Patents by Inventor Masahiro Seguchi
Masahiro Seguchi 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: 20140125187Abstract: In a stator having a stator core and phase windings, slots are formed in the stator core and each slot accommodates conductors in a layer structure from one end to the other end of the slot in a radial direction of the stator core. The phase windings in one phase have conductors accommodated in a first slot and a second slot which are adjacently formed in the stator core. An electrical connection between the conductors in a n-th layer and the conductors in a (n+1)-th layer includes that the conductors accommodated in the first slot are electrically connected together, the conductors accommodated in the second slot are electrically connected together, and the conductors accommodated in the first slot are electrically connected with the conductors accommodated in the second slot. This connection eliminates a phase difference in the first slot and the second slot in a distributed winding structure.Type: ApplicationFiled: November 6, 2013Publication date: May 8, 2014Applicant: DENSO CORPORATIONInventors: Hideaki SUZUKI, Masahiro SEGUCHI, Yuki TAKAHASHI, Shinsuke SUGIURA
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Publication number: 20140125185Abstract: A stator includes a hollow cylindrical stator core and a stator coil. The stator core has a plurality of slots formed therein. The stator coil is provided in the slots of the stator core in a plurality of layers in a radial direction of the stator core, and includes a first winding and a second winding. The first winding extends around the stator core so as to be located at the (2n?1)th and 2nth layers of the stator coil, and has an end located at the 2nth layer, where n is a natural number. The second winding extends around the stator core so as to be located at the (2n+1)th and (2n+2)th layers of the stator coil, and has an end located at the (2n+1)th layer. The ends of the first and second windings, which are respectively located at the 2nth and (2n+1)th layers, are electrically connected to each other.Type: ApplicationFiled: November 1, 2013Publication date: May 8, 2014Applicant: DENSO CORPORATIONInventors: Hideaki SUZUKI, Masahiro SEGUCHI, Yuki TAKAHASHI
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Publication number: 20140125186Abstract: In a stator having a stator core and three phase windings, slots are formed in the stator core. The phase winding are accommodated in layers, from one side to the other side in the corresponding slot along a radial direction of the stator core. The phase windings are arranged in a star-delta composite connection structure. The phase winding in each phase is comprised of conductors accommodated in a first slot and a second slot adjacently arranged in the stator core so that the conductor in the n-th layer is electrically connected to the conductor in the (n+1)-th layer, ascending order, per slot. Because each winding has the same length and no difference in electric potential occurs between the star connection and the delta connection, this structure suppress generation of operation noise and a circulating current through the stator core and prevents loss due to the circulating current.Type: ApplicationFiled: November 6, 2013Publication date: May 8, 2014Applicant: DENSO CORPORATIONInventors: Yuki TAKAHASHI, Masahiro SEGUCHI, Hideaki SUZUKI
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Patent number: 8686605Abstract: In a rotary electric machine, a stator coil includes in-slot portions each contained in a corresponding one of slots of a stator core. The stator coil includes turn portions each connecting one end of a corresponding one of the in-slot portions projecting from one axial end of the stator core with one end of a corresponding alternative one of the in-slot portions projecting the one axial end of the stator core. The turn portions provide an end portion of the stator coil. A coolant guide is placed to cover a circumferential outer part of the end portion of the stator coil from radially outside thereof and provided with holes therethrough. The coolant guide guides a coolant therealong in a circumferential direction of the end portion of the stator coil while guiding, through the holes, a part of the coolant to the end portion of the stator coil.Type: GrantFiled: June 24, 2011Date of Patent: April 1, 2014Assignees: Nippon Soken, Inc., Denso CorporationInventors: Takutou Takahashi, Kazunori Uchiyama, Naoki Hakamada, Masahiro Seguchi
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Patent number: 8678162Abstract: A bill handling apparatus includes: a first loop-like conveying path that includes a bill discriminating unit, is connected to a bill receiving and dispensing port and a temporary storage unit, and connected to a plurality of loading boxes to convey bills in two directions; a second conveying path connected to the loading box to convey bills in two directions; a first gate that connects the first conveying path with the second conveying path and switches a conveying direction of the conveying path that conveys bills; and a controller that controls switching of the first gate and conveyance of the conveying path. The controller controls the bills conveyed to the first conveying path in one of the two directions to be conveyed to the loading box through the second conveying path via the first gate, and the bills conveyed from the loading box through the second conveying path to be conveyed to the first conveying path in one of the two directions via the first gate.Type: GrantFiled: November 24, 2010Date of Patent: March 25, 2014Assignee: Hitachi-Omron Terminal Solutions, Corp.Inventors: Hirokazu Aoji, Sho Mizuno, Masahiro Seguchi, Shuuji Tanaka, Takeshi Kanagawa, Toru Yasueda
