Patents by Inventor Kiyoyuki Ishihara

Kiyoyuki Ishihara 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).

  • Patent number: 7322304
    Abstract: A multi-needle sewing machine capable of preventing twisting (twinning) associated with the oversupply state of a second thread element owing to the abrupt lowering of a thread take-up am even when the vertical reciprocation speeds of the needle bar and the thread take-up are increased to raise the efficiency of sewing. A recess is formed so that the second thread element that is pulled using the through hole of the thread take-up arm while at a bottom dead center can fall into the recess, the thread is lowered abruptly and is in a oversupply state and can be deflected within the recess bounded by jump preventing faces and a beaten thread portion face, so as to make contact with the faces and prevent the thread from jumping.
    Type: Grant
    Filed: March 1, 2006
    Date of Patent: January 29, 2008
    Assignee: Kabushikikaisha Barudan
    Inventor: Kiyoyuki Ishihara
  • Publication number: 20070101916
    Abstract: The present invention provides a multi-needle sewing machine capable of preventing twisting (twining) associated with the oversupply state of a second thread element owing to abrupt lowering of a thread take-up arm even when the vertical reciprocation speeds of the needle bar and the thread take-up arm are increased to raise the efficiency of sewing. In the thread passage of a machine unit, at least on the depth side of the position of the through hole of the thread take-up arm located at the bottom dead center, a recess is formed so that the second thread element 43a that is pulled using the through hole of the thread take-up arm, is lowered abruptly and is in an oversupply state can be deflected therein, a beaten thread receiving face 53a is provided therein, and jump preventing faces 54a are provided on both sides of the receiving face to make the beaten portion 43a of the second thread element come into contact therewith and to prevent the second thread element from jumping.
    Type: Application
    Filed: March 1, 2006
    Publication date: May 10, 2007
    Applicant: Kabushikikaisha Barudan
    Inventor: Kiyoyuki Ishihara