Patents by Inventor Seiji Haga

Seiji Haga 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).

  • Publication number: 20210320555
    Abstract: A frame included in an electronic motor has an inflow hole that allows outside air to flow in an interior of the electric motor and an outflow hole that allows the outside air having flowed in to flow out of the electric motor. The electric motor includes a first partition member forming a first ventilation path between the first partition member and the frame, and a second partition member forming a second ventilation path between the second partition member and the frame. In addition, the stator has a third ventilation path penetrating through the stator from one end to another end of the stator in a direction of a rotational axis and configured to communicate with the first ventilation path and the second ventilation path.
    Type: Application
    Filed: September 7, 2018
    Publication date: October 14, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yoshifumi AJIOKA, Tetsuya SAKURADA, Seiji HAGA, Kazuki IWASA
  • Patent number: 11003227
    Abstract: There is provided a heat sink in which the thermal resistance from a portion where the heat sink directly or indirectly makes contact with a heat-generating device to a portion where the heat sink makes contact with a coolant is set to be a value that is different from the thermal resistance at a different position in the flowing direction of the coolant, so that it is made possible to suppress the temperature difference between the upstream end and the downstream end of the heat-generating device.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: May 11, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazuki Sakata, Masasi Sakai, Masayosi Tamura, Seiji Haga
  • Patent number: 10752263
    Abstract: A vehicular cooling device includes an opening, a discharge port, an air channel, and a fan. The opening is formed in a surface parallel to a travelling direction of a vehicle. The discharge port is formed in a surface of the housing and connected to the opening via the air channel. The fan is provided inside the air channel. First blockers are spaced apart in the travelling direction in the opening. Each first blocker extends in a direction perpendicular to both the travelling direction and an inflow direction of the outside air, and includes first and second members. The first member is a plate-like member having a main surface intersecting the travelling direction. The first member and the second member are symmetric with respect to a plane perpendicular to the travelling direction, and have a travelling-direction spacing therebetween that increases along the inflow direction of the outside air.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: August 25, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tetsuya Sakurada, Kenichi Nakagawa, Kazuki Iwasa, Seiji Haga
  • Patent number: 10455734
    Abstract: A liquid coolant supplying header is configured on a central portion in the width direction between an upper portion heatsink and a partitioning plate, a liquid coolant discharging header is configured on a central portion in the width direction between a lower portion heatsink and the partitioning plate so as to be parallel to the liquid coolant supplying header, vertical flow channels are formed so as to pass through the partitioning plate vertically on two sides in the width direction so as to be parallel to the liquid coolant supplying header, a liquid coolant distributing structural body is disposed inside the liquid coolant supplying header, and an external shape of the liquid coolant distributing structural body is formed such that flow channel cross-sectional area of the liquid coolant supplying header becomes gradually smaller from an upstream end toward a downstream end.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: October 22, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shigenobu Tochiyama, Seiji Haga, Masayoshi Tamura, Satoshi Ishibashi, Shinsuke Idenoue
  • Publication number: 20190039630
    Abstract: A vehicular cooling device includes an opening, a discharge port, an air channel, and a fan. The opening is formed in a surface parallel to a travelling direction of a vehicle. The discharge port is formed in a surface of the housing and connected to the opening via the air channel. The fan is provided inside the air channel. First blockers are spaced apart in the travelling direction in the opening. Each first blocker extends in a direction perpendicular to both the travelling direction and an inflow direction of the outside air, and includes first and second members. The first member is a plate-like member having a main surface intersecting the travelling direction. The first member and the second member are symmetric with respect to a plane perpendicular to the travelling direction, and have a travelling-direction spacing therebetween that increases along the inflow direction of the outside air.
    Type: Application
    Filed: February 29, 2016
    Publication date: February 7, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tetsuya Sakurada, Kenichi Nakagawa, Kazuki Iwasa, Seiji Haga
  • Publication number: 20180024599
    Abstract: There is provided a heat sink in which the thermal resistance from a portion where the heat sink directly or indirectly makes contact with a heat-generating device to a portion where the heat sink makes contact with a coolant is set to be a value that is different from the thermal resistance at a different position in the flowing direction of the coolant, so that it is made possible to suppress the temperature difference between the upstream end and the downstream end of the heat-generating device.
    Type: Application
    Filed: June 3, 2015
    Publication date: January 25, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kazuki SAKATA, Masasi SAKAI, Masayosi TAMURA, Seiji HAGA
  • Publication number: 20170280589
    Abstract: A liquid coolant supplying header is configured on a central portion in the width direction between an upper portion heatsink and a partitioning plate, a liquid coolant discharging header is configured on a central portion in the width direction between a lower portion heatsink and the partitioning plate so as to be parallel to the liquid coolant supplying header, vertical flow channels are formed so as to pass through the partitioning plate vertically on two sides in the width direction so as to be parallel to the liquid coolant supplying header, a liquid coolant distributing structural body is disposed inside the liquid coolant supplying header, and an external shape of the liquid coolant distributing structural body is formed such that flow channel cross-sectional area of the liquid coolant supplying header becomes gradually smaller from an upstream end toward a downstream end.