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Publication number: 20130334910Abstract: A rotor for an electric rotating machine includes a hollow cylindrical rotor core and a plurality of magnets. The rotor core has a plurality of magnet-receiving holes formed therein. Each of the magnet-receiving holes has a plurality of wall surfaces including a radially innermost wall surface which is positioned radially innermost among the plurality of wall surfaces. Each of the magnets is received in a corresponding one of the magnet-receiving holes of the rotor core. Further, each of the magnets is arranged in the corresponding magnet-receiving hole so that among the thermal resistances between the magnet and the plurality of wall surfaces of the corresponding magnet-receiving hole, the thermal resistance between the magnet and the radially innermost wall surface of the corresponding magnet-receiving hole is lowest.Type: ApplicationFiled: March 18, 2013Publication date: December 19, 2013Applicant: DENSO CORPORATIONInventors: Yuki TAKAHASHI, Masahiro SEGUCHI, Hideaki SUZUKI
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Publication number: 20130270958Abstract: A rotary electric machine includes a stator and a rotor located in a rotatable manner relative to the stator via a gap. The stator includes a multi-phase stator winding that is held in a plurality of slots formed in the stator. The rotor includes at least one magnet section embedded therein so as to face the slots. The magnet section includes a plurality of axially laminated magnets with a skew angle which is an angle of a positional difference between the magnets. This skew angle ?s is set so as to satisfy ?s=k?/2 where ? is a slot pitch which is an angle between the slots, and k is a coefficient set based on: an arc ratio ?a being an angle covering an area in which magnetic flux radially flows from the magnetic section; and a slot factor S being a ratio of the slots relative to the magnet section.Type: ApplicationFiled: April 12, 2013Publication date: October 17, 2013Applicant: DENSO CORPORATIONInventors: Yuki TAKAHASHI, Masahiro SEGUCHI
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Publication number: 20130140133Abstract: A bill handling apparatus includes: a first loop-like conveying path that includes a bill discriminating unit, is connected to a bill receiving and dispensing port and a temporary storage unit, and connected to a plurality of loading boxes to convey bills; a second conveying path connected to the loading box to convey bills; a first gate that switches a conveying direction of the conveying path that conveys bills; and a controller that controls switching of the first gate and conveyance of the conveying path. The controller controls the bills conveyed to the first conveying path in one of two directions to be conveyed to the loading box through the second conveying path via the first gate, and the bills conveyed from the loading box through the second conveying path to be conveyed to the first conveying path in one of the two directions via the first gate.Type: ApplicationFiled: January 29, 2013Publication date: June 6, 2013Inventors: HIROKAZU AOJI, Sho MIZUNO, Masahiro SEGUCHI, Shuuji TANAKA, Takeshi KANAGAWA, Toru YASUEDA
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Publication number: 20120248918Abstract: A rotor includes a rotor core comprised of steel sheets that are laminated in the axial direction of the rotor core and a rotating component configured to rotate together with the rotor core. Each of the steel sheets has a positioning portion for circumferentially positioning the steel sheet with respect to the rotating component and is formed of a rolled steel material. For each of the steel sheets, the direction of rolling of the steel sheet is circumferentially offset from both imaginary lines X and Y by predetermined angles. Each of the steel sheets is shaped so that the circumferential position of the positioning portion thereof remains unchanged when the steel sheet is front-back inverted about the imaginary line X. When viewed along the axial direction, at least one of the steel sheets is front-back inverted with respect to and thus forms a mirror image of the other steel sheets.Type: ApplicationFiled: March 30, 2012Publication date: October 4, 2012Applicant: DENSO CORPORATIONInventors: Yuuichirou Itou, Masahiro Seguchi, Yuki Takahashi, Hideaki Suzuki
