Patents by Inventor Yutaka Komatsu
Yutaka Komatsu 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).
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Publication number: 20140254695Abstract: A charging station performs communications by use of a superimposing/separating unit configured by connecting a capacitor, a coupling transformer and a capacitor to branch lines branching out respectively from a control cable and a grounded cable. An electric vehicle performs communications by use of a superimposing/separating unit configured by providing a coupling transformer to the control cable. A capacitor is also connected between the control cable and the grounded cable. Communications are allowed by the configuration of a closed loop circuit comprising the control cable, the branch line, the capacitor, a primary coil of the coupling transformer, the capacitor, the branch line, the grounded cable, the capacitor, and a primary coil of the coupling transformer.Type: ApplicationFiled: July 13, 2012Publication date: September 11, 2014Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., TOYOTA JIDOSHA KABUSHIKI KAISHIA, AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.Inventors: Yousuke Takata, Yutaka Komatsu, Takeshi Hagihara, Hiroya Andoh, Yuta Ochiai, Ryuichi Kamaga, Atsushi Iwai, Yukihiro Miyashita, Nobuyuki Nakagawa
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Publication number: 20140254694Abstract: This output circuit sends a control pilot signal which has been generated at a voltage generation source to an input circuit. Between the control pilot line and the ground line of the output side of the output circuit, a communication unit is connected via a transformer. Between the control pilot line and the ground line of the input side of the input circuit, a communication unit is connected via a transformer. Between the output circuit and the transformer, a lowpass filter is interposed. Between the input circuit and the transformer, a lowpass filter is interposed.Type: ApplicationFiled: June 21, 2012Publication date: September 11, 2014Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., TOYOTA JIDOSHA KABUSHIKI KAISHIA, AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.Inventors: Ryou Okada, Takeshi Hagihara, Yutaka Komatsu, Tatsuya Izumi, Kazuhiko Nii, Yousuke Takata, Hiroya Andoh, Yuta Ochiai, Ryuichi Kamaga, Atsushi Iwai, Yukihiro Miyashita, Nobuyuki Nakagawa
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Publication number: 20140247893Abstract: Provided are a communication system and a communication device capable of suppressing attenuation of a communication signal superimposed upon a control pilot line. This output circuit (20) sends a control pilot signal which has been generated at a voltage generation source (21) to an input circuit (60). Between the control pilot line (4) and the ground line (3) of the output side of the output circuit (20), a communication unit (30) is connected via a transformer (31). Between the control pilot line (4) and the ground line (3) of the input side of the input circuit (60), a communication unit (70) is connected via a transformer (71). Between the output circuit (20) and the transformer (31), a lowpass filter (33) is interposed. Between the input circuit (60) and the transformer (71), a lowpass filter (73) is interposed.Type: ApplicationFiled: June 21, 2012Publication date: September 4, 2014Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.Inventors: Yutaka Komatsu, Takeshi Hagihara, Ryou Okada, Yousuke Takata, Tatsuya Izumi, Kazuhiko Nii, Hiroya Andoh, Yuta Ochiai, Ryuichi Kamaga, Atsushi Iwai, Yukihiro Miyashita, Nobuyuki Nakagawa
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Patent number: 8779642Abstract: An electric power distribution member for stator is a member for connecting a plurality of coils to one another, each having coil opposing end portions located on an inner circumferential side and on an outer circumferential side in a radial direction of a stator, and it includes a plurality of conductor pieces and a plurality of insulating holding portions. The conductor piece has a first connection end portion in a flat plate shape connected to an inner circumferential side end portion of a coil and a second connection end portion in a flat plate shape connected to an outer circumferential side end portion of another coil. In addition, the insulating holding portion integrally holds adjacent conductor pieces at a distance from each other at a portion other than the opposing connection end portions of each conductor piece. The insulating holding portions are arranged in a manner discrete from one another.Type: GrantFiled: January 26, 2010Date of Patent: July 15, 2014Assignees: Sumitomo Electric Industries, Ltd., Toyota Jidosha Kabushiki KaishaInventors: Masaki Matsuyama, Yutaka Komatsu, Yasuhiro Endo, Masao Okumura, Takahiro Kayano
