Patents by Inventor Shoichi Honjo

Shoichi Honjo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7439448
    Abstract: A phase split structure of a superconducting cable includes three cable cores each having a shield layer provided around a superconductor, a splitter box housing the three cable cores extending from an assembly portion where the three cable cores are assembled into the cable, in a state in which the cable cores are spaced apart from each other, and an electrically-conductive connecting portion connecting respective shield layers of the cable cores to each other within the splitter box. In this way, occurrence of a large magnetic field outside the cable cores can effectively be reduced.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: October 21, 2008
    Assignees: Sumitomo Electric Industries, Ltd., The Tokyo Electric Power Company Incorporated
    Inventors: Takato Masuda, Hiroyasu Yumura, Yoshihisa Takahashi, Kimiyoshi Matsuo, Shoichi Honjo, Tomoo Mimura
  • Patent number: 7296419
    Abstract: To provide a cooling method of a superconducting cable line wherein moistures contained in the cable in the superconducting cable line after laid is removed before cooling, so that solidification of the moistures can be prevented from clogging of piping including a coolant flow channel and a return pipe. There is provided an inert gas generating vessel so that before the coolant is flown into the superconducting cable line 15, the inert gas is blown into the cable line from an inflow pipe 23 connected with a supply pipe 19? and is discharged from a discharge pipe 22 together with the gas. The inert gas is preheated by a heater 3 before feeding it into the cable line. The discharge pipe 22 connected with a discharge side B of the return pipe 19 is provided with a moisture measuring instrument 20 to measure a moisture content of the discharged gas.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: November 20, 2007
    Assignees: Sumitomo Electric Industries, Ltd., The Tokyo Electric Power Company Incorporated
    Inventors: Chizuru Suzawa, Takato Masuda, Kengo Ohkura, Yoshihisa Takahashi, Shoichi Honjo, Masato Shimodate, Yoshibumi Sato, Toshiyuki Uchiyama
  • Patent number: 7279639
    Abstract: A superconducting cable joint structure is a structure used to joint together superconducting cables used at cryogenic temperature or to joint together a terminal of the superconducting cable and a normal conducting cable, and it includes a joint insulation layer arranged radially outer than a portion connecting the superconducting cables' respective conductors together or the superconducting cable's conductor and the normal conducting cable's conductor together, and at least one coolant path provided at the joint insulation layer to cool the portion connecting the conductors together. The cable cores can have their connection prevented from generating heat to have an increased temperature.
    Type: Grant
    Filed: July 20, 2006
    Date of Patent: October 9, 2007
    Assignees: Sumitomo Electric Industries, Ltd., The Tokyo Electric Power Company, Incorporated
    Inventors: Yuuichi Ashibe, Yoshihisa Takahashi, Shoichi Honjo, Keisuke Etoh
  • Patent number: 7265297
    Abstract: A multiphase superconducting cable connection structure includes a connection box accommodating three conductor connects connecting a superconductor of a cable core of each phase extracted from a pair of 3-phase superconducting cables, a solid insulation member fixed to an outer circumference of each conductor connect, and a metal flange fixing the solid insulation member to the connection box. By fixing the metal flange to the connection box (a refrigerant vessel), the conductor connect can be positioned and the conductor connector's movement caused as the cable core thermally contracts can be reduced. The structure can help to position the conductor connect in the connection box and reliably hold it at a prescribed position.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: September 4, 2007
    Assignees: Sumitomo Electric Industries, Ltd., The Tokyo Electric Power Company, Incorporated
    Inventors: Yuuichi Ashibe, Takato Masuda, Yoshihisa Takahashi, Kimiyoshi Matsuo, Shoichi Honjo, Tomoo Mimura
  • Patent number: 7211723
    Abstract: A phase separation jig (100) for a superconducting cable includes: a cable holder (10) maintaining each core (80) of a multi-core superconducting cable (2) in a predetermined tolerable bending manner; and a coupler (20, 30) holding the cable holder (10) for each core (80) at a predetermined spacing with each other. Each core (80) is spaced apart from each other and maintained in a tolerable bending manner by the holder (10). Accordingly, a phase separation structure can be obtained which can regulate deformation of the cable and prevent abnormal deformation even for a superconducting cable.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: May 1, 2007
    Assignees: Sumitomo Electric Industries, Ltd., The Tokyo Electric Power Company Incorporated
    Inventors: Masayuki Hirose, Hiroyasu Yumura, Takeshi Kato, Yoshihisa Takahashi, Kimiyoshi Matsuo, Shoichi Honjo, Tomoo Mimura
  • Patent number: 7168744
    Abstract: A first flange and a second flange are superposed and fastened with a bolt and a nut in a fastening operation, to implement a fastening structure used at temperature lower than atmospheric temperature for the fastening operation. Assuming that the first flange has a thickness L1 and a coefficient of linear expansion ?1, the second flange has a thickness L2 and a coefficient of linear expansion ?2, superposed first flange and second flange have a thickness L, and the bolt has a coefficient of linear expansion ?, a relation of L·??L1·?1+L2·?2 is satisfied, i.e. heat shrinkage of the bolt is not smaller than the total heat shrinkage of the first and second flanges. Thus, impairment of sealing property due to heat shrinkage is avoided at a flange junction used at low temperature.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: January 30, 2007
