Patents by Inventor Hiroaki Aso

Hiroaki Aso 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).

  • Patent number: 7545061
    Abstract: A rotating electric machine for vehicles is capable of improving a cooling performance of switching elements forming an inverter module, and small-sizing the entire rotating electric machine. The rotating electric machine includes: a stator; a rotor, a cooling fan; a front bracket and a rear bracket; and a cover; and in which a pair of switching elements are disposed axially adjacent to each other between the rear bracket and the cover; a ventilation hole for sucking an outside air is formed on an axial wall of the cover; and by rotation of the cooling fan, the outside air flows from the ventilation hole with respect to the switching elements, and goes through a suction port and is discharged through a discharge port.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: June 9, 2009
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshihito Asao, Yutaka Kitamura, Hiroaki Aso
  • Patent number: 7400070
    Abstract: A rotating electric machine for vehicles is capable of improving a cooling performance of switching elements forming an inverter module, and small-sizing the entire rotating electric machine. The rotating electric machine includes: a stator; a rotor, a cooling fan; a front bracket and a rear bracket; and a cover; and in which a pair of switching elements are disposed axially adjacent to each other between the rear bracket and the cover; a ventilation hole for sucking outside air is formed in a radially outer circumferential portion of the cover; and by rotation of the cooling fan, the outside air flows radially from the ventilation hole with respect to the switching elements and goes through a suction port and is discharged through a discharge port.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: July 15, 2008
    Assignee: Mitsubishi Electric Corp.
    Inventors: Yoshihito Asao, Yutaka Kitamura, Hiroaki Aso
  • Patent number: 7332644
    Abstract: The objects of the present invention is to provide a preventive method for the progress of neuropsychiatric disorders, a therapeutic agent for neuropsychiatric disorders, a screening method thereof, and a therapeutic method through the analysis of the mechanisms leading to neuropsychiatric disorders such as Nasu-Hakola diseases and the like. The non-human animal model of oligodendrocytes developmental disorders was generated by making the DAP12 gene function deficient on its chromosome. The DAP12 knockout mouse develops myelination disorders including hypomyelinosis in the brain, particularly in the frontal head and the thalamus, further leading to neuropsychiatric disorders such as Nasu-Hakola disease and the like with aging. The screening method for a therapeutic agent, the diagnostic method, and the therapeutic method, wherein the DAP12 knockout mouse developing these disorders are used, have been developed.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: February 19, 2008
    Assignee: Japan Science and Technology Agency
    Inventors: Toshiyuki Takai, Hiroaki Aso, Michihiro Fujiwara
  • Publication number: 20070035185
    Abstract: A rotating electric machine for vehicles is capable of improving a cooling performance of switching elements forming an inverter module, and small-sizing the entire rotating electric machine. The rotating electric machine includes: a stator; a rotor, a cooling fan; a front bracket and a rear bracket; and a cover; and in which a pair of switching elements are disposed axially adjacent to each other between the rear bracket and the cover; a ventilation hole for sucking an outside air is formed on an axial wall of the cover; and by rotation of the cooling fan, the outside air flows from the ventilation hole with respect to the switching elements, and goes through a suction port and is discharged through a discharge port.
    Type: Application
    Filed: August 9, 2006
    Publication date: February 15, 2007
    Inventors: Yoshihito Asao, Yutaka Kitamura, Hiroaki Aso
  • Publication number: 20070035186
    Abstract: A rotating electric machine for vehicles is capable of improving a cooling performance of switching elements forming an inverter module, and small-sizing the entire rotating electric machine. The rotating electric machine includes: a stator; a rotor, a cooling fan; a front bracket and a rear bracket; and a cover; and in which a pair of switching elements are disposed axially adjacent to each other between the rear bracket and the cover; a ventilation hole for sucking outside air is formed in a radially outer circumferential portion of the cover; and by rotation of the cooling fan, the outside air flows radially from the ventilation hole with respect to the switching elements and goes through a suction port and is discharged through a discharge port.