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Publication number: 20120223607Abstract: A rotor includes a rotor core and permanent magnets each of which is received in a corresponding slot of the rotor core with its magnetization direction being oblique to a radial direction of the rotor core. Each of the permanent magnets has a first corner portion positioned radially outermost and a second corner portion positioned radially innermost. For each of the permanent magnets, there are formed first and second gaps respectively between the first corner portion and the inner surface of the corresponding slot and between the second corner portion and the inner surface of the corresponding slot in a reference direction of the permanent magnet. The rotor core also has, for each of the permanent magnets, supporting portions each of which abuts and thereby supports, in the reference direction, a predetermined portion of the permanent magnet which is positioned away from both the first and second corner portions.Type: ApplicationFiled: March 2, 2012Publication date: September 6, 2012Applicant: DENSO CORPORATIONInventors: Kazunori UCHIYAMA, Naoki HAKAMADA, Masahiro SEGUCHI
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Publication number: 20120146447Abstract: A stator includes a ring-shaped stator core and a stator winding. The stator core has a plurality of slots arranged in a circumferential direction. The stator winding has a plurality of phase windings. Each phase winding is composed of a plurality of segment conductors 41 disposed such as to be inserted into the slots and connected in series. The segment conductor is divided into two. The phase winding is configured by two divided phase windings connected to each other in parallel. The divided phase windings are respectively configured by a plurality of segment conductors respectively connected in series such that the two divided segment conductors are in parallel with each other.Type: ApplicationFiled: December 13, 2011Publication date: June 14, 2012Applicant: DENSO CORPORATIONInventors: Masahiro SEGUCHI, Yuuichirou ITOU
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Publication number: 20110316367Abstract: In a rotary electric machine, a stator coil includes in-slot portions each contained in a corresponding one of slots of a stator core. The stator coil includes turn portions each connecting one end of a corresponding one of the in-slot portions projecting from one axial end of the stator core with one end of a corresponding alternative one of the in-slot portions projecting the one axial end of the stator core. The turn portions provide an end portion of the stator coil. A coolant guide is placed to cover a circumferential outer part of the end portion of the stator coil from radially outside thereof and provided with holes therethrough. The coolant guide guides a coolant therealong in a circumferential direction of the end portion of the stator coil while guiding, through the holes, a part of the coolant to the end portion of the stator coil.Type: ApplicationFiled: June 24, 2011Publication date: December 29, 2011Applicants: DENSO CORPORATION, NIPPON SOKEN, INC.Inventors: Takutou TAKAHASHI, Kazunori UCHIYAMA, Naoki HAKAMADA, Masahiro SEGUCHI
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Patent number: 8049458Abstract: A speed-variable field winding type of synchronous rotary electric machine is provided, where a rotor with plural-phase windings faces a rotor with a field winding. A field current is limited to flow through the field winding in one direction thereof. A fundamental component of armature current, which corresponds to a synchronizing current for producing a rotating magnetic field rotating in sync with the rotation of the rotor, is supplied to the armature windings. The synchronizing current is adjusted in frequency to change a rotor rotation speed. A pulsed rotor exciting current is supplied to the armature windings. The exciting current causes the field winding to induce the field current only during a specified current-supply duration shorter than a one cycle of the synchronizing current. The number of current-supply times for the exciting current, per electrical angle 2? and per phase, has a positive correlation with the cycle of the synchronizing current.Type: GrantFiled: September 17, 2008Date of Patent: November 1, 2011Assignee: Denso CorporationInventor: Masahiro Seguchi
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Publication number: 20110221286Abstract: An electric rotating machine includes a stator, a rotor, and a housing. The stator includes a stator core and a stator coil formed by laminating magnetic steel sheets. Each of the magnetic steel sheets has through-holes that are formed to penetrate the magnetic steel sheet in the axial direction of the stator core. All of the magnetic steel sheets are divided into groups each of which includes axially-adjacent n of the magnetic steel sheets, where n is an integer not less than 2. For each of the groups, corresponding n of the through-holes of the n magnetic steel sheets of the group communicate with one other to form an inside coolant passage. The inside coolant passage fluidically connects an outside coolant passage, which is formed between the housing and the radially outer surface of the stator core, with a corresponding one of the slots of the stator core.Type: ApplicationFiled: March 11, 2011Publication date: September 15, 2011Applicants: NIPPON SOKEN, INC., DENSO CORPORATIONInventors: Kazunori Uchiyama, Naoki Hakamada, Masahiro Seguchi
