Patents by Inventor Shiyouzi Muroi

Shiyouzi Muroi 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).

  • Sewing machine
    Patent number: 4649843
    Abstract: A sewing machine is disclosed herein. The sewing machine comprises a looper rockably supported on the frame of the machine below the throat plate for rocking movement in response to the rotation of the machine shaft and having first and second thread holes, a thread transfer mechanism adapted to move the leading end of a looper thread to a position facing the second thread hole after the leading end of the thread has passed through the first thread hole and a threading device adapted to pass the leading end of the looper thread through the second thread hole.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: March 17, 1987
    Assignee: Tokyo Juki Industrial Co., Ltd
    Inventors: Shiyouzi Muroi, Katsuhiko Taguchi