Patents by Inventor Naoto Yamaoka

Naoto Yamaoka 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: 8256258
    Abstract: A heat sink has a plurality of radially extending radiating fins, which are arranged annularly on the outer circumferential surface of a cylindrical base to be integral with that surface. The base is formed to have a cylindrical shape having a center axis. The base is formed to be solid-core. The heat sink is ground such that a cooling object contact portion having a generally cylindrical shape projects from the end surface of the heat sink in the axial direction. An annular groove is ground out along the outer circumference of a contact surface of the cooling object contact portion. An attaching member is attached on the outer circumferential surface of the cooling object contact portion, and a pressure application portion is entirely pressed by a pressing machine. The pressure application portion is plastically deformed outward in the diameter direction, so that the attaching member is fixed in between.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: September 4, 2012
    Assignee: Nidec Corporation
    Inventors: Naoto Yamaoka, Takamasa Yamashita
  • Patent number: 7498704
    Abstract: A motor includes a rotor and a stator. A shaft of the rotor is received in a sleeve. A face of the sleeve and a face of the shaft, that are opposed to each other, form a bearing supporting the rotor in a rotatable manner relative to the stator. A sleeve-retaining portion that retains the sleeve has a bottom portion opposed to an axial end of the sleeve. A magnet holder is arranged in the bottom portion to accommodate an attracting magnet magnetically attracting the axial end of the shaft. The magnet holder is held between the axial end of the sleeve and the bottom portion of the sleeve-retaining portion.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: March 3, 2009
    Assignee: Nidec Corporation
    Inventors: Takaya Otsuki, Masahiro Ishikawa, Takamasa Yamashita, Naoto Yamaoka, Yuji Yabuuchi, Kazuhiro Inouchi, Makoto Fujihara
  • Patent number: 7499280
    Abstract: A heat dissipating device which dissipates heat generated by a heat generating object mounted on a base includes a heat sink body, a heat-conducting area, a tip portion, an inclined surface, and a fastener. The heat-conducting area includes the tip portion, which is a substantially middle portion of the heat-conducting area and is arranged substantially closest to the heat generating object among the other areas of the heat-conducting area, and the inclined surface which is a part of the heat-conducting area and inclines outwardly from the tip portion such that a distance between the inclined surface and the heat generating object gradually increases. The fastener includes an attaching portion to mount the heat dissipating device to the base, and the attaching portion is arranged substantially radially outside of an outer peripheral portion of the heat generating object. When the attaching portion is secured to the base, the tip portion of the heat-conducting area is pressed to the heat generating object.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: March 3, 2009
    Assignee: Nidec Corporation
    Inventors: Takaya Otsuki, Naoto Yamaoka
  • Publication number: 20080223558
    Abstract: A cooling device includes a fan, a heat sink, and an attaching portion arranged to attach the fan to the heat sink. The fan includes an impeller rotating about a center axis, a motor arranged to rotate the impeller, and a base portion supporting the motor. The attaching portion includes a frame surrounding a portion of the impeller opposed to the heat sink, a plurality of supports projecting from the frame to a side opposite to the heat sink, and a plurality of supporting ribs connecting the supports and the base portion to each other, arranged about the center axis, and extending from the base portion away from the center axis. Each supporting rib has a first primary surface and a second primary surface arranged opposite to the impeller. The first and second primary surfaces are inclined with respect to a plane substantially perpendicular to the center axis.
    Type: Application
    Filed: March 12, 2008
    Publication date: September 18, 2008
    Applicant: NIDEC CORPORATION
    Inventors: Takaya OTSUKI, Kazuhiro INOUCHI, Takamasa YAMASHITA, Makoto FUJIHARA, Yoshinori INOUE, Naoto YAMAOKA, Tatsuya AKASE, Akira HIRAKAWA
  • Publication number: 20080223551
    Abstract: In a manufacturing method of a fin unit for a heat sink for dissipating a heat from a heat source, the fin unit includes a plurality of fins radially arranged about its center axis, and a fin supporting portion connecting inner ends of the fins and supporting the fins. First, metal is heated. The heated metal is extruded and/or drawn through a die to obtain a metal body. One of the die and the metal body obtained through the die is rotated relative to the other about a center axis of a die hole of the die. The metal body is then cut, thereby obtaining the fin unit.
    Type: Application
    Filed: March 12, 2008
    Publication date: September 18, 2008
    Applicant: NIDEC CORPORATION
    Inventors: Takaya OTSUKI, Kazuhiro INOUCHI, Takamasa YAMASHITA, Makoto FUJIHARA, Yoshinori INOUE, Naoto YAMAOKA, Tatsuya AKASE, Akira HIRAKAWA
  • Publication number: 20080180912
    Abstract: A heat sink has a plurality of radially extending radiating fins, which are arranged annularly on the outer circumferential surface of a cylindrical base to be integral with that surface. The base is formed to have a cylindrical shape having a center axis. The base is formed to be solid-core. The heat sink is ground such that a cooling object contact portion having a generally cylindrical shape projects from the end surface of the heat sink in the axial direction. An annular groove is ground out along the outer circumference of a contact surface of the cooling object contact portion. An attaching member is attached on the outer circumferential surface of the cooling object contact portion, and a pressure application portion is entirely pressed by a pressing machine. The pressure application portion is plastically deformed outward in the diameter direction, so that the attaching member is fixed in between.
