Patents by Inventor Takayuki Morishima

Takayuki Morishima 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).

  • Coil-spring manufacturing apparatus
    Patent number: 9056349
    Abstract: A coil wire material is bent by a first roll, a second roll, and a third roll. The bent coil wire material is pressed in a screwing direction, to shape a coil spring having a desired diameter and a pitch. A desired pitch can be accurately formed in a manner that a second roll provided on a downstream side of a conveying direction of the coil wire material is configured to be able to move hack and forth along the screwing direction of the coil spring and to be tiltable about an axis of rotation parallel to the conveying direction of the coil wire material.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: June 16, 2015
    Assignee: NHK SPRING CO., LTD.
    Inventors: Akira Katsuyama, Takayuki Morishima, Takashi Yajima, Yuji Mori, Kotaro Nukui