Patents by Inventor Hitoshi Shirakura

Hitoshi Shirakura 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).

  • Motor and blower fan using same
    Patent number: 6943471
    Abstract: This motor comprises a core, a drive coil wound on the core, a housing, and a stator having an insulator for insulating the drive coil formed one-piece with the housing. Further, the motor comprises a stator casing for encasing the stator, and a rotor disposed outside the stator. Inside the housing is disposed a bearing for supporting the rotary shaft of the rotor, and an oil retainer disposed so as to partially come in contact with the bearing is stored in a storing section provided in either one of the housing and the stator casing.
    Type: Grant
    Filed: June 22, 2004
    Date of Patent: September 13, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shokichi Toyokawa, Toshifumi Tsutsumi, Katsuaki Abe, Yukio Oishi, Hitoshi Shirakura
  • Motor and blower fan using same
    Publication number: 20040256933
    Abstract: This motor comprises a core, a drive coil wound on the core, a housing, and a stator having an insulator for insulating the drive coil formed one-piece with the housing. Further, the motor comprises a stator casing for encasing the stator, and a rotor disposed outside the stator. Inside the housing is disposed a bearing for supporting the rotary shaft of the rotor, and an oil retainer disposed so as to partially come in contact with the bearing is stored in a storing section provided in either one of the housing and the stator casing.
    Type: Application
    Filed: June 22, 2004
    Publication date: December 23, 2004
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD
    Inventors: Shokichi Toyokawa, Toshifumi Tsutsumi, Katsuaki Abe, Yukio Oishi, Hitoshi Shirakura