Patents by Inventor Kenichi Hattori
Kenichi Hattori 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: 7911106Abstract: A rotary electric machine according to present invention comprises a rotor and a stator disposed around the rotor in which the stator includes a stator core having, along its inner periphery region, a plurality of axially extending stator slots and an armature winding wound through the stator slots. In this rotary electric machine, each stator slot contains four radially layered armature bars; each armature winding is formed by electrically connecting at least one of the armature bars in a first slot and at least one of the armature bars in a second slot to each other; and the armature bars of a pair specified in accordance with a required output voltage of the rotary electric machine are connected to each other with a connecting piece.Type: GrantFiled: February 27, 2008Date of Patent: March 22, 2011Assignee: Hitachi, Ltd.Inventors: Kazuhiko Takahashi, Masami Sukeda, Mitsuru Saeki, Kenichi Hattori
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Patent number: 7898128Abstract: The invention aims at providing a forced cooling rotary electric machine capable of bringing temperature distribution close to a designed temperature distribution and avoiding becoming a larger size, and employs a wedge formed with ventilation grooves and a wedge not formed with the ventilation grooves to regulate the flow rates of cooling gas passing through air ducts, so that the cooling gas supplied to a part of a stator core, in which temperature is low, can be caused to flow positively to a part in which the temperature is high and the temperature distribution in the axial direction of the stator core can be uniformized. As a result, the temperature distribution in the axial direction of the stator core can be brought close to a designed temperature distribution, and a forced cooling rotary electric machine that need not be made larger in size with a margin can be obtained.Type: GrantFiled: January 11, 2008Date of Patent: March 1, 2011Assignee: Hitachi, Ltd.Inventors: Kenichi Hattori, Tadaaki Kakimoto, Akitomi Semba, Mitsuru Saeki, Mitsunori Sezaki, Takashi Shibata
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Patent number: 7893574Abstract: In a rotor of a rotary-electric machine, in order to improve a cooling performance of a rotor winding on an end portion of the rotor in an axial direction, the rotor winding being held by a retaining ring of the rotor winding formed by laminating conductors in slots of a rotor iron core extending in an axial direction and having slots formed at predetermined intervals in a peripheral direction, ventilation channels through which cooling air flows are formed in the surfaces of the conductors along a longitudinal direction. The ventilation channels have air inlet holes which guide the cooling air and exhaust holes which exhaust the cooling air, the conductors are laminated to constitute the rotor winding, and the conductors include openings of the air inlet holes in bottoms of the conductors on a side opposite to a side on which the ventilation channels are formed.Type: GrantFiled: November 3, 2009Date of Patent: February 22, 2011Assignee: Hitachi, Ltd.Inventors: Kenichi Hattori, Mitsuru Saeki, Akitomi Semba, Tadaaki Kakimoto, Takashi Watanabe, Manabu Suzuki, Takashi Shibata, Seijiro Muramatsu
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Publication number: 20100322999Abstract: A patch for external use which has a laminate structure comprising a substrate and a pressure-sensitive adhesive layer which contains a styrene/isoprene/styrene block copolymer as the base and further contains a tackifier resin consisting of a rosin resin and at least one other tackifier resin, a softening agent consisting of polybutene and liquid paraffin, a fatty acid ester, and fentanyl, characterized in that the weight ratio of the rosin resin to fentanyl is 1 to 5, the weight ratio of the rosin resin to the whole tackifier resin is 0.1 to 0.6, and the tackifier resin accounts for 30 to 60wt % of the whole pressure-sensitive adhesive layer. The patch is excellent in the permeation of fentanyl through the skin and in storage stability, and is weak in irritation to skin.Type: ApplicationFiled: January 26, 2009Publication date: December 23, 2010Inventors: Kunihiko Matsushita, Mamoru Naruse, Kenichi Hattori
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Patent number: 7786642Abstract: In a rotating machinery having armature windings constituted by a lot of strands, when the armature winding is constituted by four layers, a step number of the strands becomes half with respect to two layers of armature windings so as to facilitate manufacturing an armature winding of 540 degree transposition in which a transposition pitch is elongated and a circulating current loss is reduced, but since an output voltage becomes twice, for securing a voltage limit value caused by an isolation resisting force, one layer of armature windings are constituted by sub windings separated into at least two layers in a vertical direction, a transposition is independently applied to each of the sub windings, the sub windings are connected to the armature windings of the other slot while keeping an isolation of the sub winding at an armature winding end region by at least two connecting methods, and the sub winding constructs a parallel circuit by the armature windings of a plurality of slots.Type: GrantFiled: January 4, 2007Date of Patent: August 31, 2010Assignee: Hitachi, Ltd.Inventors: Kazuhiko Takahashi, Kenichi Hattori, Masami Sukeda, Atsushi Ishihara, Takahiko Sano
