Patents by Inventor Masao Akiyoshi

Masao Akiyoshi 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: 10491081
    Abstract: In the present rectifying apparatus, a circuit board is disposed between a first rectifying element holding portion and a second rectifying element holding portion, and is configured such that only a housing linking portion, a stator winding connecting portion, and a voltage regulator connecting portion protrude from the first rectifying element holding portion and the second rectifying element holding portion when viewed from an axial direction, a plurality of first radially inner fins are formed on a radially inner side of the first rectifying element holding portion, and a plurality of second radially outer fins are formed on a radially outer side of the second rectifying element holding portion.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: November 26, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masao Akiyoshi, Yuzuru Kobayashi
  • Patent number: 10374493
    Abstract: A configuration of a rectifying device configuring a vehicle-use rotating electric machine is such that when a lead drawn out from a stator winding is inserted into a through hole of a rear bracket forming a casing, a periphery of the lead is enclosed, and the through hole sealed, by a tubular member extended from a main body portion of a terminal block, and the through hole not blocked by the tubular member is sealed by a stopper portion extended in the same way from a main body portion of the terminal block. Even when the number of leads drawn out is reduced, standardization of the rear bracket is carried out by the through hole (3a) of the rear bracket being sealed by the stopper portion.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: August 6, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuzuru Kobayashi, Masao Akiyoshi, Kazunori Tanaka
  • Patent number: 10199908
    Abstract: In this rectifying apparatus, a circuit board is disposed between a first rectifying element holding portion and a second rectifying element holding portion such that first rectifying element connecting portions are disposed in a loosely fitted state inside a second penetrating aperture that is formed on the second rectifying element holding portion, and second rectifying element connecting portions are disposed in a loosely fitted state inside a first penetrating aperture that is formed on the first rectifying element holding portion; first leading electrodes of a plurality of first rectifying elements respectively extend axially and are connected to each of the first rectifying element connecting portions; and second leading electrodes of a plurality of second rectifying elements respectively extend axially and are connected to each of the second rectifying element connecting portions.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: February 5, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masao Akiyoshi, Yuzuru Kobayashi, Kyoko Higashino
  • Publication number: 20190020243
    Abstract: Radial direction outer side sizes of a first rectifying unit, a circuit board, and a second rectifying unit configuring a rectifying device are disposed so as to be sequentially smaller in a direction away from a frame of a rotating electrical machine main body, and at predetermined intervals, a cover covering the rectifying device has a cover end wall portion, a cover outer wall portion, and a cover intermediate portion, an inner peripheral side inlet portion is formed in the cover end wall portion, an outer peripheral side inlet portion is formed in the cover intermediate portion, and the outer peripheral side inlet portion is formed of an axial direction covering portion, and a radial direction covering portion that connects the axial direction covering portion and an outer peripheral portion of the cover end wall portion.
    Type: Application
    Filed: April 7, 2016
    Publication date: January 17, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masao AKIYOSHI, Yuzuru KOBAYASHI
  • Patent number: 10113816
    Abstract: An air-conditioning apparatus includes a casing having an air inlet and an air outlet and having therein an air passage, and a heat exchanger and an air-sending fan which are arranged in the air passage in the casing. The air passage is divided into a plurality of air passage sections by, for example, a partition. The air-conditioning apparatus can reduce pressure loss in an indoor unit.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: October 30, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masao Akiyoshi, Satoshi Michihata, Shoji Yamada, Tomoya Fukui
  • Publication number: 20180183297
    Abstract: In the vehicular AC power generator of the present invention, a part where the blade pitch is narrow and a part where the blade pitch is wide are provided in the circumferential direction on a fan fixed in an annular shape to a pole core. In the narrow-pitch part, two or more blade portions are provided in contact with each of the end surfaces of the two or more adjacent claw magnetic poles. This configuration can suppress deformation of the blade portions caused by rotation and can suppress increase in noise occurring from the fan.