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Publication number: 20140192910Abstract: An output circuit sends out, to an input circuit, a control pilot signal generated by a voltage source. A voltage transformer is provided to a control pilot line on the output side of the output circuit, and a communication unit transmits and receives communication signals via the voltage transformer. A voltage transformer is provided to the control pilot line on the input side of the input circuit, and a communication unit transmits and receives the communication signals via the voltage transformer. A low-pass filter is provided to the control pilot line between the input circuit and the voltage transformer.Type: ApplicationFiled: July 13, 2012Publication date: July 10, 2014Applicants: Sumitomo Kitahama 4-chome, TOYOTA JIDOSHA KABUSHIKI KAISHA, AutoNetworks Technologies, Ltd., Sumitomo WiringInventors: Ryou Okada, Takeshi Hagihara, Yutaka Komatsu, Tatsuya Izumi, Kazuhiko Nii, Yousuke Takata, Hiroya Andoh, Yuta Ochiai, Ryuichi Kamaga, Atsushi Iwai, Yukihiro Miyashita, Nobuyuki Nakagawa
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Publication number: 20130342008Abstract: Provided are a power line communication system, a connector device, and a power line communication device that allow downsizing of a device for power line communication in a vehicle that performs power line communication with a feeding device via a charging cable. An electromagnetic induction type signal converter and a filter necessary for power line communication are provided in a connector device 3, and a power line communication section which performs power line communication with the electromagnetic induction type signal converter is provided in an ECU. A capacitor 16, a signal wire 17, and a capacitor 16 are connected in series between AC lines 11 and 12 extending from a tubular part 32 of the connector device 3.Type: ApplicationFiled: February 1, 2012Publication date: December 26, 2013Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHIA, SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yousuke Takata, Takeshi Hagihara, Yutaka Komatsu, Hiroya Andoh, Yuta Ochiai, Nobuyuki Nakagawa, Yukihiro Miyashita
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Publication number: 20130328528Abstract: Provided is a power line communication system in which power line communication devices having different configurations from each other coexist. A charging station performs power line communication, using a signal superimposition/separation section in which a capacitor, a coupling transformer, and a capacitor are connected to branch lines branched from two AC lines. An electric vehicle performs power line communication, using a signal superimposition/separation section in which the coupling transformer is inserted in one AC line and a capacitor is connected to and between two AC lines. In a case where the charging station and the electric vehicle are connected to each other with a charging cable, a closed loop circuit is formed that is composed of the AC line, the branch line, the capacitor, a primary coil of the coupling transformer, the capacitor, the branch line, the AC line, an AC line, the AC line, the capacitor, a primary coil of a coupling transformer, the AC line, and an AC line.Type: ApplicationFiled: February 1, 2012Publication date: December 12, 2013Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHIA, SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yousuke Takata, Yutaka Komatsu, Takeshi Hagihara, Nobuyuki Nakagawa
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Publication number: 20130154362Abstract: A coupling transformer 15 necessary for power line communication is provided in a connector device 3. The coupling transformer 15 is formed by winding an AC line 11 and a signal wire 13 around an annular toroidal core 15a, which is to be fitted on a tubular part 32 of the connector device 3. Cutouts for housing the AC line 11 and the signal wire 13 wound around the toroidal core 15a are formed in the tubular part 32 of the connector device 3. Further, a coil 17a is connected to the AC line 11, a capacitor 17b is connected to an AC line 12, and the coil 17a and the capacitor 17b are connected to each other with a wire 17c provided along the AC lines 11 and 12, whereby a filter circuit is formed.Type: ApplicationFiled: August 24, 2011Publication date: June 20, 2013Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yousuke Takaka, Yutaka Komatsu, Takeshi Hagihara, Hiroya Andoh, Yuta Ochiai, Nobuyuki Nakagawa, Yukihiro Miyashita
