concentrically to the bushing (2) through the space (G) at the inner circumference side of the projection part (26).


Patent
Swcc Showa Cable Systems Co. | Date: 2011-04-18

A cable for high-voltage electronic devices including an inner semiconductive layer, a high-voltage insulator, an outer semiconductive layer, a shielding layer, and a sheath which are provided on an outer periphery of a cable core part in the order mentioned, wherein the high-voltage insulator is made of an insulating composition whose temperature dependence parameter D_(R )found by the following expression is 1.0 or less: D_(R)=log R_(23 C.)log R_(90 C. )(where R_(23 C. )is volume resistivity (cm) at 23 C. and R_(90 C. )is volume resistivity (cm) at 90 C.). The cable for high-voltage electronic devices is small in diameter and has an excellent withstand voltage characteristic.


Patent
Swcc Showa Cable Systems Co. | Date: 2013-04-24

There is provided a cable for high-voltage electronic devices that is small in diameter and has an excellent withstand voltage characteristic. It is a cable for high-voltage electronic devices including an inner semiconductive layer 14, a high-voltage insulator 15, an outer semiconductive layer 16, a shielding layer 17, and a sheath 18 which are provided on an outer periphery of a cable core part 11 in the order mentioned, wherein the high-voltage insulator 15 is made of an insulating composition whose temperature dependence parameter D_(R) found by the following expression is 1.0 or less: D_(R) = log R_(23C) - log R_(90C) (where R_(23C) is volume resistivity (cm) at 23 C and R_(90C) is volume resistivity (cm) at 90C).


Patent
Japan International Superconductivity Technology Center and Swcc Showa Cable Systems Co. | Date: 2014-02-27

Provided is an oxide superconductor composition that makes it possible to increase film thickness, increase production speed, and decrease costs when producing a REBaCuO-type oxide superconductor wire (wherein RE is at least one element selected from the group consisting of Y, Nd, Sm, Gd, Dy, Eu, Er, Yb, Pr, and Ho). The oxide superconductor comprises, as essential components thereof, an RE salt of a carboxylic acid that serves as an RE component, that does not contain a ketone group, and that has 3-8 carbon atoms, barium trifluoroacetate that serves as a Ba component, one or more copper salts that serve as a Cu component and that are selected from the group consisting of copper salts of branched saturated aliphatic carboxylic acids having 6-16 carbon atoms and copper salts of alicyclic carboxylic acids having 6-16 carbon atoms, and an organic solvent that dissolves the aforementioned metal salt components.

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