Patents by Inventor Ryoji Kobayashi
Ryoji Kobayashi 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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Patent number: 11973386Abstract: Since the shape of the insulating paper is complicated, a forming and bending step of the insulating paper is required, and further there is a step of inserting the insulating paper in the middle of coil forming, which causes a problem of damaging the insulating paper. A fitting state of an insulating paper 201 into the inter-coil gap has an annular taper shape in which a diameter dimension D1 of an annular opening of the insulating paper 201 on a coil end tip side is long, and a diameter dimension d2 of an annular opening of the insulating paper 201 on a stator end face side on the opposite side is short. The insulating paper 201 is made to follow the tapered shape of the inter-coil gap 140 between an inner peripheral coil 120 and an outer peripheral coil 130, and the insulating paper 201 is fitted in a state inclined from the coil end tip side to the stator end face side with respect to an axial direction of the stator 20.Type: GrantFiled: March 29, 2019Date of Patent: April 30, 2024Assignee: Hitachi Astemo, Ltd.Inventors: Kenji Nakayama, Ryoji Kobayashi, Yuichiro Baba
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Publication number: 20240001027Abstract: A liquid medicine administration device includes: a needle unit configured to be inserted into and placed on a living body; a liquid medicine supply device provided separately from the needle unit and configured to deliver a liquid medicine filled inside from a distal portion; a tube configured to allow the liquid medicine to flow, the tube having a distal end connected to the needle unit; and a connector to which the liquid medicine supply device is attached, the connector being located at a proximal end of the tube. The connector includes: a valve body that has a disk shape and that opens during delivery of the liquid medicine to allow the liquid medicine supply device to communicate with the tube, and a valve seat that is annular and provided on a tube side with respect to the valve body, the valve seat protruding toward and contacting the valve body.Type: ApplicationFiled: September 19, 2023Publication date: January 4, 2024Applicant: TERUMO KABUSHIKI KAISHAInventors: Kentaro NAKAJIMA, Ryoji KOBAYASHI, Takehiko UEDA
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Publication number: 20240001026Abstract: A liquid medicine administration device includes: a needle unit configured to be inserted into and placed on a living body; a liquid medicine supply device provided separately from the needle unit and configured to deliver a liquid medicine filled inside from a distal portion; a tube configured to allow the liquid medicine to flow, the tube having a distal end connected to the needle unit; and a connector to which are attachable both (i) the liquid medicine supply device, and (ii) a priming solution delivery device configured to deliver a priming solution filled inside from a distal portion. The connector includes: a hollow needle having a needle hole that is formed inside the hollow needle and that communicates with the tube, the hollow needle protruding toward the liquid medicine supply device or the priming solution delivery device, and a valve body that is disposed distal to the hollow needle.Type: ApplicationFiled: September 19, 2023Publication date: January 4, 2024Applicant: TERUMO KABUSHIKI KAISHAInventors: Kentaro NAKAJIMA, Ryoji KOBAYASHI, Takehiko UEDA
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Patent number: 11855509Abstract: An object of the present invention is to provide a sealing member that provides high sealability in a coolant flow path. A rotating electrical machine includes a stator core around which a winding is wound, a stator frame that supports the stator core, a housing that is disposed outside the stator frame and forms a flow path space with the stator frame, and a sealing member that is disposed between the stator frame and the housing. The housing includes a mounting portion on which the sealing member is mounted. The sealing member includes a base portion that is in contact with the housing and the stator frame, and an attachment portion that protrudes from the base portion and is inserted to the mounting portion of the housing.Type: GrantFiled: July 10, 2020Date of Patent: December 26, 2023Assignee: HITACHI ASTEMO, LTD.Inventors: Hayato Fujita, Yuichiro Baba, Ryoji Kobayashi, Toshiki Takahashi, Takuya Miyagi, Kenji Nakayama
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Publication number: 20220247255Abstract: An object of the present invention is to provide a sealing member that provides high sealability in a coolant flow path. A rotating electrical machine includes a stator core around which a winding is wound, a stator frame that supports the stator core, a housing that is disposed outside the stator frame and forms a flow path space with the stator frame, and a sealing member that is disposed between the stator frame and the housing. The housing includes a mounting portion on which the sealing member is mounted. The sealing member includes a base portion that is in contact with the housing and the stator frame, and an attachment portion that protrudes from the base portion and is inserted to the mounting portion of the housing.Type: ApplicationFiled: July 10, 2020Publication date: August 4, 2022Applicant: HITACHI ASTEMO, LTD.Inventors: Hayato FUJITA, Yuichiro BABA, Ryoji KOBAYASHI, Toshiki TAKAHASHI, Takuya MIYAGI, Kenji NAKAYAMA