    Type: Application
    Filed: June 14, 2017
    Publication date: September 28, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Shigenobu TOCHIYAMA, Seiji HAGA, Masayoshi TAMURA, Satoshi ISHIBASHI, Shinsuke IDENOUE
  • Patent number: 9594222
    Abstract: There are provided a heat transfer part 21 having heat-receiving surfaces 211a and 211b which have curved surface shapes along side surfaces 111 and 121 of a stem 11 and a cylindrical part 12 and in which the stem 11 and the cylindrical part 12 can be fitted, and heat-dissipating surfaces 212a and 212b provided with projected and retracted portions 213a and 213b; and a casing 22 having the optical distributor 1 and the heat transfer part 21 mounted thereon, and having heat-receiving surfaces 222a and 222b provided with projected and retracted portions 223a and 223b engaged with the projected and retracted portions 213a and 213b.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: March 14, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hideki Goto, Naoto Himura, Noriyuki Tani, Seiji Haga, Masayoshi Tamura
  • Patent number: 9291404
    Abstract: The cooling device comprises a heat exchange unit provided in a cooling water flow path. The heat exchange unit has a plate part in the form of a plate and multiple fins erected on the plate face of the plate part, and provided in the manner that the plate face of the plate part extends along the cooling water flow path and the cooling water runs through the space between the fins. The multiple fins are each in the form of a rhombic column and provided on the plate part in a lattice pattern in the manner that the longer diagonal of the rhombic column extends along the cooling water flow path.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: March 22, 2016
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masayoshi Tamura, Seiji Haga, Yosuke Kikuchi
  • Publication number: 20150355425
    Abstract: There are provided a heat transfer part 21 having heat-receiving surfaces 211a and 211b which have curved surface shapes along side surfaces 111 and 121 of a stem 11 and a cylindrical part 12 and in which the stem 11 and the cylindrical part 12 can be fitted, and heat-dissipating surfaces 212a and 212b provided with projected and retracted portions 213a and 213b; and a casing 22 having the optical distributor 1 and the heat transfer part 21 mounted thereon, and having heat-receiving surfaces 222a and 222b provided with projected and retracted portions 223a and 223b engaged with the projected and retracted portions 213a and 213b.
    Type: Application
    Filed: December 13, 2013
    Publication date: December 10, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hideki GOTO, Naoto HIMURA, Noriyuki TANI, Seiji HAGA, Masayoshi TAMURA
  • Patent number: 9030064
    Abstract: The totally-enclosed fan-cooled motor includes the stator; the rotor; the drive side bracket; the counter drive side bracket; a pair of the bearings; the external fan that sends cooling air to the stator; the internal fan; the heat radiator that is arranged on an outer side of the drive side bracket and is mounted on the rotation shaft; the cover that contains a joint, which connects the rotation shaft extending to an outer side of the drive side bracket of the motor and a reduction gear, and is provided in parallel with the joint; and the ventilation path that is arranged between the drive side bracket and an end of the cover, and includes the outlet causes the cooling air induced by rotation of the heat radiator to flow to the heat radiator and discharges the cooling air outside the motor.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: May 12, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Seiji Haga, Kazuto Minagawa, Tadashi Maeda
  • Publication number: 20140158324
    Abstract: A liquid coolant supplying header is configured on a central portion in the width direction between an upper portion heatsink and a partitioning plate, a liquid coolant discharging header is configured on a central portion in the width direction between a lower portion heatsink and the partitioning plate so as to be parallel to the liquid coolant supplying header, vertical flow channels are formed so as to pass through the partitioning plate vertically on two sides in the width direction so as to be parallel to the liquid coolant supplying header, a liquid coolant distributing structural body is disposed inside the liquid coolant supplying header, and an external shape of the liquid coolant distributing structural body is formed such that flow channel cross-sectional area of the liquid coolant supplying header becomes gradually smaller from an upstream end toward a downstream end.
    Type: Application
    Filed: November 21, 2013
    Publication date: June 12, 2014
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shigenobu TOCHIYAMA, Seiji HAGA, Masayoshi TAMURA, Satoshi ISHIBASHI, Shinsuke IDENOUE
  • Publication number: 20130220587
    Abstract: The cooling device comprises a heat exchange unit provided in a cooling water flow path. The heat exchange unit has a plate part in the form of a plate and multiple fins erected on the plate face of the plate part, and provided in the manner that the plate face of the plate part extends along the cooling water flow path and the cooling water runs through the space between the fins. The multiple fins are each in the form of a rhombic column and provided on the plate part in a lattice pattern in the manner that the longer diagonal of the rhombic column extends along the cooling water flow path.