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Publication number: 20110130870Abstract: A bill handling apparatus includes: a first loop-like conveying path that includes a bill discriminating unit, is connected to a bill receiving and dispensing port and a temporary storage unit, and connected to a plurality of loading boxes to convey bills in two directions; a second conveying path connected to the loading box to convey bills in two directions; a first gate that connects the first conveying path with the second conveying path and switches a conveying direction of the conveying path that conveys bills; and a controller that controls switching of the first gate and conveyance of the conveying path. The controller controls the bills conveyed to the first conveying path in one of the two directions to be conveyed to the loading box through the second conveying path via the first gate, and the bills conveyed from the loading box through the second conveying path to be conveyed to the first conveying path in one of the two directions via the first gate.Type: ApplicationFiled: November 24, 2010Publication date: June 2, 2011Inventors: Hirokazu AOJI, Sho MIZUNO, Masahiro SEGUCHI, Shuuji TANAKA, Takeshi KANAGAWA, Toru YASUEDA
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Patent number: 7923884Abstract: In a stator coil of a rotary electric machine, a first crank portion radially shifts one side of a turn portion from the other side thereof by a first length. The one side extends to one of paired straight portions, and the other side extends to the other thereof. A second crank portion radially shifts one side of a turn portion from the other side thereof by a second length. The one side extends to one of the paired straight portions, and the other side extends to the other thereof. The first length is equivalent to a radial width of the turn portion of the first segment of each set. The second length allows the second crank portion of the second segment of each of the sets to substantially overlay the first crank portion of the first segment of each set.Type: GrantFiled: November 18, 2005Date of Patent: April 12, 2011Assignee: Denso CorporationInventors: Masahiro Seguchi, Shinji Kouda, Tetsuya Gorohata
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Patent number: 7880424Abstract: A rotary electric apparatus comprise a synchronous machine of field winding type, an inverter, a DC power supply, a current flow regulator, and a controller. The DC power supply outputs first voltage of a first voltage value and second voltage of a second voltage value higher than the first voltage value. The current flow regulator regulates directions of currents flowing through a field winding by rotor exciting currents into one way, the current flow regulator being electrically connected to the field winding. The controller controls the inverter such that the inverter produces armature currents consisting of synchronized currents producing rotating fields depending on a rotating position of a rotor and rotor exciting currents different in waveforms from the synchronized currents and superposed on the synchronized currents. At least the rotor exciting currents are powered on a second voltage from the DC power supply.Type: GrantFiled: September 27, 2007Date of Patent: February 1, 2011Assignee: Denso CorporationInventor: Masahiro Seguchi
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Publication number: 20100259136Abstract: A plurality of salient poles projecting toward a stator are arranged on a rotor core along the circumferential direction while being spaced apart from each other, and rotor windings are wound around these salient poles. The rotor windings are short-circuited through diodes, respectively; and when currents rectified by the diodes flow through the rotor windings, the salient poles are magnetized to produce a magnet where the magnetic pole is fixed. The width ? of each salient pole in the circumferential direction is smaller than a width corresponding to an electric angle of 180° of the rotor, and the rotor windings are wound around each salient pole by short-pitch winding.Type: ApplicationFiled: October 17, 2008Publication date: October 14, 2010Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, DENSO CORPORATIONInventors: Kenji Hiramoto, Hideo Nakai, Eiji Yamada, Norimoto Minoshima, Masahiro Seguchi
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Patent number: 7806396Abstract: A paper note handling apparatus includes a pay-in and pay-out mouth through which a paper note is paid in or paid out, a conveyance for conveying the paper note, a discrimination part to discriminate authenticity and denomination of the conveyed paper note, a temporary hold part to temporarily hold the paper note, a storing part to store the paper note, and a shifter to shift a position of the paper note in a widthwise direction of conveyance. The shifter rotates in a direction inclined relative to a direction of conveyance of the paper note and comes into contact with the paper note to shift the position of the paper note in the widthwise direction of conveyance.Type: GrantFiled: June 17, 2008Date of Patent: October 5, 2010Assignee: Hitachi-Omron Terminal Solutions, Corp.Inventors: Shunsuke Hayashi, Masahiro Seguchi, Masayasu Ueno, Hidetoshi Hata, Hisanori Takemura, Junji Nishiwaki
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Patent number: 7648138Abstract: A sheet handling apparatus is proposed to be able to stably shift a position of a sheet.Type: GrantFiled: September 12, 2005Date of Patent: January 19, 2010Assignee: Hitachi-Omron Terminal Solutions, Corp.Inventors: Shunsuke Hayashi, Masahiro Seguchi, Masayasu Ueno, Hidetoshi Hata, Hisanori Takemura, Junji Nishiwaki