    Assignees: Sumitomo Electric Industries, Tokyo Electric Power Company
    Inventors: Yuuichi Ashibe, Takato Masuda, Yoshihisa Takahashi, Shoichi Honjo, Masato Shimodate, Keisuke Etoh
  • Patent number: 7166804
    Abstract: The present invention provides a terminal structure of a superconducting cable including a cable core having a superconducting shield layer and an electrical insulation layer. The superconducting shield layer has a radially outer portion provided with by a connection electrode and the superconducting shield layer and the connection electrode are connected together with a low melting solder. The connection electrode has a ground wire connected thereto to ground the superconducting shield layer. For a multiphase cable including a plurality of cable cores, connection electrodes are linked by a conductive coupling member to short circuit superconducting shield layers. The superconducting shield layer can be grounded without impaired insulating property of the electrical insulation layer.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: January 23, 2007
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hiroyasu Yumura, Yoshihisa Takahashi, Kimiyoshi Matsuo, Shoichi Honjo, Tomoo Mimura
  • Patent number: 7148423
    Abstract: A phase split structure of a superconducting cable includes three cable cores each having a shield layer provided around a superconductor, a splitter box housing the three cable cores extending from an assembly portion where the three cable cores are assembled into the cable, in a state in which the cable cores are spaced apart from each other, and a shield connecting portion connecting respective shield layers of the cable cores to each other within the splitter box. The shield connecting portion allows the cable cores to have their respective shield layers connected together with low resistance and each shield layer can pass a current substantially equal in magnitude to that which each superconductor passes. Thus in each shield layer a magnetic field can be formed having a level that can cancel a magnetic field generated from each superconductor. The structure can thus effectively prevent a large magnetic field external to the cable core.
    Type: Grant
    Filed: June 8, 2004
    Date of Patent: December 12, 2006
    Assignees: Sumitomo Electric Industries, Ltd, The Tokyo Electric Power Company Incorporated
    Inventors: Takato Masuda, Hiroyasu Yumura, Yoshihisa Takahashi, Shoichi Honjo, Keisuke Etoh
  • Publication number: 20060254804
    Abstract: A superconducting cable joint structure is a structure used to joint together superconducting cables used at cryogenic temperature or to joint together a terminal of the superconducting cable and a normal conducting cable, and it includes a joint insulation layer arranged radially outer than a portion connecting the superconducting cables' respective conductors together or the superconducting cable's conductor and the normal conducting cable's conductor together, and at least one coolant path provided at the joint insulation layer to cool the portion connecting the conductors together. The cable cores can have their connection prevented from generating heat to have an increased temperature.
    Type: Application
    Filed: July 20, 2006
    Publication date: November 16, 2006
    Inventors: Yuuichi Ashibe, Yoshihisa Takahashi, Shoichi Honjo, Keisuke Etoh
  • Patent number: 7094973
    Abstract: A superconducting cable joint structure is a structure used to joint together superconducting cables used at cryogenic temperature or to joint together a terminal of the superconducting cable and a normal conducting cable, and it includes a joint insulation layer arranged radially outer than a portion connecting the superconducting cables' respective conductors together or the superconducting cable's conductor and the normal conducting cable's conductor together, and at least one coolant path provided at the joint insulation layer to cool the portion connecting the conductors together. The cable cores can have their connection prevented from generating heat to have an increased temperature.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: August 22, 2006
    Assignees: Sumitomo Electric Industries, Ltd., The Tokyo Electric Power Company, Incorporated
    Inventors: Yuuichi Ashibe, Yoshihisa Takahashi, Shoichi Honjo, Keisuke Etoh
  • Patent number: 7093619
    Abstract: To provide a thermal insulation piping with no radially projecting part from a periphery thereof, so as to facilitate insertion of the thermal insulation piping into a pipeline or equivalent. In a thermal insulation tube 10 having a vacuum layer between an inner tube 11 and an outer tube 12, an evacuation port 30 for vacuum evacuation is oriented parallel with a longitudinal direction of the thermal insulation piping at an end of the thermal insulation tube 10. This construction can produce the thermal insulation tube 10 with no radially projecting part from a periphery thereof, thus providing improved workability when the thermal insulation piping is contained in the pipeline or equivalent. Further, a flexible pipe(s) 40 is/are preferably connected to the evacuation port(s) 30. This can allow increased positional tolerances in the connection of the evacuation port(s) to a vacuum evacuation device.