    Type: Application
    Filed: August 9, 2006
    Publication date: February 15, 2007
    Inventors: Yoshihito Asao, Yutaka Kitamura, Hiroaki Aso
  • Publication number: 20050210538
    Abstract: The objects of the present invention is to provide a preventive method for the progress of neuropsychiatric disorders, a therapeutic agent for neuropsychiatric disorders, a screening method thereof, and a therapeutic method through the analysis of the mechanisms leading to neuropsychiatric disorders such as Nasu-Hakola diseases and the like. The non-human animal model of oligodendrocytes developmental disorders was generated by making the DAP12 gene function deficient on its chromosome. The DAP12 knockout mouse develops myelination disorders including hypomyelinosis in the brain, particularly in the frontal head and the thalamus, further leading to neuropsychiatric disorders such as Nasu-Hakola disease and the like with aging.
    Type: Application
    Filed: November 13, 2003
    Publication date: September 22, 2005
    Inventors: Toshiyuki Takai, Hiroaki Aso, Michihiro Fujiwara
  • Patent number: 4955944
    Abstract: An armature core 55 and field cores 53 of a vehicle starter/generator are directly mounted on the engine cylinder block, 57, and are cooled by the fluid circulating an coolant passageways 58-62 in the block. Heat pipes 76, 77 arranged on the armature core and/or the field cores may be inserted in the coolant passageways in the cylinder block, and a clutch 69 may be disposed between revolving-field poles 52 mounted on the engine crankshaft 50 and a transmission drive shaft 63.
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: September 11, 1990
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiroaki Aso, Yutaka Kitamura
  • Patent number: 4918830
    Abstract: A permanent magnet DC machine is prepared by attaching auxiliary magnetic poles having higher reversible permeability than that of main magnetic poles constituted by anisotropic permanent magnets which are to be attached to the inner circumferential surface of a yoke by welding;arranging a non-magnetic substance having a triangular shape in cross section to a side surface of each of the auxiliary magnetic poles and the inner circumferential surface of the yoke so as to form a leakage magnetic path breaking section at the radially outer part of each of the non-magnetic substances so that the length of the leakage magnetic path breaking section is greater than the air gap formed between a rotor and a stator; positioning the main magnetic poles of anistropic permanent magnets with respect to the other side surface of each of the non-magnetic substances and the inner circumferential surface of the yoke; and fixing main magnetic poles by an adhesive agent or by inserting forcibly a plate spring in a channel form i
    Type: Grant
    Filed: March 21, 1989
    Date of Patent: April 24, 1990
    Inventor: Hiroaki Aso
  • Patent number: 4918323
    Abstract: A field core and an armature core are directly mounted on a cylinder block, and a clutch plate frictionally connected with a clutch disc is mounted through a cushioning material to a revolving-field poles mounted on the engine crankshaft, so that a space will be provided between the clutch plate at this frictionally connected area and the revolving-field poles, thereby insulating by the space the frictional heat at the clutch plate connection area caused by clutch connection and disconnection, thus restraining temperature rise of the revolving-field poles, and preventing deformation and damage of the revolving-field poles. The cushioning material has an effect to absorb various types of vibrations occurring with connection and disconnection between the clutch plate and the clutch disc.
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: April 17, 1990
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Hiroaki Aso
  • Patent number: 4914334
    Abstract: A permanent magnet DC machine comprising a rotor and a stator diametrically opposed to the rotor through a fine air gap therebetween. The stator comprises a yoke, main magnetic poles of anisotropic permanent magnet provided on an inner circumferential surface of the yoke and auxiliary magnetic poles provided respectively adjacent to the main magnetic poles side by side, each of the auxiliary magnetic pole being made of a material having higher reversible permeability than said permanent magnet. Each pair of the main and auxiliary magnetic poles are arranged so that they are in contact with each other at a radially inner portion of the magnetic poles and are separated from each other at a radially outer side of the magnetic poles to thereby form a magnetic leakage-path breaking air gap portion therebetween.