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Patent number: 11383031Abstract: A catheter assembly includes: a catheter; a catheter hub; an inner needle; a needle hub; and a deflection suppressing mechanism suppressing deflection of the inner needle. The deflection suppressing mechanism includes an upper deflection suppressing portion positioned on an upper side of the inner needle and a lower deflection suppressing portion positioned on a lower side of the inner needle. At least one of the upper deflection suppressing portion and the lower deflection suppressing portion is movable with respect to the needle hub.Type: GrantFiled: September 4, 2019Date of Patent: July 12, 2022Assignee: TERUMO KABUSHIKI KAISHAInventors: Takanori Tominaga, Shinya Kusunoki, Ryoji Kobayashi, Tadasu Tateishi, Masahiro Ishida
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Publication number: 20210393920Abstract: A catheter assembly includes: a catheter; a catheter hub provided at a proximal end of the catheter; a valve body fixed in the catheter hub; and an opening member housed in the catheter hub to open the valve body. The opening member is movable between a first position proximal of the valve body and a second position for opening the valve body by being advanced by a connector inserted into the catheter hub. The opening member includes an engaging portion that engages with the connector with movement to the second position caused by the connector, and maintains the engagement with the connector and retracts the opening member from the valve body to the first position when the connector is retracted in a proximal direction and detached from the catheter hub.Type: ApplicationFiled: September 2, 2021Publication date: December 23, 2021Applicant: TERUMO KABUSHIKI KAISHAInventors: Shota YAMAMOTO, Ryoji KOBAYASHI
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Publication number: 20210203204Abstract: Since the shape of the insulating paper is complicated, a forming and bending step of the insulating paper is required, and further there is a step of inserting the insulating paper in the middle of coil forming, which causes a problem of damaging the insulating paper. A fitting state of an insulating paper 201 into the inter-coil gap has an annular taper shape in which a diameter dimension D1 of an annular opening of the insulating paper 201 on a coil end tip side is long, and a diameter dimension d2 of an annular opening of the insulating paper 201 on a stator end face side on the opposite side is short. The insulating paper 201 is made to follow the tapered shape of the inter-coil gap 140 between an inner peripheral coil 120 and an outer peripheral coil 130, and the insulating paper 201 is fitted in a state inclined from the coil end tip side to the stator end face side with respect to an axial direction of the stator 20.Type: ApplicationFiled: March 29, 2019Publication date: July 1, 2021Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Kenji NAKAYAMA, Ryoji KOBAYASHI, Yuichiro BABA
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Patent number: 10666102Abstract: An electric machine capable of easily and efficiently assembling a rotor core to a rotating shaft is provided. A rotor core is formed by laminating a first steel plate consisting of one or more electromagnetic steel plates having a first protrusion portion to be accommodated in a groove portion of a rotating shaft and a second steel plate consisting of one or more electromagnetic steel plates having a second protrusion portion to be accommodated in the groove portion of the rotating shaft. The first protrusion portion of the first steel plate has a first engaging portion deformed by a side surface of the groove portion of the rotating shaft. At least a part of the first engaging portion of the first steel plate is disposed in a space formed between a second protrusion portion of the second steel plate and the side surface of a groove portion of the rotating shaft.Type: GrantFiled: July 19, 2017Date of Patent: May 26, 2020Assignee: Hitachi Automotive Systems, Ltd.Inventors: Hiromitsu Okamoto, Shinji Yamazaki, Yuichiro Baba, Ryoji Kobayashi, Motoo Kitahara, Yuki Arai
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Patent number: 10547223Abstract: A stator coil that is wound by concentrated winding and installed in a slot of a stator includes a winding part in which a conductor is wound pitch by pitch around a tooth of the stator and connection terminals which extend from both ends of the winding part. The winding part includes a plurality of unit winding subparts of a rectangular annular shape, a unit winding subpart including a pair of first straight-line segments, a pair of second straight-line segments, and curved corner segments which join the first straight-line segments and the second straight-line segments. In one of the pair of first straight-line segments, incline segments where the conductor is shifted by one pitch toward a winding axis direction are formed. In at least one of the unit winding subparts, a part of an incline segment is made by a part of each of the curved corner segments.Type: GrantFiled: April 30, 2015Date of Patent: January 28, 2020Assignee: Hitachi Automotive Systems, Ltd.Inventors: Takashi Ishigami, Yuichiro Baba, Manabu Oshida, Ryoji Kobayashi
