Patents by Inventor Kazutoki Takeda

Kazutoki Takeda 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).

  • Method of welding a thermoshrinkable sheet and a device for use in the method
    Patent number: 4190485
    Abstract: A method of welding a thermoshrinkable sheet comprises inserting between opposing faces of the sheet to be welded a piece of uncrosslinked resin tape containing peroxide, securing heat-resisting tapes on and adjacent outer faces of a welding portion of the sheet, and heating and pressing the welding portion.A device for use in the method includes a pressing plate having a heater, a receiving plate, a first link pivotally connected at one end to one end of the receiving plate and at the other end to the pressing plate, an operation lever pivoted on one end of the receiving plate, a second link pivotally connected to the free end of the operation lever and to the first link. The first and second links and the operation lever constitute a power amplifier mechanism in which the turning force of the operation lever is amplified to the pressure of the pressing plate through the second and first links.
    Type: Grant
    Filed: October 26, 1977
    Date of Patent: February 26, 1980
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kazutoki Takeda, Yasuo Negishi, Yutaka Hibino