Patents by Inventor Tadashi Kozuka

Tadashi Kozuka 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).

  • Thread feeding apparatus for multi-needle sewing machine
    Patent number: 4843986
    Abstract: When two stitch lines parallel with the hem of a workpiece are stitched by a multi-needle sewing machine, a thread feeding apparatus positively feeds threads to each needle in proportion to the radius of the stitch line curvature such that well-balanced stitch lines are performed. Sensors located adjacent to said needles, and CPU (Central Processing Unit) operate cooperatively to drive each stepping motor which positively feeds the exactly required stitch length to each needle.
    Type: Grant
    Filed: April 28, 1988
    Date of Patent: July 4, 1989
    Assignee: Juki Corporation
    Inventors: Tadashi Kozuka, Minoru Ozaku, Yuji Yamamoto, Yoichi Ando