Patents by Inventor Koichi Matsuoka

Koichi Matsuoka 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).

  • Totally enclosed type driving electric motor
    Patent number: 6774514
    Abstract: The invention relates to a totally enclosed type driving electric motor in which a stator core having a coil is attached to an inner peripheral portion of a frame, a bearing bracket supporting a bearing is attached to one end of the frame, a housing supporting a bearing is attached to another end of the frame, and a shaft of a rotor is rotatably supported by the first bearing and the second bearing. The totally enclosed type driving electric motor of the invention is provided with a cooling space near at least one of the first bearing and the second bearing.
    Type: Grant
    Filed: February 22, 2001
    Date of Patent: August 10, 2004
    Assignees: Kabushiki Kaisha Toshiba, Railway Technical Research Institute
    Inventors: Koichi Matsuoka, Minoru Kondo, Yasunari Terada, Takashi Nagayama, Katsuhiko Ibusuki, Nobuyuki Yagi, Tsutomu Kinoshita
  • Totally enclosed type driving electric motor
    Publication number: 20010017498
    Abstract: The invention relates to a totally enclosed type driving electric motor in which a stator core having a coil is attached to an inner peripheral portion of a frame, a bearing bracket supporting a bearing is attached to one end of the frame, a housing supporting a bearing is attached to another end of the frame, and a shaft of a rotor is rotatably supported by the first bearing and the second bearing. The totally enclosed type driving electric motor of the invention is provided with a cooling space near at least one of the first bearing and the second bearing.
    Type: Application
    Filed: February 22, 2001
    Publication date: August 30, 2001
    Inventors: Koichi Matsuoka, Minoru Kondo, Yasunari Terada, Takashi Nagayama, Katsuhiko Ibusuki, Nobuyuki Yagi, Tsutomu Kinoshita
  • Yarn tension device
    Patent number: 5655721
    Abstract: A yarn tension device includes a receiving plate and a pushing plate for clamping a moving yarn and a spring for urging the pushing plate toward the receiving plate; at least one of the receiving plate and the pushing plate is rotatably supported, a drive source drives the rotatable plate, and as a result the device can be maintenance-free.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: August 12, 1997
    Assignee: Yamagata Gravure Co., Ltd.
    Inventor: Koichi Matsuoka
  • Method and apparatus for joint resin pipes using high-frequency electric induction heating
    Patent number: 5466916
    Abstract: When resin pipes are connected through induction heating, the resin pipes of this invention do not form inside bulges due to air and resin expansion during the heating process. A cylindrical heater made of stainless steel is placed around the joint between two resin pipes made of polyvinylidene fluoride. The heater is then heated by induction heating to weld the joint of resin pipes. The heater has a plurality of holes on the cylindrical surface so that air and molten resin located between the heater and the resin pipes are released through the holes.
    Type: Grant
    Filed: July 25, 1994
    Date of Patent: November 14, 1995
    Assignees: Hidec Co., Ltd., Asahi Yukizai Kogyo Co. Ltd.
    Inventors: Atsushi Iguchi, Atsushi Akabane, Takehiro Yamashita, Koichi Matsuoka