Patents by Inventor Mitsushige Kawakubo

Mitsushige Kawakubo 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).

  • Bending apparatus for a long material
    Patent number: 6711927
    Abstract: A bending apparatus for a long material comprises: supporting device for supporting a long material in cantilever fashion at least in a bending direction; bending device which nips the material at an input point apart from the supporting device and is rotated by a predetermined angle so as to bend the material between the supporting device and the input point; driving device for rotating the bending device; feeding device for moving the material toward the bending device and setting a position of the material; and moving device which sets up a separation distance between the supporting device and the bending device prior to bending of the material and allows the supporting device and the bending device to move relatively during the bending of the material.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: March 30, 2004
    Assignees: NHK Springs Co., Ltd., Morita & Company
    Inventors: Tsutomu Furuyama, Yoshihiro Koshita, Mitsushige Kawakubo, Osamu Shinkai
  • Bending apparatus for a long material
    Publication number: 20020088265
    Abstract: A bending apparatus for a long material comprises: supporting device for supporting a long material in cantilever fashion at least in a bending direction; bending device which nips the material at an input point apart from the supporting device and is rotated by a predetermined angle so as to bend the material between the supporting device and the input point; driving device for rotating the bending device; feeding device for moving the material toward the bending device and setting a position of the material; and moving device which sets up a separation distance between the supporting device and the bending device prior to bending of the material and allows the supporting device and the bending device to move relatively during the bending of the material.
    Type: Application
    Filed: December 21, 2001
    Publication date: July 11, 2002
    Inventors: Tsutomu Furuyama, Yoshihiro Koshita, Mitsushige Kawakubo, Osamu Shinkai
  • Device for narrowing the breadth of a sheet spring material in an apparatus for manufacturing a taper leaf spring
    Patent number: 4290288
    Abstract: A device for narrowing the breadth of a sheet spring material in an apparatus for manufacturing a taper leaf spring by which the sheet spring is previously subjected to breadth narrowing operation with edge rollers before taper rolling.A shape for narrowing the breadth of a sheet spring material is calculated so that a product after rolling may be within the tolerance. Then, a shape of template thus obtained is detected by a pair of detecting rollers to regulate the interval between the work rollers automatically before taper rolling.
    Type: Grant
    Filed: May 30, 1979
    Date of Patent: September 22, 1981
    Assignee: NHK Spring Co., Ltd.
    Inventors: Mitsushige Kawakubo, Yoshihiro Sakai, Akira Ohno