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Publication number: 20130090244Abstract: A superconducting coil and a rotating device, the performances of which are improved, and a superconducting coil manufacturing method are provided. A superconducting coil 10 is a saddle-shaped superconducting coil formed by winding a superconducting wire so as to form a race-track-like shape. The superconducting coil includes a curved portion 10b and a straight portion 10a connected to the curved portion 10b. In the curved portion 10b, an upper edge 10c is positioned closer to an inner peripheral side than a lower edge 10d is, and in the straight portion 10a, the upper edge 10c is positioned closer to an outer peripheral side than the lower edge 10d is.Type: ApplicationFiled: June 21, 2010Publication date: April 11, 2013Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Tsuyoshi Shinzato, Hitoshi Oyama, Yutaka Komatsu, Takeshi Baba, Takeshi Ariyoshi
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Patent number: 8386993Abstract: A workflow system includes: a workflow storage that stores workflows built by connecting a plurality of tasks assigned to persons in charge, respectively; a task extracting unit that extracts at least one task from each of two or more of the workflows stored in the workflow storage; a site creation unit that creates a conference site of which an access authority is given to the persons in charge of the tasks extracted by the task extracting unit and in which electronic information is shared; and an access controller that controls access to the conference site created by the site creation unit in accordance with the authority.Type: GrantFiled: March 21, 2008Date of Patent: February 26, 2013Assignee: Fuji Xerox Co., Ltd.Inventor: Yutaka Komatsu
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Publication number: 20120189839Abstract: A method of manufacturing a metal composite material includes applying a mechanical impact force to a carbon material and a metal powder at such an intensity as capable of pulverizing the carbon material, thereby adhering the carbon material to a surface of the metal powder.Type: ApplicationFiled: December 9, 2011Publication date: July 26, 2012Applicants: Nagano Prefecture, Shinko Electric Industries Co., Ltd.Inventors: Syuzo AOKI, Takuya Oda, Takuya Kurosawa, Shoji Koizumi, Hidekazu Takizawa, Yutaka Komatsu, Shinichi Anzawa
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Patent number: 8115353Abstract: A connection line has a first bent portion bent toward a coil's main body in a vicinity of a stator core's axial length limit line. Furthermore, the connection line at a portion closer to the coil's main body than the first bent portion has a second bent portion bent away from the coil's main body. Furthermore, the connection line has a third bent portion bent away from the coil's main body to have a connection portion along an end surface of the terminal member in contact therewith generally parallel thereto.Type: GrantFiled: July 17, 2008Date of Patent: February 14, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroaki Urano, Kazutaka Tatematsu, Yasuji Taketsuna, Yasushi Nishikuma, Yutaka Komatsu
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Patent number: 8097995Abstract: A split stator for an electric motor includes a core having a tooth portion, a coil formed around the tooth portion, insulation spacers arranged between a surface of the tooth portion and an inner periphery of the coil, and holding the inner periphery of the coil with a space kept from the surface of the tooth portion, and a resin filler material having high thermal conductivity and filling the space. The resin filler material is configured to allow heat release from the inner periphery of coil to the core.Type: GrantFiled: April 28, 2008Date of Patent: January 17, 2012Assignees: Sumitomo Electric Industries, Ltd., Toyota Jidosha Kabushiki KaishaInventors: Shinichi Iizuka, Kouzou Kimura, Kazushi Kusawake, Yutaka Komatsu, Kazutaka Tatematsu
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Publication number: 20110278974Abstract: An electric power distribution member for stator is a member for connecting a plurality of coils to one another, each having coil opposing end portions located on an inner circumferential side and on an outer circumferential side in a radial direction of a stator, and it includes a plurality of conductor pieces and a plurality of insulating holding portions. The conductor piece has a first connection end portion in a flat plate shape connected to an inner circumferential side end portion of a coil and a second connection end portion in a flat plate shape connected to an outer circumferential side end portion of another coil. In addition, the insulating holding portion integrally holds adjacent conductor pieces at a distance from each other at a portion other than the opposing connection end portions of each conductor piece. The insulating holding portions are arranged in a manner discrete from one another.Type: ApplicationFiled: January 26, 2010Publication date: November 17, 2011Inventors: Masaki Matsuyama, Yutaka Komatsu, Yasuhiro Endo, Masao Okumura, Takahiro Kayano