    Type: Grant
    Filed: March 23, 1989
    Date of Patent: April 3, 1990
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Hiroaki Aso
  • Patent number: 4870307
    Abstract: An ac generator for a vehicle comprises a rotor field core fixed on a rotary shaft and magnetized by a field coil, a stator armature core surrounding the rotor field core, a stator armature coil wound on the stator armature core, an enclosure for liquid-tightly covering the stator armature coil, a generally cylindrical front bracket and a rear bracket. The front and the rear brackets are mounted directly to the cylinder block of the engine for defining a coolant passage between the front bracket, an outer wall of the rear bracket and an outer surface of the enclosure, the coolant passage having an inlet port connected to a upstream portion of an engine coolant passage and an outlet port connected to a downstream portion of the engine coolant passage, so that a portion of engine coolant flows through the coolant passage to cool at least the stator armature coil and the stator armature core.
    Type: Grant
    Filed: April 13, 1988
    Date of Patent: September 26, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yutaka Kitamura, Hiroaki Aso
  • Patent number: 4864974
    Abstract: A cooling apparatus for electrical accessories such as a generator and a starter motor for a car comprises a cooling liquid conduit for feeding a part of a cooling liquid for cooling an engine to a starter motor for starting the engine, and/or an A.C. generator and having at least one sensor for detecting the temperature of the cooling liquid and at least one valve provided in the cooling liquid conduit so that opening and closing operations are controlled on the basis of an output from the sensor.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: September 12, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Hiroaki Aso
  • Patent number: 4818906
    Abstract: A belt driven vehicle alternator is enclosed by front and rear brackets/casing members 26, 30 which, in combination with an aluminum housing 24 surrounding the rotor and stator cores/coils, define flow passages for a liquid coolant branched off from the engine cooling system. The coolant inlet and outlet ports 28, 29 are both provided in the rear casing member 30 and are circumferentially proximate each other to minimize the space occupied by the alternator cooling system and tubes in the crowded engine compartment.
    Type: Grant
    Filed: April 7, 1987
    Date of Patent: April 4, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yutaka Kitamura, Hiroaki Aso
  • Patent number: 4776225
    Abstract: A planetary gear system for the speed reduction output of a starter motor. The internal gear is made of an elastic resin and is separated from the casing of the system or a metal ring fitted in the casing by a predetermined gap. Thereby, the internal ring can deform over a range of shocks but is prevented from deforming by the casing or metal ring above this shock range.
    Type: Grant
    Filed: February 19, 1987
    Date of Patent: October 11, 1988
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Akira Morishita, Hiroaki Aso
  • Patent number: 4765283
    Abstract: A cooling device for cooling a vehicle mounted generator by using an engine coolant of the vehicle includes a temperature sensor 13 for sensing the temperature of the engine coolant, an electromagnetic valve 9 and a control device 14 responsive to the output of the temperature sensor to on-off control the valve such that when the output of the sensor is higher than an upper reference value preset in the control device or lower than a lower reference value preset therein, the valve is closed.
    Type: Grant
    Filed: March 10, 1987
    Date of Patent: August 23, 1988
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yutaka Kitamura, Hiroaki Aso
  • Patent number: 4739204
    Abstract: A vehicle mounted a.c. generator includes an annular water coolant passage 32b around a stator coil 11 and a branch coolant passage 32c extending from an inlet portion of the annular coolant passage to a return portion thereof. An air circulation fan 60 may also be provided inside a front bracket 26 of the generator. Various embodiments include supplemental heat pipes and bearing coolant passages.
    Type: Grant
    Filed: January 5, 1987
    Date of Patent: April 19, 1988
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yutaka Kitamura, Kazutoshi Kaneyuki, Yoshiyuki Iwaki, Hiroaki Aso