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Publication number: 20100185317Abstract: A valuable-medium processing apparatus includes a receptacle in which valuable mediums are put; an escrow unit that temporarily holds the valuable mediums; a storage unit that stores therein the valuable mediums; a transporting unit including a holding route in which the valuable mediums put in the receptacle are temporarily held in the escrow unit and then transported to the storage unit, and a non-holding route in which the valuable mediums put in the receptacle are transported to the storage unit without being held in the escrow unit; and a control unit that, when a predetermined condition is satisfied, controls the transporting unit to determine a transporting route by selecting one of the holding route and the non-holding route, and transport the valuable mediums via the determined route.Type: ApplicationFiled: January 22, 2009Publication date: July 22, 2010Inventors: Makoto ASO, Tomoyuki Kubo, Hirofumi Ozaki, Yoshifumi Kawabata, Kenichi Hattori
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Patent number: 7755230Abstract: A rotary electric machine which is smoothly operated with high efficiency by adequately controlling the cooling gas flow as needed to keep the highest temperature inside the rotary electric machine below a predetermined limit. The rotary electric machine includes a stator with armature windings wound around a stator core, a rotor placed inside the stator in a rotatable manner, and a cooling device for controlling cooling gas flow. It further includes a device for measuring an ambient temperature and a device for detecting armature voltage and/or armature current and/or field current. The temperature inside the rotary electric machine is calculated from the measured ambient temperature, detection value by the detecting device and an directive value of cooling gas flow. And a calculated suitable value of cooling gas flow is determined according to the calculated temperature inside the rotary electric machine.Type: GrantFiled: February 6, 2008Date of Patent: July 13, 2010Assignee: Hitachi, Ltd.Inventors: Akihito Nakahara, Akiyoshi Komura, Kazumasa Ide, Kazuhiko Takahashi, Kengo Iwashige, Kenichi Hattori
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Patent number: 7750525Abstract: An electric rotating machine comprising a stator core having a plurality of slots that are equally spaced on the inner surface of the stator core in the peripheral direction, a rotor that rotates inside the stator core, and an armature winding that is applied to each of the slots, wherein the armature winding is made up with a plurality of serially-connected single-turn coils that are respectively applied to the slots and the serially-connected coils of respective phases are connected in parallel.Type: GrantFiled: August 23, 2007Date of Patent: July 6, 2010Assignee: Hitachi, Ltd.Inventors: Kazuhiko Takahashi, Mitsuru Saeki, Kenichi Hattori, Masami Sukeda, Akihito Nakahara
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Patent number: 7737586Abstract: A rotating electric machine wherein sub slots serving as cooling fluid ducts in the axial direction are provided at the bottoms of the coil slots formed in the rotor, radial cooling fluid ducts are formed through the field coil of the rotor in the radial direction of the rotor and juxtaposed in the axial direction of the rotor, so as to communicate the sub slots with the air gap, and radial cooling fluid ducts are formed through the stator in the radial direction of the stator and juxtaposed in the axial direction of the rotor, corresponding in position to the radial cooling fluid ducts in the rotor, so as to communicate the inner periphery of the stator with the outer periphery of the stator.Type: GrantFiled: August 19, 2008Date of Patent: June 15, 2010Assignee: Hitachi, Ltd.Inventors: Shigeki Tounosu, Kengo Iwashige, Ryuichiro Iwano, Mitsuru Saeki, Kenichi Hattori, Kazuhiko Takahashi
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Publication number: 20100108576Abstract: A banknote handling apparatus 10 comprises a casing 12, an inlet 20 configured for inserting banknotes into the casing 12 from the exterior thereof, a plurality of storages 40 provided in a lower portion of the casing 12, in a substantially horizontal direction and in parallel relative to one another, and respectively adapted for storing therein the banknotes, and an escrow storage 42 juxtaposed with the respective storages 40 in the casing and adapted for escrowing therein the banknotes inserted into the casing 12 from the exterior thereof through the inlet 20. A transport unit 30 adapted for transporting the banknotes between any two of the inlet 20, respective storages 40 and escrow storage 42 is provided above the respective storages 40 and escrow storage 42 in the casing 12. In addition, a plurality of diverters 36 are provided at diversion points 35 in the transport unit 30 toward each of the storages 40 and escrow storage 42, respectively.Type: ApplicationFiled: October 30, 2009Publication date: May 6, 2010Inventors: Mikio Wada, Yasushi Yokota, Junichi Sekiguchi, Kenichi Hattori, Masayuki Mukaida, Hirofumi Masuki
