Patents Examined by Rodna Butler
  • Patent number: 5887471
    Abstract: A spring manufacturing apparatus in which the conventional cumbersome process of forming the front end of a quill in accordance with the shape of a desired spring is omitted, and one quill can be used in common for formation of springs having any shapes. A wire is fed out from a wire guide constituted by right and left members, two members symmetric with each other and having inclined surfaces. Tools that are radially arranged to be slidable toward a spring forming space and used for bending, curving, or cutting the wire are caused to abut against the wire to bend or curve it, thereby forming a spring. The spring manufacturing apparatus includes a rotary guide unit, a guide driving motor, tool driving motors, and a CPU. The rotary wire guide unit supports the wire guide and is rotatable about a wire feedout hole of the guide as the center. The guide driving motor transmits a driving force to the rotary wire guide unit. The tool driving motors slide the tools.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: March 30, 1999
    Assignee: Kabushiki Kaisha Itaya Seisaku Sho
    Inventor: Ichiro Itaya