Patents by Inventor Koji HIRAGUCHI

Koji HIRAGUCHI 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).

  • Polygon mirror scanner motor
    Patent number: 10634905
    Abstract: A distance between the rotary shaft and the pressurizing position of the polygon mirror by the mirror fixing spring is shorter than a distance between the rotary shaft and a position at which the polygon mirror comes into contact with the seat surface. When a difference between an outer radius and an inner radius of the polygon mirror is defined as A, and a difference between the distance between the rotary shaft and the pressurizing position of the polygon mirror by the mirror fixing spring and the distance between the rotary shaft and the position at which the polygon mirror comes into contact with the seat surface is defined as C, the relationship of 0<C?A/4 is established. When a distance, in a direction orthogonal to the rotary shaft, between a position at which the inner diameter side of the polygon mirror comes into contact with the sleeve and the position of the seat surface is defined as E, the relationship of A/3?E?A/2 is established.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: April 28, 2020
    Assignee: MINEBEA MITSUMI INC.
    Inventors: Yasushi Fukui, Masahiko Anko, Koji Hiraguchi
  • POLYGON MIRROR SCANNER MOTOR
    Publication number: 20180284426
    Abstract: A distance between the rotary shaft and the pressurizing position of the polygon mirror by the mirror fixing spring is shorter than a distance between the rotary shaft and a position at which the polygon mirror comes into contact with the seat surface. When a difference between an outer radius and an inner radius of the polygon mirror is defined as A, and a difference between the distance between the rotary shaft and the pressurizing position of the polygon mirror by the mirror fixing spring and the distance between the rotary shaft and the position at which the polygon mirror comes into contact with the seat surface is defined as C, the relationship of 0<C?A/4 is established. When a distance, in a direction orthogonal to the rotary shaft, between a position at which the inner diameter side of the polygon mirror comes into contact with the sleeve and the position of the seat surface is defined as E, the relationship of A/3?E?A/2 is established.
    Type: Application
    Filed: March 21, 2018
    Publication date: October 4, 2018
    Inventors: Yasushi FUKUI, Masahiko ANKO, Koji HIRAGUCHI