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Publication number: 20100045126Abstract: In a rotor of a rotary-electric machine, in order to improve a cooling performance of a rotor winding on an end portion of the rotor in an axial direction, the rotor winding being held by a retaining ring of the rotor winding formed by laminating conductors in slots of a rotor iron core extending in an axial direction and having slots formed at predetermined intervals in a peripheral direction, ventilation channels through which cooling air flows are formed in the surfaces of the conductors along a longitudinal direction. The ventilation channels have air inlet holes which guide the cooling air and exhaust holes which exhaust the cooling air, the conductors are laminated to constitute the rotor winding, and the conductors include openings of the air inlet holes in bottoms of the conductors on a side opposite to a side on which the ventilation channels are formed.Type: ApplicationFiled: November 3, 2009Publication date: February 25, 2010Inventors: KENICHI HATTORI, MITSURU SAEKI, AKITOMI SEMBA, TADAAKI KAKIMOTO, TAKASHI WATANABE, MANABU SUZUKI, TAKASHI SHIBATA, SEIJIRO MURAMATSU
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Patent number: 7638909Abstract: In a rotor of a rotary-electric machine, in order to improve a cooling performance of a rotor winding, in a rotor winding on an end portion of the rotor in an axial direction, the rotor winding being held by a retaining ring of the rotor winding formed by laminating a plurality of conductors in slots of a rotor iron core extending in an axial direction and having a plurality of slots formed at predetermined intervals in a peripheral direction, ventilation channels through which cooling air flows are formed in the surfaces of the conductors along a longitudinal direction.Type: GrantFiled: October 17, 2006Date of Patent: December 29, 2009Assignee: Hitachi, Ltd.Inventors: Kenichi Hattori, Mitsuru Saeki, Akitomi Semba, Tadaaki Kakimoto, Takashi Watanabe, Manabu Suzuki, Takashi Shibata, Seijiro Muramatsu
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Publication number: 20090304316Abstract: The invention provides a horizontal shaft type rotary machine capable of simply feeding oil into thrust bearing devices. Leak oil introduction means are provided in the circumferential end parts of thrust bearing devices, for introducing leak oil of lubrication oil from horizontal type slide bearing devices onto slide surfaces of the thrust bearing devices. With this configuration, the thrust baring devices can be lubricated with the use of leak oil of lubrication oil from the horizontal type slide bearing devices, and as a result, it is possible to eliminate the necessity of an oil feed system exclusively used for the thrust bearing devices, thereby it is possible to simplify the pipe line arrangement of the oil feed system and the control of oil feed quantity.Type: ApplicationFiled: May 11, 2009Publication date: December 10, 2009Applicant: HITACHI, LTD.Inventors: Kenichi Hattori, Tadaaki Kakimoto, Akitomi Semba, Keiji Fugane, Makoto Hemmi
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Publication number: 20090267428Abstract: A rotating electrical machine includes: a rotor comprising a rotor core and a field winding wound round the rotor core; and a stator comprising a stator core and a stator winding wound round the stator core. The stator is arranged in opposition to the rotor with a predetermined spacing therebetween. the stator core is formed by punching a split piece, which comprises teeth for insertion of the stator winding thereinto and a core back on an outer periphery thereof, from a magnetic steel sheet, and laminating a plurality of those circular configurations in an axial direction, in which a plurality of the split pieces are arranged in a circle in a circumferential direction. The stator core has magnetic steel sheets, which are different in magnetic permeability in a diametrical direction, laminated at an axial end region of and in an axial central region of the stator core.Type: ApplicationFiled: April 23, 2009Publication date: October 29, 2009Inventors: Akihito NAKAHARA, Hiroyuki Mikami, Kazumasa Ide, Kazuhiko Takahashi, Kenichi Hattori
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Publication number: 20090195091Abstract: A rotary electric machine which is smoothly operated with high efficiency by adequately controlling the cooling gas flow as needed to keep the highest temperature inside the rotary electric machine below a predetermined limit. The rotary electric machine includes a stator with armature windings wound around a stator core, a rotor placed inside the stator in a rotatable manner, and a cooling device for controlling cooling gas flow. It further includes a device for measuring an ambient temperature and a device for detecting armature voltage and/or armature current and/or field current. The temperature inside the rotary electric machine is calculated from the measured ambient temperature, detection value by the detecting device and an directive value of cooling gas flow. And a calculated suitable value of cooling gas flow is determined according to the calculated temperature inside the rotary electric machine.Type: ApplicationFiled: February 6, 2008Publication date: August 6, 2009Inventors: Akihito Nakahara, Akiyoshi Komura, Kazumasa Ide, Kazuhiko Takahashi, Kengo Iwashige, Kenichi Hattori
