Patents Examined by W. R. Wolff
  • Multiblade plastic fan
    Patent number: 4357913
    Abstract: A cooling fan assembly for a powered vehicle, preferably adapted for automotive use, and having a hub and a plurality of radial fan blades made integral therewith and of synthetic and resilient resin material, the assembly being characterized by the provision of externally knurled bushings and a spacer member, the bushings being coinserted in holes in the hub and the spacer member, the spacer member being fixed to the bushings at one end of the bushings and pressed to one side face of the hub.
    Type: Grant
    Filed: April 4, 1980
    Date of Patent: November 9, 1982
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Takanobu Hori, Motoharu Yoshida