    Type: Grant
    Filed: March 24, 2003
    Date of Patent: August 22, 2006
    Assignees: Sumitomo Electric Industries, Ltd., The Tokyo Electric Power Company Incorporated
    Inventors: Michihiko Watanabe, Yoshihisa Takahashi, Kimiyoshi Matsuo, Shoichi Honjo, Tomoo Mimura, Terumitsu Aiba
  • Patent number: 7067739
    Abstract: A joint structure of a superconducting cable having improved connection strength and preventing break of a superconducting layer is provided. A central conductor of an insulating spacer and a superconducting cable are connected via a conductor connecting member having a sleeve-shaped end. Specifically, the central conductor of the insulating spacer and the conductor connecting member are connected by multi-contact connection.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: June 27, 2006
    Assignees: Sumitomo Electric Industries, Ltd., The Tokyo Electric Power Company, Incorporated
    Inventors: Yuuichi Ashibe, Takato Masuda, Yoshihisa Takahashi, Kimiyoshi Matsuo, Shoichi Honjo, Tomoo Mimura
  • Patent number: 7030314
    Abstract: A termination structure of a cryogenic cable has a cryogenic-cable end portion and a current-lead end portion that are coupled to each other with a flexible conductor. Accordingly, any displacement in three-dimensional directions of the end portions that could occur due to thermal expansion and thermal contraction of the cryogenic cable and the current lead can be absorbed, and a sufficient current capacity can be ensured.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: April 18, 2006
    Assignees: Sumitomo Electric Industries, Ltd., The Tokyo Electric Power Company, Incorporated
    Inventors: Yuuichi Ashibe, Yoshihisa Takahashi, Kimiyoshi Matsuo, Shoichi Honjo, Tomoo Mimura
  • Patent number: 7002116
    Abstract: A baking method for heating an object (an inner pipe, an outer pipe) having a vacuum layer formed therein to remove gas molecules occluded in the object, wherein the object itself is made to be a heat production element for heating. By making the baking object a heat production element, the object can be heated directly and the heating can be energy-efficient. Moreover, additional heating means such as a heater or gas is unnecessary, which enables simplification of a configuration of a baking device. Therefore, a baking method is obtained which enables energy-efficient heating and, in particular, uniform heating of a long or large object.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: February 21, 2006
    Assignees: Sumitomo Electric Industries, Ltd., The Tokyo Electric Power Company, Incorporated
    Inventors: Michihiko Watanabe, Yoshihisa Takahashi, Terumitsu Aiba, Kimiyoshi Matsuo, Shoichi Honjo, Tomoo Mimura
  • Publication number: 20050217878
    Abstract: A multiphase superconducting cable connection structure includes a connection box accommodating three conductor connects connecting a superconductor of a cable core of each phase extracted from a pair of 3-phase superconducting cables, a solid insulation member fixed to an outer circumference of each conductor connect, and a metal flange fixing the solid insulation member to the connection box. By fixing the metal flange to the connection box (a refrigerant vessel), the conductor connect can be positioned and the conductor connector's movement caused as the cable core thermally contracts can be reduced. The structure can help to position the conductor connect in the connection box and reliably hold it at a prescribed position.
