Patents by Inventor Daisaku Kondou

Daisaku Kondou 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).

  • Die holder exchanging method and apparatus
    Patent number: 6638453
    Abstract: Method and apparatus for exchanging a die holder of an extruder, which is tightly pressed from the bottom against a lower surface of an extrusion head by a press member. The pressing force of the press member is reduced to form a gap between a used die holder and the extrusion head. The used die holder and a next die holder positioned collinearly with each other are moved simultaneously and longitudinally, while slidingly contacting both of these die holders with the press member, so as to eject the used die holder from the press member and to deliver the next die holder onto the press member. The next die holder is then tightly pressed from the bottom onto the lower surface of the extrusion head by the press member.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: October 28, 2003
    Assignee: Bridgestone Corporation
    Inventor: Daisaku Kondou
  • Die holder exchanging method and apparatus
    Publication number: 20020096807
    Abstract: Method and apparatus for exchanging a die holder of an extruder, which is tightly pressed from the bottom against a lower surface of an extrusion head by a press member. The pressing force of the press member is reduced to form a gap between a used die holder and the extrusion head. The used die holder and a next die holder positioned collinearly with each other are moved simultaneously and longitudinally, while slidingly contacting both of these die holders with the press member, so as to eject the used die holder from the press member and to deliver the next die holder onto the press member. The next die holder is then tightly pressed from the bottom onto the lower surface of the extrusion head by the press member.
    Type: Application
    Filed: December 21, 2001
    Publication date: July 25, 2002
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Daisaku Kondou