Patents by Inventor Koichi Ojima

Koichi Ojima 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: 20160118858
    Abstract: In the rotary electric machine according to the present invention, a first O-ring 13a is mounted between a pair of position regulating members 12 that are press-fitted onto and held in a vicinity of a second axial end of an outer circumferential surface of a stator core housing portion 10a so as to be spaced apart in an axial direction, and is pressed and held between the stator core housing portion 10a and a cylindrical portion 16, and a second O-ring 13b is mounted into an O-ring housing groove 11 that is recessed into an outer circumferential surface of a frame mounting portion 10b, and is pressed and held between the frame mounting portion 10b and the cylindrical portion 16, such that a coolant channel 22 is formed between the frame 10 and the cylindrical portion 16.
    Type: Application
    Filed: June 14, 2013
    Publication date: April 28, 2016
    Applicant: Mitsubishi Electric Corporation
    Inventors: Koichi OJIMA, Naoki OHASHI
  • Patent number: 9300174
    Abstract: The objective is to prevent the flange of a ring member for holding the stator core from enlarging the diameter of a rotating electric machine and to eliminate a screwing space and a pedestal portion in the housing case so as to suppress the weight of the rotating electric machine from increasing; one end of the ring member for holding the stator core protrudes from the outer circumference of the stator core toward the rotation axle and the ring member is fixed to the cover or the housing case at the protruding portion.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: March 29, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Naoki Ohashi, Koichi Ojima
  • Publication number: 20150318754
    Abstract: It is an object of the present invention, to provide a rotor-holding structure of a rotating electrical machine for hybrid-vehicle, the structure being capable of ensuring a space is present between a stator and a rotor. A rotating electrical machine includes a stator and a rotor, the stator being fixed to a housing, and the rotor being disposed opposite to stator across a predetermined space, wherein the rotor has a rotor boss section, a rotor core, and a permanent magnet. The rotor boss section is rotatably attached to the housing through a bearing. The rotor core and the permanent. magnet are attached to the rotor boss section. Multiple through-holes are provided at the respective corresponding locations of the housing and the rotor boss section. A supporting member is passed through each of the through-holes, thereby holding the rotor boss section.
    Type: Application
    Filed: April 15, 2013
    Publication date: November 5, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Ken NISHIKAWA, Masaya INOUE, Koichi OJIMA
  • Publication number: 20150256052
    Abstract: Provided is an armature for a rotating electrical machine, which is capable of improving heat dissipation performance of an edgewise coil to enhance efficiency of the rotating electrical machine. The armature for a rotating electrical machine includes: a core including a yoke section and a tooth section that protrudes from the yoke section; an edgewise coil to be inserted onto the tooth section through intermediation of an insulating member, the edgewise coil being formed by winding a rectangular wire having a rectangular conductor cross-section through edgewise bending; and a heat transfer member filled into a gap between the tooth section and the edgewise coil. The armature has different gaps formed at two regions between the tooth section and a long side of the edgewise coil.
    Type: Application
    Filed: September 12, 2012
    Publication date: September 10, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shinichiro Yoshida, Shuichi Tamura, Masaya Inoue, Akihiro Yamamura, Koichi Ojima, Shogo Okamoto, Yutaro Shirai
  • Publication number: 20150108877
    Abstract: A rotary electric machine includes: a stator around which a coil is wound; a frame which fixes the stator; a rotor which faces the stator via a slight air gap; a shaft which is fixed to the rotor and is rotatably and removably supported via a bearing; and a bracket which supports the bearing inside a bearing box. The rotary electric machine includes: an insulating member which is mounted inside the bearing box of the bracket; a metal holder which is mounted inside the insulating member with a predetermined clearance with respect to an outer ring of the bearing, and supports the bearing; and a pressing body which is mounted between the side surface of the metal holder and the side surface of the outer ring of the bearing.
    Type: Application
    Filed: March 21, 2014
    Publication date: April 23, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Soichi SATO, Masaya INOUE, Koichi OJIMA, Keigo MAEDA
  • Publication number: 20150076940
    Abstract: The rotary electric machine includes: a stator that includes: a stator core; and a stator coil; a ring member that accommodates the stator so as to hold the stator core in an internally fitted state; a housing case formed into a floored cylindrical shape with an opening at a first end portion, and that accommodates the ring member and the stator; and a cover mounted onto the first end portion of the housing case so as to cover the opening of the housing case, wherein a first end portion of each of the ring member and the housing case is fixed by fastening to the cover such that a fastening direction of each is oriented in an axial direction, and a second end portion of the ring member is fitted into and held by the housing case by means of an interfitting member.
    Type: Application
    Filed: May 2, 2012
    Publication date: March 19, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Naoki Ohashi, Masaya Inoue, Koichi Ojima, Kazuyuki Iwamoto
  • Publication number: 20140300245
    Abstract: The objective is to prevent the flange of a ring member for holding the stator core from enlarging the diameter of a rotating electric machine and to eliminate a screwing space and a pedestal portion in the housing case so as to suppress the weight of the rotating electric machine from increasing; one end of the ring member for holding the stator core protrudes from the outer circumference of the stator core toward the rotation axle and the ring member is fixed to the cover or the housing case at the protruding portion.
    Type: Application
    Filed: August 29, 2013
    Publication date: October 9, 2014
    Applicant: Mitsubishi Electric Corporation
    Inventors: Naoki OHASHI, Koichi OJIMA
  • Patent number: 4842984
    Abstract: A novel photosensitive resin composition, which has fairly high sensitivity to light and developable with water comprising of essential components a resin represented by the general formula (I), ##STR1## wherein X, which may be present or absent, represents acetic acid when present, Y stands for a group containing carbon-carbon double bond(s) represented by the formula (II), ##STR2## n is an integer of 10 or greater, more than 0 and less than 1, and t is 0 or 1, and a sodium or potassium salt of 4,4'-diazidostilbene-2,2'-disulfonic acid represented by the general formula (IV), ##STR3## wherein z stands for sodium atom or potassium atom; or the resin represented by the general formula (I), the sodium or potassium salt of 4,4'-diazidostilbene-2,2'-disulfonic acid represented by the general formula (IV), and an aromatic ketone represented by the general formula (V), ##STR4## wherein G stands for hydrogen atom or an amino group or dialkylamino group represented by the general formula (VI), ##STR5## where u is 0,
    Type: Grant
    Filed: June 29, 1987
    Date of Patent: June 27, 1989
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Hajime Serizawa, Koichi Ojima, Kiyoshi Shimizu
  • Patent number: 4778725
    Abstract: A functional resin derived from a polyallylamine or polyvinylamine and having unsaturated C.dbd.C bonds such as allyl groups at terminals of side chains has good coating properties and strong adhesiveness to a substrate, thus can be used as protective films for various substrates, coating compositions and adhesives.
    Type: Grant
    Filed: April 27, 1987
    Date of Patent: October 18, 1988
    Assignee: Nitto Boseki Co., Ltd.
    Inventors: Hajime Serizawa, Koichi Ojima, Keizo Ogihara, Kiyoshi Shimizu