Patents by Inventor Toshiaki Katagiri

Toshiaki Katagiri 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).

  • Transmission line switching apparatus
    Patent number: 5661826
    Abstract: There is disclosed a transmission line switching apparatus comprising a coupling board having a first surface adapted to be connected a first line and a second surface adapted to be connected a second line, adjusting means having a line length adjusting unit for handling surplus portions of the second lines and switching means for changing the connection between the first and second lines, and partition means for dividing the second surface of the coupling board into a plural rows.
    Type: Grant
    Filed: September 9, 1996
    Date of Patent: August 26, 1997
    Assignees: Sumitomo Electric Industries, Ltd., Nippon Telegraph and Telephone Corporation
    Inventors: Kazuhito Saito, Masayuki Nishimura, Tohru Yamanishi, Hideo Kobayashi, Toshiaki Katagiri, Masao Tachikura
  • Optical fiber switching device having one of a robot mechanism and an optical fiber length adjustment unit
    Patent number: 5613021
    Abstract: There is disclosed an optical fiber switching device having a coupling board comprising a plurality of first optical fibers connected to one surface of the coupling board in the arrangement to one surface of the coupling board, a plurality of second optical fibers connected to the another surface of the coupling board, an optical fiber length adjusting unit for handling surplus portions of the second optical fibers and switching unit for pulling out any one of the second optical fibers selected from the plural second optical fibers from the another surface of the connecting board and for connecting the any one optical fiber to different switching position of the another surface of the connecting board to coupling the any one optical fiber with any one of the first optical fibers.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: March 18, 1997
    Assignees: Sumitomo Electric Industries, Ltd., Nippon Telegraph and Telephone Corporation
    Inventors: Kazuhito Saito, Masayuki Nishimura, Tohru Yamanishi, Hideo Kobayashi, Toshiaki Katagiri, Masao Tachikura
  • Transmission line switching apparatus
    Patent number: 5581644
    Abstract: There is disclosed a transmission line switching apparatus comprising a coupling board having a first surface adapted to be connected a first line and a second surface adapted to be connected a second line, adjusting means having a line length adjusting unit for handling surplus portions of the second lines and switching means for changing the connection between the first and second lines, and partition means for dividing the second surface of the coupling board into a plural rows.
    Type: Grant
    Filed: December 8, 1994
    Date of Patent: December 3, 1996
    Assignees: Sumitomo Electric Industries, Ltd., Nippon Telegraph & Telephone Corporation
    Inventors: Kazuhito Saito, Masayuki Nishimura, Tohru Yamanishi, Hideo Kobayashi, Toshiaki Katagiri, Masao Tachikura
  • Optical fiber switching device and method
    Patent number: 5504825
    Abstract: There is disclosed an optical fiber switching device having a coupling board comprising a plurality of first optical fibers connected to one surface of the coupling board in the arrangement to one surface of the coupling board, a plurality of second optical fibers connected to the another surface of the coupling board, an optical fiber length adjusting unit for handling surplus portions of the second optical fibers and switching unit for pulling out any one of the second optical fibers selected from the plural second optical fibers from the another surface of the connecting board and for connecting the any one optical fiber to different switching position of the another surface of the connecting board to coupling the any one optical fiber with any one of the first optical fibers.
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: April 2, 1996
    Assignees: Sumitomo Electric Industries, Ltd., Nippon Telegraph and Telephone Corporation
    Inventors: Kazuhito Saito, Masayuki Nishimura, Tohru Yamanishi, Hideo Kobayashi, Toshiaki Katagiri, Masao Tachikura
  • Optical fiber switching device having an optical fiber length adjustment unit and method for using the same
    Patent number: 5386485
    Abstract: There is disclosed an optical fiber switching device having a coupling board comprising a plurality of first optical fibers connected to one surface of the coupling board in the arrangement to one surface of the coupling board, a plurality of second optical fibers connected to the another surface of the coupling board, an optical fiber length adjusting unit for handling surplus portions of the second optical fibers and switching unit for pulling out any one of the second optical fibers selected from the plural second optical fibers from the another surface of the connecting board and for connecting the any one optical fiber to different switching position of the another surface of the connecting board to coupling the any one optical fiber with any one of the first optical fibers.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: January 31, 1995
    Assignees: Sumitomo Electric Industries, Ltd., Nippon Telegraph and Telephone Corporation
    Inventors: Kazuhito Saito, Masayuki Nishimura, Tohru Yamanishi, Hideo Kobayashi, Toshiaki Katagiri, Masao Tachikura
  • Optical fiber switch including partitions for restricting surplus fibers
    Patent number: 5337378
    Abstract: An optical matrix switch includes a first guide mechanism having plural guide portions arranged in parallel, a first slider for holding an optical fiber, the first slider being freely slidably mounted along a guide portion of the first guide mechanism, a first partition member for isolating a surplus-length portion of the optical fiber along the guide portion of the first guide mechanism the optical fiber being connected to the first slider, and first drive means for moving the first slider along the guide portion of the first guide mechanism.
    Type: Grant
    Filed: April 22, 1993
    Date of Patent: August 9, 1994
    Assignees: Sumitomo Electric Industries, Ltd., Nippon Telegraph and Telephone Corp.
    Inventors: Kazuhito Saito, Hideo Kobayashi, Toshiaki Katagiri