Patents by Inventor Ken-ichi Azuma

Ken-ichi Azuma 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: 6538548
    Abstract: The magnetic performance, rigidity and mechanical precision of an iron core assembly can be improved. A plurality of plate-shaped core segments are disposed in succession to form a plurality of first and second core members respectively. Edge portions of adjacent core segments of the first and second core members are coupled with each other. The first and second core members are alternately laminated one over another in such a manner that first inter-segment positions each defined between adjacent two first core segments of the first core member are offset from second inter-segment positions each defined between adjacent two second core segments of the second core member in a longitudinal direction of the first and second core members, with those edge portions of the respective first and second core segments which adjoin each other in a laminating direction in which the first and second core members are laminated being overlapped each other.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: March 25, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiroyuki Akita, Yuji Nakahara, Nobuaki Miyake, Ken-Ichi Azuma, Takashi Anamura
  • Publication number: 20020075121
    Abstract: The magnetic performance, rigidity and mechanical precision of an iron core assembly can be improved. A plurality of plate-shaped core segments are disposed in succession to form a plurality of first and second core members respectively. Edge portions of adjacent core segments of the first and second core members are coupled with each other. The first and second core members are alternately laminated one over another in such a manner that first inter-segment positions each defined between adjacent two first core segments of the first core member are offset from second inter-segment positions each defined between adjacent two second core segments of the second core member in a longitudinal direction of the first and second core members, with those edge portions of the respective first and second core segments which adjoin each other in a laminating direction in which the first and second core members are laminated being overlapped each other.
    Type: Application
    Filed: January 18, 2002
    Publication date: June 20, 2002
    Inventors: Hiroyuki Akita, Yuji Nakahara, Nobuaki Miyake, Ken-Ichi Azuma, Takashi Anamura
  • Patent number: 6369687
    Abstract: The magnetic performance, rigidity and mechanical precision of an iron core assembly can be improved. A plurality of plate-shaped core segments are disposed in succession to form a plurality of first and second core members respectively. Edge portions of adjacent core segments of the first and second core members are coupled with each other. The first and second core members are alternately laminated one over another in such a manner that first inter-segment positions each defined between adjacent two first core segments of the first core member are offset from second inter-segment positions each defined between adjacent two second core segments of the second core member in a longitudinal direction of the first and second core members, with those edge portions of the respective first and second core segments which adjoin each other in a laminating direction in which the first and second core members are laminated being overlapped each other.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: April 9, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiroyuki Akita, Yuji Nakahara, Nobuaki Miyake, Ken-Ichi Azuma, Takashi Anamura
  • Patent number: 6323571
    Abstract: An object of the present invention is to provide a low cost, high performance, thin structure rotary motor for driving medium used in magnetic disk drive unit, optical disk drive unit or the like, in order to improve the productivity of terminating processing and the reliability of the coils. Magnetic materials which are divided to a plurality of blocks or divided corresponding to respective magnetic pole teeth are connected by means of thin portions. The respective magnetic pole teeth are wound continuously with wire without cutting the wire at the positions in which the thin portions are connected. When a stator is assembled, a plurality of blocks or magnetic pole teeth are disposed on a substrate by separating or bending the thin portions.
    Type: Grant
    Filed: July 11, 2000
    Date of Patent: November 27, 2001
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yuji Nakahara, Ken-ichi Azuma, Masaru Matsumoto, Youichi Fujita, Satoru Akutsu, Akira Hashimoto, Yasunori Takai, Tadashi Hasegawa, Hiroshi Miyazaki, Junji Kawada
  • Patent number: 6167610
    Abstract: Magnetic materials which are divided into a plurality of blocks or divided corresponding to respective magnetic pole teeth are connected by means of thin portions. The respective magnetic pole teeth are wound continuously with wire without cutting the wire at the positions in which the thin portions are connected. When a stator is assembled, a plurality of blocks or magnetic pole teeth are disposed on a substrate by separating or bending the thin portions.
    Type: Grant
    Filed: January 3, 1996
    Date of Patent: January 2, 2001
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yuji Nakahara, Ken-ichi Azuma, Masaru Matsumoto, Youichi Fujita, Satoru Akutsu, Akira Hashimoto, Yasunori Takai, Tadashi Hasegawa, Hiroshi Miyazaki, Junji Kawada
  • Patent number: 6121711
    Abstract: An object of the present invention is to provide a low cost, high performance, thin structure rotary motor for driving medium used in magnetic disk drive unit, optical disk drive unit or the like, in order to improve the productivity of terminating processing and the reliability of the coils. Magnetic materials which are divided to a plurality of blocks or divided corresponding to respective magnetic pole teeth are connected by means of thin portions. The respective magnetic pole teeth are wound continuously with wire without cutting the wire at the positions in which the thin portions are connected. When a stator is assembled, a plurality of blocks or magnetic pole teeth are disposed on a substrate by separating or bending the thin portions.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: September 19, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yuji Nakahara, Ken-ichi Azuma, Masaru Matsumoto, Youichi Fujita, Satoru Akutsu, Akira Hashimoto, Yasunori Takai, Tadashi Hasegawa, Hiroshi Miyazaki, Junji Kawada
  • Patent number: 5859486
    Abstract: An object of the present invention is to provide a low cost, high performance, thin structure rotary motor for driving medium used in magnetic disk drive unit, optical disk drive unit or the like, in order to improve the productivity of terminating processing and the reliability of the coils. Magnetic materials which are divided to a plurality of blocks or divided corresponding to respective magnetic pole teeth are connected by means of thin portions. The respective magnetic pole teeth are wound continuously with wire without cutting the wire at the positions in which the thin portions are connected. When a stator is assembled, a plurality of blocks or magnetic pole teeth are disposed on a substrate by separating or bending the thin portions.
    Type: Grant
    Filed: November 1, 1994
    Date of Patent: January 12, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yuji Nakahara, Ken-ichi Azuma, Masaru Matsumoto, Youichi Fujita, Satoru Akutsu, Akira Hashimoto, Yasunori Takai, Tadashi Hasegawa, Hiroshi Miyazaki, Junji Kawada
  • Patent number: 5131240
    Abstract: An air conditioning apparatus includes a pipe unit in the form of a block-like member, the pipe unit comprising: control components, like a four port valve, a two port valve and a check valve, of the refrigerating cycle, which are incorporated in the block-like member; refrigerant passages which are formed in the block-like member to lead to the control components; and connecting ports which are formed in the block-like member to be connected to essential components, like a compressor, and an indoor and an outdoor heat exchanger, of the refrigerating cycle.
    Type: Grant
    Filed: June 27, 1991
    Date of Patent: July 21, 1992
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masao Kohashi, Ken-ichi Azuma, Kentaro Mori