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Publication number: 20090140601Abstract: In a rotary electric machine, for ensuring a cooling air flow between a rotor iron core and a stator iron core without enlarging a rotor, a separation preventing device is provided at a position between adjacent slots so as to correspond to each other at a shrink-fitting position where a retaining ring is shrink-fitted to a rotor iron core. Since a separation preventing position of the retaining ring is located at the shrink-fitting position, it is possible to reduce a length of the retaining ring itself so as not to be adjacent to the end portion of the stator iron core. Accordingly, a gap between the rotor iron core and the stator iron core does not reduce. As a result, it is possible to ensure a cooling air flow between the rotor iron core and the stator iron core without enlarging the rotor.Type: ApplicationFiled: November 28, 2008Publication date: June 4, 2009Inventors: Takayasu Tanaka, Hirohide Murayama, Kenichi Hattori, Kazuhiko Takahashi
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Publication number: 20090058205Abstract: A rotating electric machine wherein sub slots serving as cooling fluid ducts in the axial direction are provided at the bottoms of the coil slots formed in the rotor, radial cooling fluid ducts are formed through the field coil of the rotor in the radial direction of the rotor and juxtaposed in the axial direction of the rotor, so as to communicate the sub slots with the air gap, and radial cooling fluid ducts are formed through the stator in the radial direction of the stator and juxtaposed in the axial direction of the rotor, corresponding in position to the radial cooling fluid ducts in the rotor, so as to communicate the inner periphery of the stator with the outer periphery of the stator.Type: ApplicationFiled: August 19, 2008Publication date: March 5, 2009Inventors: Shigeki Tounosu, Kengo Iwashige, Ryuichiro Iwano, Mitsuru Saeki, Kenichi Hattori, Kazuhiko Takahashi
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Publication number: 20080238240Abstract: A rotary electric machine according to present invention comprises a rotor and a stator disposed around the rotor in which the stator includes a stator core having, along its inner periphery region, a plurality of axially extending stator slots and an armature winding wound through the stator slots. In this rotary electric machine, each stator slot contains four radially layered armature bars; each armature winding is formed by electrically connecting at least one of the armature bars in a first slot and at least one of the armature bars in a second slot to each other; and the armature bars of a pair specified in accordance with a required output voltage of the rotary electric machine are connected to each other with a connecting piece.Type: ApplicationFiled: February 27, 2008Publication date: October 2, 2008Inventors: Kazuhiko TAKAHASHI, Masami Sukeda, Mitsuru Saeki, Kenichi Hattori
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Publication number: 20080169710Abstract: The invention aims at providing a forced cooling rotary electric machine capable of bringing temperature distribution close to a designed temperature distribution and avoiding becoming a larger size, and employs a wedge formed with ventilation grooves and a wedge not formed with the ventilation grooves to regulate the flow rates of cooling gas passing through air ducts, so that the cooling gas supplied to a part of a stator core, in which temperature is low, can be caused to flow positively to a part in which the temperature is high and the temperature distribution in the axial direction of the stator core can be uniformized. As a result, the temperature distribution in the axial direction of the stator core can be brought close to a designed temperature distribution, and a forced cooling rotary electric machine that need not be made larger in size with a margin can be obtained.Type: ApplicationFiled: January 11, 2008Publication date: July 17, 2008Inventors: Kenichi HATTORI, Tadaaki Kakimoto, Akitomi Semba, Mitsuru Saeki, Mitsunori Sezaki, Takashi Shibata
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Patent number: 7368842Abstract: An armature winding includes a plurality of strand groups each having strands transposed and bound in at least two rows and multiple tiers, and a main insulator for covering the strand group. The strands belonging to a strand group on one side of a central strand group has a cross-sectional area smaller than that of the control strand group, and the strands belonging to the strand group on the other side of the central strand group has a cross-sectional area larger than that of the central strand group.Type: GrantFiled: October 4, 2005Date of Patent: May 6, 2008Assignee: Hitachi, Ltd.Inventors: Kenichi Hattori, Kazuhiko Takahashi, Kazumasa Ide, Takashi Shibata, Takashi Watanabe