    Type: Application
    Filed: September 15, 2015
    Publication date: June 28, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masao AKIYOSHI, Shinichiro MINAMI, Kentaro HONSHO
  • Patent number: 9982898
    Abstract: An indoor unit includes a casing having a suction port formed in an upper part and a blow-out port formed on a lower side at a front face part, an axial-flow or diagonal-flow fan provided on the downstream side of the suction port in the casing, and a heat exchanger provided on the downstream side of the fan and on the upstream side of the blow-out port in the casing, in which air blown out of the fan and refrigerant are heat-exchanged.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: May 29, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shoji Yamada, Kenichi Sakoda, Masao Akiyoshi, Akira Takamori, Nobuaki Uehara, Tomoya Fukui, Seiji Nakashima, Naoki Iwamoto, Satoshi Michihata, Isao Otsuka, Masayuki Tsuji
  • Publication number: 20180115214
    Abstract: A cover covering a rectifying device includes a cover end wall portion, a cover outer wall portion, and a cover intermediate portion interposed between the cover end wall portion and the cover outer wall portion. The cover end wall portion includes an inner peripheral side intake portion, and the cover intermediate portion includes an outer peripheral side intake portion. The outer peripheral side intake portion includes an axial direction covering portion existing in a position that is closer to a rotary electric machine main body than the cover end wall portion in an axial direction, and a radial direction covering portion that connects the axial direction covering portion to an outer peripheral portion of the cover end wall portion. Intake holes are provided respectively in the inner peripheral side intake portion, the axial direction covering portion, and the radial direction covering portion.
    Type: Application
    Filed: April 28, 2015
    Publication date: April 26, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masao AKIYOSHI, Yuzuru KOBAYASHI, Kentaro HONSHO
  • Publication number: 20170358972
    Abstract: A rotor of a vehicle AC generator according to the present invention is the rotor of the vehicle AC generator which includes: magnetic pole cores; a field coil wound around the magnetic pole cores; and cooling fans fixed to the magnetic pole cores. In the rotor of the vehicle AC generator, each cooling fan includes: a base portion fixed to the axial end surfaces of the magnetic pole cores; a plurality of blade portions which are each axially arranged in a standing condition from the base portion; and a base rib which is provided in the base portion at a position apart from each root portion of the plurality of the blade portions and arranged in parallel to the extending direction of the blade portion.
    Type: Application
    Filed: May 27, 2015
    Publication date: December 14, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Shiro IIZUKA, Masao AKIYOSHI
  • Publication number: 20170324306
    Abstract: In this rectifying apparatus, a circuit board is disposed between a first rectifying element holding portion and a second rectifying element holding portion such that first rectifying element connecting portions are disposed in a loosely fitted state inside a second penetrating aperture that is formed on the second rectifying element holding portion, and second rectifying element connecting portions are disposed in a loosely fitted state inside a first penetrating aperture that is formed on the first rectifying element holding portion; first leading electrodes of a plurality of first rectifying elements respectively extend axially and are connected to each of the first rectifying element connecting portions; and second leading electrodes of a plurality of second rectifying elements respectively extend axially and are connected to each of the second rectifying element connecting portions.
    Type: Application
    Filed: November 21, 2014
    Publication date: November 9, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masao AKIYOSHI, Yuzuru KOBAYASHI, Kyoko HIGASHINO
  • Publication number: 20170302136
    Abstract: A circuit board has first rectifying element connecting portions and second rectifying element connecting portions, and is disposed between a first rectifying element holding portion and a second rectifying element holding portion, a plurality of first rectifying elements are each held by the first rectifying element holding portion, and are connected to the first rectifying element connecting portions by extending a first leading electrode axially, a plurality of second rectifying elements are each held by the second rectifying element holding portion, and are connected to the second rectifying element connecting portion by extending a second leading electrode axially, and a radial ventilation channel that passes through the rectifying apparatus in a radial direction is configured by disposing the circuit board so as to be spaced apart from at least one of the first rectifying element holding portion and the second rectifying element holding portion in an axial direction.
    Type: Application
    Filed: November 21, 2014
    Publication date: October 19, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masao AKIYOSHI, Yuzuru KOBAYASHI
  • Publication number: 20170294823
    Abstract: In the present rectifying apparatus, a circuit board is disposed between a first rectifying element holding portion and a second rectifying element holding portion, and is configured such that only a housing linking portion, a stator winding connecting portion, and a voltage regulator connecting portion protrude from the first rectifying element holding portion and the second rectifying element holding portion when viewed from an axial direction, a plurality of first radially inner fins are formed on a radially inner side of the first rectifying element holding portion, and a plurality of second radially outer fins are formed on a radially outer side of the second rectifying element holding portion.