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Patent number: 7969273Abstract: An insulating member is provided with a rear surface section, a pair of side surface sections and a pair of column sections. The rear surface section is formed to be arranged between an edgewise coil and the yoke inner circumference surface of a stator core. The pair of side surface sections extend from the rear surface section to cover the side surfaces on the slot side of teeth and are formed flexibly in the facing directions. The pair of column sections extend from the rear surface section along the end surfaces on the coil end side of the teeth, while keeping spaces between the column sections and the side surface sections so as not to disturb deformation of the side surface sections.Type: GrantFiled: June 10, 2008Date of Patent: June 28, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroaki Urano, Atomi Arakawa, Yutaka Komatsu
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Patent number: 7944111Abstract: A stator core is formed by arranging divided cores (20) in a circumference direction in cylindrical shape. On an upper end surface (60) of a core back (50) of the divided core, holes (62, 64) are made. Then, on the upper end surface, a reinforcing ring (40) having through holes (66, 68) is arranged, and is connected with rivets (70, 72). Thus, stress is transmitted not only through a side surface (58) but also through the reinforcing ring (40), between the adjacent divided cores. Thus, strength of the stator using a powder magnetic core is ensured and a space is saved.Type: GrantFiled: June 14, 2007Date of Patent: May 17, 2011Assignees: Toyota Jidosha Kabushiki Kaisha, Sumitomo Electric Industries, Ltd.Inventors: Yasuhiro Endo, Kazutaka Tatematsu, Yutaka Komatsu
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Patent number: 7800260Abstract: A driving gear of a vehicle comprising a motor generator (MG2), a power control unit (21) for controlling the motor generator (MG2), and a case for containing the motor generator (MG2) and the power control unit (21). The power control unit (21) comprises a first inverter for driving the motor generator (MG2), and a voltage converter for applying power supply voltage to the first inverter after stepping it up. The voltage converter includes a reactor (L1). Heat of the reactor (L1) is dissipated using lubricant touching the reactor (L1) and the case as heat transfer agent. A circulation path of lubricant is formed in the case and the reactor is arranged on the circulation path.Type: GrantFiled: October 27, 2006Date of Patent: September 21, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yutaka Komatsu, Yasuhiro Endo, Kazutaka Tatematsu, Takeshi Yamazaki, Hiromichi Kuno, Tadafumi Yoshida
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Publication number: 20100213784Abstract: A split stator for an electric motor includes a core having a tooth portion, a coil formed around the tooth portion, insulation spacers arranged between a surface of the tooth portion and an inner periphery of the coil, and holding the inner periphery of the coil with a space kept from the surface of the tooth portion, and a resin filler material having high thermal conductivity and filling the space. The resin filler material is configured to allow heat release from the inner periphery of coil to the core.Type: ApplicationFiled: April 28, 2008Publication date: August 26, 2010Inventors: Shinichi Iizuka, Kouzou Kimura, Kazushi Kusawake, Yutaka Komatsu, Kazutaka Tatematsu
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Publication number: 20100207467Abstract: A stator includes an annular stator core having a plurality of tooth portions, a plurality of stator coils wound around the plurality of tooth portions, respectively, and a busbar provided radially outward in the stator core relative to the stator coils, for electrically connecting the plurality of stator coils to one another. The busbar is arranged like a windmill on an axial end surface of the stator core.Type: ApplicationFiled: October 15, 2008Publication date: August 19, 2010Inventors: Hiroaki Urano, Masaki Matsuyama, Yutaka Komatsu
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Publication number: 20100201212Abstract: A connection line has a first bent portion bent toward a coil's main body in a vicinity of a stator core's axial length limit line. Furthermore, the connection line at a portion closer to the coil's main body than the first bent portion has a second bent portion bent away from the coil's main body. Furthermore, the connection line has a third bent portion bent away from the coil's main body to have a connection portion along an end surface of the terminal member in contact therewith generally parallel thereto.Type: ApplicationFiled: July 17, 2008Publication date: August 12, 2010Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroaki Urano, Kazutaka Tatematsu, Yasuji Taketsuna, Yasushi Nishikuma, Yutaka Komatsu