    Type: Application
    Filed: January 24, 2013
    Publication date: August 29, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masayoshi Tamura, Seiji Haga, Yosuke Kikuchi
  • Publication number: 20130119795
    Abstract: The totally-enclosed fan-cooled motor includes the stator; the rotor; the drive side bracket; the counter drive side bracket; a pair of the bearings; the external fan that sends cooling air to the stator; the internal fan; the heat radiator that is arranged on an outer side of the drive side bracket and is mounted on the rotation shaft; the cover that contains a joint, which connects the rotation shaft extending to an outer side of the drive side bracket of the motor and a reduction gear, and is provided in parallel with the joint; and the ventilation path that is arranged between the drive side bracket and an end of the cover, and includes the outlet causes the cooling air induced by rotation of the heat radiator to flow to the heat radiator and discharges the cooling air outside the motor.
    Type: Application
    Filed: July 28, 2010
    Publication date: May 16, 2013
    Applicant: Mitsubishi Electric Corporation
    Inventors: Seiji Haga, Kazuto Minagawa, Tadashi Maeda
  • Patent number: 7629717
    Abstract: In a totally-enclosed fan-cooled motor wherein a drive side of a rotation shaft and a side opposite to the drive side are held by means of bearings and so that drive power would be transmitted from the drive side of the rotation shaft with which a rotor is formed into one body, wind is sent to an outer side of the motor in an axial direction of the rotation shaft by means of an external fan provided on the side opposite to the drive side to cool a stator in the air-tightly closed motor and air in the motor is circulated by means of an internal fan provided in the motor to cool a rotor, provided is a radiator mounted to the rotation shaft so as to be located on an outer side of the bearing holding the drive side of the rotation shaft, outside the motor, and in the vicinity of the bearing. This allows a cooling effect of the bearing provided on the drive side to be improved.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: December 8, 2009
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Nobuhiro Kanei, Seiji Haga, Kiyoshi Horiuchi, Kenji Sonoyama
  • Publication number: 20090114372
    Abstract: A heat sink includes a heat-transfer container incorporating a flow path through which a cooling fluid flows, for cooling a heating element in contact with the heat-transfer container The flow path includes a first cross-sectional portion that becomes narrower as the distance between a given point in the flow path and a side of the heat-transfer container which makes contact with the heating element becomes longer in a direction perpendicular to the direction in which the cooling fluid flows, and a second cross-sectional portion that is approximately constant in the direction perpendicular to the direction in which the cooling fluid flows. The first cross-sectional portion and the second cross-sectional portion alternately continue in the direction in which the cooling fluid flows causing a three-dimensional flow so the heat-transfer properties are enhanced with a simplified structure.
    Type: Application
    Filed: September 13, 2005
    Publication date: May 7, 2009
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shigetoshi Ippoushi, Tetsuro Ogushi, Seiji Haga, Toru Kimura, Akira Yamada, Hiroshi Yamabuchi, Akihiro Murahashi, Hideo Okayama, Nobuaki Uehara
  • Publication number: 20080036314
    Abstract: In a totally-enclosed fan-cooled motor wherein a drive side of a rotation shaft and a side opposite to the drive side are held by means of bearings and so that drive power would be transmitted from the drive side of the rotation shaft with which a rotor is formed into one body, wind is sent to an outer side of the motor in an axial direction of the rotation shaft by means of an external fan provided on the side opposite to the drive side to cool a stator in the air-tightly closed motor and air in the motor is circulated by means of an internal fan provided in the motor to cool a rotor, provided is a radiator mounted to the rotation shaft so as to be located on an outer side of the bearing holding the drive side of the rotation shaft, outside the motor, and in the vicinity of the bearing. This allows a cooling effect of the bearing provided on the drive side to be improved.
    Type: Application
    Filed: June 20, 2005
    Publication date: February 14, 2008
    Inventors: Nobuhiro Kanei, Seiji Haga, Kiyoshi Horiuchi, Kenji Sonoyama
  • Patent number: 4166125
    Abstract: 2-Oxo-phenylbutanoic acid derivatives of the general formula (I) ##STR1## wherein X is amino, hydroxy or lower alkoxy, which have an anti-inflammatory activity and low toxicity, a method for the production of the said derivatives, a pharmaceutical composition containing a therapeutically effective amount of at least one compound of the said derivatives, and the use of such compounds and compositions in therapeutics.
    Type: Grant
    Filed: December 19, 1977
    Date of Patent: August 28, 1979
    Assignee: Grelan Pharmaceutical Co., Ltd.
    Inventors: Kazuo Kigasawa, Mineharu Hiiragi, Haruhide Ishimaru, Seiji Haga, Keiko Shirayama