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Publication number: 20190388616Abstract: A catheter assembly includes: a catheter; a catheter hub; an inner needle; a needle hub; and a deflection suppressing mechanism suppressing deflection of the inner needle. The deflection suppressing mechanism includes an upper deflection suppressing portion positioned on an upper side of the inner needle and a lower deflection suppressing portion positioned on a lower side of the inner needle. At least one of the upper deflection suppressing portion and the lower deflection suppressing portion is movable with respect to the needle hub.Type: ApplicationFiled: September 4, 2019Publication date: December 26, 2019Applicant: TERUMO KABUSHIKI KAISHAInventors: Takanori TOMINAGA, Shinya KUSUNOKI, Ryoji KOBAYASHI, Tadasu TATEISHI, Masahiro ISHIDA
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Patent number: 10511198Abstract: There is provided a rotor for a rotary electrical machine for improving mechanical strength of the rotor against centrifugal force. The rotary electrical machine is provided with a stator, and a rotor disposed with a gap from the stator, which has a rotor core. The rotor includes a magnet insertion hole, and a permanent magnet inserted into the magnet insertion hole. A clearance part is formed at a position of the magnet insertion hole corresponding to a corner of the inserted permanent magnet, which has a facing surface that is formed to face a surface of the permanent magnet via a gap. The facing surface of the clearance part has inflection points so that each of obtuse angles is formed by the two facing surfaces contiguous with the inflection points.Type: GrantFiled: March 7, 2014Date of Patent: December 17, 2019Assignee: Hitachi Automotive Systems, Ltd.Inventors: Yuji Kano, Hiroshi Hamano, Yasuyuki Saito, Ryoji Kobayashi, Yosuke Umesaki, Manabu Oshida
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Publication number: 20190252936Abstract: An electric machine capable of easily and efficiently assembling a rotor core to a rotating shaft is provided. A rotor core is formed by laminating a first steel plate consisting of one or more electromagnetic steel plates having a first protrusion portion to be accommodated in a groove portion of a rotating shaft and a second steel plate consisting of one or more electromagnetic steel plates having a second protrusion portion to be accommodated in the groove portion of the rotating shaft. The first protrusion portion of the first steel plate has a first engaging portion deformed by a side surface of the groove portion of the rotating shaft. At least a part of the first engaging portion of the first steel plate is disposed in a space formed between a second protrusion portion of the second steel plate and the side surface of a groove portion of the rotating shaft.Type: ApplicationFiled: July 19, 2017Publication date: August 15, 2019Inventors: Hiromitsu OKAMOTO, Shinji YAMAZAKI, Yuichiro BABA, Ryoji KOBAYASHI, Motoo KITAHARA, Yuki ARAI
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Patent number: 10348149Abstract: A stator for a rotating electric machine facilitates the assembly of the stator coils and restricts its length in the axial direction. The stator includes a stator iron core having a plurality of teeth and a plurality of stator coils each being wound on one of the teeth. The stator coils include terminal stator coils, each having a crossover wire and a lead wire. Each crossover wire is connected to one of the stator coils of the same phase and each lead wire being is connected to an object other than the stator coils of the same phase. Each end of the crossover wires and the lead wires is disposed at a different level; a first level being the closest to the stator iron core. At least one of the lead wires of the terminal stator coils is disposed at least one level apart within the range of levels.Type: GrantFiled: August 19, 2015Date of Patent: July 9, 2019Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Yuichiro Baba, Takashi Ishigami, Ryoji Kobayashi, Manabu Oshida, Satoshi Yamamura
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Patent number: 10340756Abstract: A rotating electric machine includes a stator core, a stator winding, and a rotor rotatably disposed via an air gap so as to be allowed to rotate relative to the stator core. A magnetic resistance-altering portion is provided on every other magnetic pole of magnetically-assisted salient pole members. A magnetic pole provided with the magnetic resistance-altering portion and a magnetic pole without the magnetic resistance-altering portion are alternately arranged.Type: GrantFiled: July 17, 2018Date of Patent: July 2, 2019Assignee: Hitachi Automotive Systems, Ltd.Inventors: Yasuyuki Saito, Hiroshi Hamano, Ryoji Kobayashi, Taisuke Ikeda, Yuji Kano