    Type: Application
    Filed: December 17, 2004
    Publication date: October 6, 2005
    Inventors: Yuuichi Ashibe, Takato Masuda, Yoshihisa Takahashi, Kimiyoshi Matsuo, Shoichi Honjo, Tomoo Mimura
  • Patent number: 6888060
    Abstract: A terminal structure of cryogenic equipment for leading a terminal of cryogenic equipment 100 from a very low temperature portion to a room temperature portion through a bushing, having a feature in that a connecting/heat-insulating portion 300 adiabatically connected with the aforementioned very low temperature portion 200 and the aforementioned room temperature portion 400 is provided along the outer circumference of the aforementioned bushing 30 between the aforementioned very low temperature portion 200 and the aforementioned room temperature portion 400.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: May 3, 2005
    Assignees: Sumitomo Electric Industries, Ltd., The Tokyo Electric Power Company, Incorporated
    Inventors: Yuuichi Ashibe, Masayuki Hirose, Kouhei Furukawa, Yoshihisa Takahashi, Kimiyoshi Matsuo, Shoichi Honjo, Tomoo Mimura, Terumitsu Aiba
  • Publication number: 20050067174
    Abstract: To provide a cooling method of a superconducting cable line wherein moistures contained in the cable in the superconducting cable line after laid is removed before cooling, so that solidification of the moistures can be prevented from clogging of piping including a coolant flow channel and a return pipe. There is provided an inert gas generating vessel so that before the coolant is flown into the superconducting cable line 15, the inert gas is blown into the cable line from an inflow pipe 23 connected with a supply pipe 19? and is discharged from a discharge pipe 22 together with the gas. The inert gas is preheated by a heater 3 before feeding it into the cable line. The discharge pipe 22 connected with a discharge side B of the return pipe 19 is provided with a moisture measuring instrument 20 to measure a moisture content of the discharged gas.
    Type: Application
    Filed: March 31, 2003
    Publication date: March 31, 2005
    Inventors: Chizuru Suzawa, Takato Masuda, Kengo Ohkura, Yoshihisa Takahashi, Shoichi Honjo, Masato Shimodate, Yoshibumi Sato, Toshiyuki Uchiyama
  • Publication number: 20050061537
    Abstract: The present invention provides a terminal structure of a superconducting cable including a cable core having a superconducting shield layer and an electrical insulation layer. The superconducting shield layer has a radially outer portion provided with by a connection electrode and the superconducting shield layer and the connection electrode are connected together with a low melting solder. The connection electrode has a ground wire connected thereto to ground the superconducting shield layer. For a multiphase cable including a plurality of cable cores, connection electrodes are linked by a conductive coupling member to short circuit superconducting shield layers. The superconducting shield layer can be grounded without impaired insulating property of the electrical insulation layer.
    Type: Application
    Filed: September 23, 2004
    Publication date: March 24, 2005
    Inventors: Hiroyasu Yumura, Yoshihisa Takahashi, Kimiyoshi Matsuo, Shoichi Honjo, Tomoo Mimura
  • Publication number: 20050011574
    Abstract: To provide a thermal insulation piping with no radially projecting part from a periphery thereof, so as to facilitate insertion of the thermal insulation piping into a pipeline or equivalent. In a thermal insulation tube 10 having a vacuum layer between an inner tube 11 and an outer tube 12, an evacuation port 30 for vacuum evacuation is oriented parallel with a longitudinal direction of the thermal insulation piping at an end of the thermal insulation tube 10. This construction can produce the thermal insulation tube 10 with no radially projecting part from a periphery thereof, thus providing improved workability when the thermal insulation piping is contained in the pipeline or equivalent. Further, a flexible pipe(s) 40 is/are preferably connected to the evacuation pont(s) 30. This can allow increased positional tolerances in the connection of the evacuation port(s) to a vacuum evacuation device.
    Type: Application
    Filed: March 24, 2003
    Publication date: January 20, 2005
    Inventors: Michihiko Watanabe, Yoshihisa Takahashi, Kimiyoshi Matsuo, Shoichi Honjo, Tomoo Mimura, Terumitsu Aiba
  • Publication number: 20040256142
    Abstract: A phase split structure of a superconducting cable includes three cable cores each having a shield layer provided around a superconductor, a splitter box housing the three cable cores extending from an assembly portion where the three cable cores are assembled into the cable, in a state in which the cable cores are spaced apart from each other, and an electrically-conductive connecting portion connecting respective shield layers of the cable cores to each other within the splitter box. In this way, occurrence of a large magnetic field outside the cable cores can effectively be reduced.
    Type: Application
    Filed: May 7, 2004
    Publication date: December 23, 2004
    Applicants: Sumitomo Electric Industries, Ltd., The Tokyo Electric Power Company, Incorporated
    Inventors: Takato Masuda, Hiroyasu Yumura, Yoshihisa Takahashi, Kimiyoshi Matsuo, Shoichi Honjo, Tomoo Mimura