Patents by Inventor Yujiro Takikawa

Yujiro Takikawa 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).

  • Chainstitch forming device for sewing machines
    Patent number: 4164908
    Abstract: A chain stitch forming device includes a loop retaining member for holding a thread loop having been released from a beak of a loop taker. The loop retaining member is provided at the under side of a restraining member which serves to prevent rotation of a bobbin case retainer and is operated in accordance with a cam surface which is directly connected to a lower shaft of the sewing machine.
    Type: Grant
    Filed: January 19, 1978
    Date of Patent: August 21, 1979
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventor: Yujiro Takikawa
  • Thread winding mechanism for sewing machine
    Patent number: 4161153
    Abstract: A thread winding mechanism including a thread winding shaft and a clutch member for disconnecting a torque transmission between a main shaft of a sewing machine and a drive pulley. Once the bobbin is manually inserted into the thread winding shaft the clutch member is automatically actuated to disconnect the main shaft from the drive pulley for preparation of the thread winding operation.
    Type: Grant
    Filed: November 18, 1977
    Date of Patent: July 17, 1979
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Hideo Nawa, Yujiro Takikawa