Patents by Inventor Naohisa SHIRAFUJI

Naohisa SHIRAFUJI 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).

  • Optical fiber cutter
    Patent number: 10520675
    Abstract: Provided is an optical fiber cutter for cutting an optical fiber, the optical fiber cutter including a cutter base, a slider, a blade member, a rotating body, and a rotation control mechanism that controls rotation of the blade member, in which the rotation control mechanism includes a main body rotatably provided in the cutter base, and a swinging portion that swings around a shaft provided in the cutter base in conjunction with rotation of the main body, and the swinging portion swings to a first position at which the swinging portion comes into contact with the rotating body to rotate the blade member by a predetermined angle when the slider reaches a predetermined position and a second position at which the swinging portion does not come into contact with the rotating body at the predetermined position of the slider.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: December 31, 2019
    Assignee: SEI Optifrontier Co., Ltd.
    Inventors: Hiroshi Nakamura, Takeshi Noake, Naohisa Shirafuji
  • OPTICAL FIBER CUTTER
    Publication number: 20190049667
    Abstract: Provided is an optical fiber cutter for cutting an optical fiber, the optical fiber cutter including a cutter base, a slider, a blade member, a rotating body, and a rotation control mechanism that controls rotation of the blade member, in which the rotation control mechanism includes a main body rotatably provided in the cutter base, and a swinging portion that swings around a shaft provided in the cutter base in conjunction with rotation of the main body, and the swinging portion swings to a first position at which the swinging portion comes into contact with the rotating body to rotate the blade member by a predetermined angle when the slider reaches a predetermined position and a second position at which the swinging portion does not come into contact with the rotating body at the predetermined position of the slider.
    Type: Application
    Filed: November 17, 2016
    Publication date: February 14, 2019
    Applicant: SEI Optifrontier Co., Ltd.
    Inventors: Hiroshi NAKAMURA, Takeshi NOAKE, Naohisa SHIRAFUJI