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Patent number: 10305338Abstract: A rotor for a rotating electric machine has interference and lightening holes. The rotor includes a shaft and a rotor iron core. The shaft is press fitted in the rotor iron core. The rotor iron core includes a shaft hole, an outer area, an inner area in which the shaft is press fitted, a plurality of ribs connecting the outer area and the inner area. Each of the ribs includes a plurality of outer rib joints adjacent to the outer area, a plurality of outer rib portions adjacent to the outer area, a plurality of inner rib joints adjacent to the inner area, and a plurality of inner rib portions adjacent to the inner area. The outer rib portions are connected to the inner rib portions and the total number of the inner rib joints is larger than that of the outer rib joints.Type: GrantFiled: August 17, 2015Date of Patent: May 28, 2019Assignee: Hitachi Automotive Systems, Ltd.Inventors: Manabu Oshida, Satoshi Yamamura, Ryoji Kobayashi, Yuichiro Baba, Yuji Saito
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Publication number: 20180342914Abstract: A rotating electric machine includes a stator core, a stator winding, and a rotor rotatably disposed via an air gap so as to be allowed to rotate relative to the stator core. A magnetic resistance-altering portion is provided on every other magnetic pole of magnetically-assisted salient pole members. A magnetic pole provided with the magnetic resistance-altering portion and a magnetic pole without the magnetic resistance-altering portion are alternately arranged.Type: ApplicationFiled: July 17, 2018Publication date: November 29, 2018Inventors: Yasuyuki SAITO, Hiroshi HAMANO, Ryoji KOBAYASHI, Taisuke IKEDA, Yuji KANO
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Patent number: 10056794Abstract: A rotating electric machine, in which a cross conductors of a stator connect slot conductors so as to stride N+1 slots at coil ends on one side and stride N?1 slots at coil ends on another side, with N representing a number of slots per pole, a stator winding includes a plurality of slot conductor groups each made up with a plurality of slot conductors corresponding to a single phase, the plurality of slot conductors in each slot conductor group are inserted at a predetermined number Ns of successive slots forming a continuous range along a circumference of the stator core so that the slot conductors in the slot conductor group take successive slot positions and successive layer positions, Ns=NSPP+NL when NSPP represents a number of slots per pole per phase and a number of layers is expressed as 2×NL.Type: GrantFiled: December 4, 2017Date of Patent: August 21, 2018Assignee: Hitachi Automotive Systems, Ltd.Inventors: Yasuyuki Saito, Hiroshi Hamano, Ryoji Kobayashi, Taisuke Ikeda, Yuji Kano
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Publication number: 20180091007Abstract: A rotating electric machine, in which a cross conductors of a stator connect slot conductors so as to stride N+1 slots at coil ends on one side and stride N?1 slots at coil ends on another side, with N representing a number of slots per pole, a stator winding includes a plurality of slot conductor groups each made up with a plurality of slot conductors corresponding to a single phase, the plurality of slot conductors in each slot conductor group are inserted at a predetermined number Ns of successive slots forming a continuous range along a circumference of the stator core so that the slot conductors in the slot conductor group take successive slot positions and successive layer positions, Ns=NSPP+NL when NSPP represents a number of slots per pole per phase and a number of layers is expressed as 2×NL.Type: ApplicationFiled: December 4, 2017Publication date: March 29, 2018Inventors: Yasuyuki Saito, Hiroshi Hamano, Ryoji Kobayashi, Taisuke Ikeda, Yuji Kano
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Patent number: 9871417Abstract: A rotating electric machine, in which a cross conductors of a stator connect slot conductors so as to stride N+1 slots at coil ends on one side and stride N?1 slots at coil ends on another side, with N representing a number of slots per pole, a stator winding includes a plurality of slot conductor groups each made up with a plurality of slot conductors corresponding to a single phase, the plurality of slot conductors in each slot conductor group are inserted at a predetermined number Ns of successive slots forming a continuous range along a circumference of the stator core so that the slot conductors in the slot conductor group take successive slot positions and successive layer positions, Ns=NSPP+NL when NSPP represents a number of slots per pole per phase and a number of layers is expressed as 2×NL.Type: GrantFiled: January 9, 2013Date of Patent: January 16, 2018Assignee: Hitachi Automotive Systems, Ltd.Inventors: Yasuyuki Saito, Hiroshi Hamano, Ryoji Kobayashi, Taisuke Ikeda, Yuji Kano