Patents by Inventor Yukio Natsui

Yukio Natsui 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).

  • Hermetically sealed connector for glove box and method for exchanging such connectors
    Patent number: 4686328
    Abstract: A hermetically sealed connector for a glove box and a method for exchanging such connectors in which leakage of radioactive material from within the glove box is minimized and an auxiliary glove box is not needed to exchange the connectors. The connector is formed as a cylindrical member having a flange portion hermetically sealed to a packing provided in a through hole in the wall of the glove box. To exchange connectors, a nut is removed from the outer end of the old connector and a tube is screwed thereto. The other end of the tube is fitted to the inner end of the new connector. The tube is then shoved through the packing until the flange of the new connector aligns with the packing. The tube is then removed from the inner end of the new connector and a nut is screwed on in replacement for the tube.
    Type: Grant
    Filed: April 20, 1984
    Date of Patent: August 11, 1987
    Assignees: Doryokuro Kakunenryo Kaihatsu Jigyodan, Hitachi Cable Ltd.
    Inventors: Masahito Ui, Hideo Akiyama, Akio Todokoro, Yukio Natsui, Hiroshi Kogure, Yujiro Kato, Tsuneo Ozaki
  • Method for exchanging an hermetically sealed connector on a glove box
    Patent number: 4667400
    Abstract: A hermetically sealed connector for a glove box and a method for exchanging such connectors in which leakage of radioactive material from within the glove box is minimized and an auxiliary glove box is not needed to exchange the connectors. The connector is formed as a cylindrical member having a flange portion hermetically sealed to a packing provided in a through hole in the wall of the glove box. To exchange connectors, a nut is removed from the outer end of the old connector and a tube is screwed thereto. The other end of the tube is fitted to the inner end of the new connector. The tube is then shoved through the packing until the flange of the new connector aligns with the packing. The tube is then removed from the inner end of the new connector and a nut is screwed on in replacement for the tube.
    Type: Grant
    Filed: April 1, 1986
    Date of Patent: May 26, 1987
    Assignees: Doryokuro Kakunenryo Kaihatsu Jigyodan, Hitachi Cable Ltd.
    Inventors: Masahito Ui, Hideo Akiyama, Akio Todokoro, Yukio Natsui, Hiroshi Kogure, Yujiro Kato, Tsuneo Ozaki