Patents Assigned to Koji Yoshioka
  • Patent number: 5427208
    Abstract: A bicycle front wheel control mechanism made up of a suspension system and a brake system. The suspension system has an eccentric retainer having an axle and two L-shaped members, and a shaft portion is carried by a housing through an elastic body at a perpendicularly upper part of the axle. The suspension system is so designed that it can rock relative to the front wheel around an axis of the shaft portion with an axial distance between the shaft portion and the axle as its radius, and the brake system is so designed that a side surface of a rim is made wide in a radial direction.
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: June 27, 1995
    Assignees: Hirotetsu Motobu, Koji Yoshioka, Masanobu Kita
    Inventors: Hirotetsu Motobu, Koji Yoshioka, Masanobu Kita, Tadanori Azuma
  • Patent number: 3971571
    Abstract: A front wheel suspension unit for motorcycles, in which the center part of a crank-shaped bent shaft having two parallel axes is taken as the axle, so that buffer effects may be produced against impact inputs in the horizontal direction of movement as well as in the vertical direction, and the wheel is supported, rotating freely around the axis of the said axle, while the other shaft part of the said bent shaft is held at the lower part of the front fork, so that the wheel may be supported while turning freely around the axis of the said shaft part.
    Type: Grant
    Filed: April 30, 1975
    Date of Patent: July 27, 1976
    Assignees: Kayabakogyokabushikikaisha, Koji Yoshioka
    Inventor: Koji Yoshioka