    Type: Application
    Filed: November 21, 2014
    Publication date: October 12, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masao AKIYOSHI, Yuzuru KOBAYASHI
  • Publication number: 20170222522
    Abstract: A configuration of a rectifying device configuring a vehicle-use rotating electric machine is such that when a lead drawn out from a stator winding is inserted into a through hole of a rear bracket forming a casing, a periphery of the lead is enclosed, and the through hole sealed, by a tubular member extended from a main body portion of a terminal block, and the through hole not blocked by the tubular member is sealed by a stopper portion extended in the same way from a main body portion of the terminal block. Even when the number of leads drawn out is reduced, standardization of the rear bracket is carried out by the through hole (3a) of the rear bracket being sealed by the stopper portion.
    Type: Application
    Filed: October 21, 2014
    Publication date: August 3, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yuzuru KOBAYASHI, Masao AKIYOSHI, Kazunori TANAKA
  • Patent number: 9660503
    Abstract: A cooling device mounted in the interior of a frame of a rotating electric machine is configured in such a manner that at least one of the end-face portions between a first end-face portion through which a cooling fluid flows into the cooling device and a second end-face portion from which the cooling fluid flows out thereof is placed tilting with respect to a minimum-width's direction of a frame's internal flow-path in vicinity to the cooling device, or with respect to at least one of an inflow direction and outflow direction of the cooling fluid.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: May 23, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kiyonori Koga, Masao Akiyoshi
  • Patent number: 9660504
    Abstract: A cooling device mounted in a flow path formed by an internal space of a cooling fluid duct being mounted on the periphery of a frame of a rotating electric machine is configured in such a manner that at least one of the end-face portions between a first end-face portion through which a cooling fluid flows into the cooling device and a second end-face portion from which the cooling fluid flows out thereof is placed tilting with respect to at least one of a first orthogonal surface perpendicular to an inflow direction of the cooling fluid and a second orthogonal surface perpendicular to an outflow direction of the cooling fluid, or with respect to a flow-path-width's direction perpendicular to a direction in which an axis line of a stator extends.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: May 23, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kiyonori Koga, Masao Akiyoshi
  • Patent number: 9479028
    Abstract: An automotive rotary electric machine has a cooling fan including a flat ring-shaped mounting base plate fixed to a rotor, and a plurality of fan blades arranged in a row circumferentially such that each stands on a surface of the mounting base plate, the fan blades having an S-shaped cross-sectional shape that displaces gradually forward in a direction of rotation from a trailing edge that is an outer circumferential edge toward a leading edge that is an inner circumferential edge, and in which an arc shape near the trailing edge that is convex forward in the direction of rotation and an arc shape near the leading edge that is convex rearward in the direction of rotation are connected smoothly.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: October 25, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masao Akiyoshi, Yuzuru Kobayashi, Kazunori Tanaka, Yoshihiro Shinosaka, Yoshiro Imazawa
  • Patent number: 9413207
    Abstract: A vehicle AC generator capable of enhancing a cooling effect by increasing an air volume of cooling air is obtained. The AC generator includes: a casing having a ventilation port on an outer periphery; a stator installed in the casing; a rotor supported in the stator in a rotatable manner; a fan installed oppositely to the ventilation port in the casing and rotated integrally with the rotor; and a protrusion formed on a surface of the casing opposing a tip end of the fan at a position adjacent to an outer periphery of the ventilation port of the casing.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: August 9, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masao Akiyoshi, Kazuya Hasegawa, Atsushi Ohashi, Kazunori Tanaka
  • Patent number: D795807
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: August 29, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshihiro Shinosaka, Masao Akiyoshi, Shinichiro Minami, Yuzuru Kobayashi
  • Patent number: D820785
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: June 19, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshihiro Shinosaka, Masao Akiyoshi, Shinichiro Minami, Yuzuru Kobayashi, Kentaro Honsho
  • Patent number: D823252
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: July 17, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshihiro Shinosaka, Masao Akiyoshi, Shinichiro Minami, Yuzuru Kobayashi, Kentaro Honsho