Patents by Inventor Shou Sakai

Shou Sakai 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).

  • Bell cup for a rotary atomizing type electrostatic coating device
    Patent number: 9399233
    Abstract: A bell cup includes an inner surface and a coating material diffusion surface on the inner surface of the bell cup. The coating material diffusion surface includes a first range extending from an end part of the coating material diffusion surface to a center part of the coating material diffusion surface, the end part being disposed toward a proximal end of the bell cup, being a convex curved surface facing towards the rotation axis, and on which, in a cross section of any plane that includes the rotation axis, normal line components of a centrifugal force acting on a coating material liquid film due to rotation of the bell cup are substantially equal, and a second range extending from the center part to a distal end edge of the bell cup, and being a being a concave curved surface facing towards the rotation axis.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: July 26, 2016
    Assignees: Nissan Motor Co., Ltd., Keio University
    Inventors: Hiroyuki Mitomo, Tatsuki Kurata, Shirou Ota, Shou Sakai, Kouichi Asakura, Kazuyuki Shizawa, Hideo Sugawara
  • BELL CUP FOR A ROTARY ATOMIZING TYPE ELECTROSTATIC COATING DEVICE
    Publication number: 20150273497
    Abstract: A bell cup includes an inner surface and a coating material diffusion surface on the inner surface of the bell cup. The coating material diffusion surface includes a first range extending from an end part of the coating material diffusion surface to a center part of the coating material diffusion surface, the end part being disposed toward a proximal end of the bell cup, being a convex curved surface facing towards the rotation axis, and on which, in a cross section of any plane that includes the rotation axis, normal line components of a centrifugal force acting on a coating material liquid film due to rotation of the bell cup are substantially equal, and a second range extending from the center part to a distal end edge of the bell cup, and being a being a concave curved surface facing towards the rotation axis.
    Type: Application
    Filed: September 20, 2013
    Publication date: October 1, 2015
    Inventors: Hiroyuki Mitomo, Tatsuki Kurata, Shirou Ota, Shou Sakai, Kouichi Asakura, Kazuyuki Shizawa, Hideo Sugawara