Patents by Inventor Shigemitsu Oguchi

Shigemitsu Oguchi 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: 5436995
    Abstract: An optical fiber connector unit is composed of a ferrule including a first flange and a second flange formed to have a greater diameter than other portions, a stopring provided outside of the ferrule, having on its inner peripheral surface a first step and a second step, a coil spring having one end contacting with the first flange end face and the other end contacting with the first step end face, its tip exerting a spring force in an axial direction towards outside from the stopring; and a locating member provided between the stopring and the ferrule and having a first stopper contacting with the second step end face and a second stopper contacting with the second flange end face. The optical fiber connector using the unit can easily be assembled.
    Type: Grant
    Filed: May 11, 1994
    Date of Patent: July 25, 1995
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Takashi Yoshizawa, Shigemitsu Oguchi, Akira Nagayama, Kazunori Kanayama, Kuniharu Kato, Yashuhiro Ando
  • Patent number: 4544972
    Abstract: A magnetic disc type memory device swinging actuator is constituted by a plurality of a driving assemblies juxtaposed on a stationary shaft and extending in the opposite direction. Each driving assembly include a head arm, a magnetic head mounted on one end of the head arm, a coil supporting member for supporting a flat coil and extending in the opposite direction to the head arm, and first and second permanent magnets spaced from the coil in an axial direction of the shaft and also spaced in a direction of arrangement of the flat coil. The first and second permanent magnets are magnetized in the axial direction of the shaft so that poles of opposite polarities confront the flat coil. The first and second permanent magnets are mounted on a common yoke and the flat coils are disposed in a closed magnetic flux path including the first and second permanent magnets and the yokes.
    Type: Grant
    Filed: July 20, 1982
    Date of Patent: October 1, 1985
    Assignee: Nippon Telegraph & Telephone Public Corporation
    Inventors: Kenji Kogure, Takao Kakizaki, Yasunaga Mitsuya, Shigemitsu Oguchi, Koji Otani
  • Patent number: 4424974
    Abstract: An improved ferro fluidic seal assembly having a cylindrical permanent magnet, a pair of ring-shaped yokes coupled coaxially with said magnet, and a fresh fluid storage containing ferro magnetic fluid mounted in a room defined by said magnet and yokes. Said fresh fluid storage is composed of a resilient elongated member like a stainless steel belt adapted and fixed in a circular shape along the surface of the magnet, and supplies fresh fluid to the clearance gaps defined between said yokes and a rotational body to seal said clearance gaps.
    Type: Grant
    Filed: July 28, 1982
    Date of Patent: January 10, 1984
    Assignee: Nippon Telegraph & Telephone Public Corp.
    Inventors: Yasunaga Mitsuya, Kunio Hoshiya, Shigemitsu Oguchi, Reizo Kaneko
  • Patent number: 4307425
    Abstract: In a magnetic memory device wherein a magnetic recording medium is rotated in a substantially closed chamber, there are provided a throttle between the inside and outside of the chamber, a first air fliter for filtering air flowing through the throttle to prevent moisture from entering into the chamber by diffusion, a container containing a desiccating agent and communicated with the chamber, and a second air filter located between the desiccating agent container and the chamber. In a modified embodiment, another throttle is also provided between the desiccating agent container and the substantially closed chamber.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: December 22, 1981
    Assignee: Nippon Telegraph & Telephone Public Corporation
    Inventors: Reizo Kaneko, Akio Tago, Shigemitsu Oguchi, Shigehisa Hukui
  • Patent number: 4120010
    Abstract: At the start of operation, a floating magnetic head is brought into contact with the surface of a magnetic disk and the magnetic disk is then rotated to float the magnetic head off the magnetic disk surface. At the end of operation, the floating magnetic head is drawn away from the magnetic disk surface of the rotating magnetic disk and, after the lapse of a certain period of time, the magnetic disk is stopped. This prevents the floating magnetic head from sticking to the magnetic disk owing to dew condensation, permits easy miniaturization of the floating space and provides for increased recording density.
    Type: Grant
    Filed: May 25, 1977
    Date of Patent: October 10, 1978
    Assignees: Nippon Telegraph and Telephone Public Corp., Hitachi, Ltd., Fujitsu Limited
    Inventors: Yasunaga Mitsuya, Shigemitsu Oguchi, Wataru Hayakawa, Hatsuo Takahashi, Gen-ichi Ishida, Masayoshi Amasaka