Patents by Inventor Shin Tsukuma

Shin Tsukuma 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).

  • Yarn feeding device for knitting machines
    Patent number: 3955769
    Abstract: The present invention is an improved yarn feeding device which continuously forms yarn coils from a yarn package on its conical shaped winding body and then feeds the yarn to knitting machines with low and constant tension. A taper angle of the winding body is optionally adjustable according to the stretchability of the treated yarn for pushing the yarn coils smoothly toward a knitting machine.
    Type: Grant
    Filed: May 31, 1974
    Date of Patent: May 11, 1976
    Assignee: Kanebo, Ltd.
    Inventors: Toshihiro Kajiura, Mitsuo Nagai, Shin Tsukuma, Akira Mizuno