    Type: Application
    Filed: January 15, 2008
    Publication date: July 31, 2008
    Applicant: NIDEC CORPORATION
    Inventors: Naoto Yamaoka, Takamasa Yamashita
  • Publication number: 20070176504
    Abstract: A motor includes a rotor and a stator. A shaft of the rotor is received in a sleeve. A face of the sleeve and a face of the shaft, that are opposed to each other, form a bearing supporting the rotor in a rotatable manner relative to the stator. A sleeve-retaining portion that retains the sleeve has a bottom portion opposed to an axial end of the sleeve. A magnet holder is arranged in the bottom portion to accommodate an attracting magnet magnetically attracting the axial end of the shaft. The magnet holder is held between the axial end of the sleeve and the bottom portion of the sleeve-retaining portion.
    Type: Application
    Filed: February 2, 2007
    Publication date: August 2, 2007
    Applicant: NIDEC CORPORATION
    Inventors: Takaya Otsuki, Masahiro Ishikawa, Takamasa Yamashita, Naoto Yamaoka, Yuji Yabuuchi, Kazuhiro Inouchi, Makoto Fujihara
  • Publication number: 20070147002
    Abstract: A heat dissipating device which dissipates heat generated by a heat generating object mounted on a base includes a heat sink body, a heat-conducting area, a tip portion, an inclined surface, and a fastener. The heat-conducting area includes the tip portion, which is a substantially middle portion of the heat-conducting area and is arranged substantially closest to the heat generating object among the other areas of the heat-conducting area, and the inclined surface which is a part of the heat-conducting area and inclines outwardly from the tip portion such that a distance between the inclined surface and the heat generating object gradually increases. The fastener includes an attaching portion to mount the heat dissipating device to the base, and the attaching portion is arranged substantially radially outside of an outer peripheral portion of the heat generating object. When the attaching portion is secured to the base, the tip portion of the heat-conducting area is pressed to the heat generating object.
    Type: Application
    Filed: December 28, 2006
    Publication date: June 28, 2007
    Applicant: NIDEC CORPORATION
    Inventors: Takaya OTSUKI, Naoto YAMAOKA
  • Publication number: 20040148970
    Abstract: In a drum type washing machine according to the present invention, an electrolytic device 60 for electrolyzing water stored in an outer tub 2 is attached to an outer peripheral surface wall 21 of the outer tub 2. The water stored in the outer tub 2 flows into an electrolytic tub 62 through an inlet tube 64A and a connection tube 63A, and is electrolyzed by a plurality of electrode plates 61, after which it is returned to the outer tub 2 through a connection tube 63B and an outlet tube 64B. The electrolyzed water contains active oxygen (O2−), hypochlorous acid (HClO), etc. having a sterilizing effect. Accordingly, the detergency is improved.
    Type: Application
    Filed: February 4, 2003
    Publication date: August 5, 2004
    Inventors: Kenji Nakagawa, Tamotsu Kawamura, Satoshi Nakamura, Takashi Fukui, Yorihisa Funada, Harumi Takeuchi, Yuji Eifuku, Naoto Yamaoka
  • Publication number: 20020104122
    Abstract: This invention relates to a method for producing a plant with enhanced resistance to a pathogenic fungus, comprising transforming a plant with an expression vector comprising a DNA encoding a glucan elicitor receptor operably linked to a heterologous promoter, selecting a plant which has said DNA incorporated into a chromosome of said plant and which expresses said DNA, and recovering the selected plant. This invention also relates to a method for producing a progeny plant with resistance to a pathogenic fungus from said plant.
    Type: Application
    Filed: March 26, 2001
    Publication date: August 1, 2002
    Applicant: KIRIN BEER KABUSHIKI KAISHA
    Inventors: Makoto Kakitani, Naoyuki Umemoto, Isao Ishida, Akihiro Iwamatsu, Masaaki Yoshikawa, Naoto Yamaoka, Youji Takeuchi, Kuniko Yoshikawa, Masashi Yoshikawa
  • Patent number: 6225531
    Abstract: A glucan elicitor receptor having an amino acid sequence as substantially shown in SEQ ID NO:1; DNA molecules containing nucleotide sequences coding for a glucan elicitor receptor having an amino acid sequence as substantially shown in SEQ ID NO:1, or fragments thereof; DNA molecules containing nucleotide sequences coding for a glucan elicitor receptor, which are incorporated in plasmid pER23-1, or fragments thereof; vectors containing the DNA molecules or fragments thereof; plant cells transformed with the DNA molecules or fragments thereof; a method for creating a plant having resistance to pathogenic fungi comprising incorporating the DNA sequence coding for a glucan elicitor receptor, or fragment thereof into a chromosome of a plant and expressing the gene in the plant; a plant having resistance to pathogenic fungi, the plant having the DNA molecule containing a nucleotide sequence coding for a glucan elicitor receptor, or its fragment transferred thereinto and expressing the gene; and methods for using t
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: May 1, 2001
    Assignee: Kirin Beer Kabushiki Kaisha
    Inventors: Makoto Kakitani, Naoyuki Umemoto, Isao Ishida, Akihiro Iwamatsu, Masaaki Yoshikawa, Naoto Yamaoka
  • Patent number: D576567
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: September 9, 2008
    Assignee: Nidec Corporation
    Inventors: Takaya Otsuki, Takamasa Yamashita, Naoto Yamaoka