Patents by Inventor Eishirou Kawana

Eishirou Kawana 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: 5624297
    Abstract: A buffing apparatus which can buff a thin plate work without causing buckling. The buffing apparatus comprises a plurality of buffing rolls removably secured in a predetermined spaced relationship from each other to a shaft which is driven to rotate, a backup roll disposed in parallel to the buffing rolls and extending over the overall length of all of the buffing rolls, and a holding roll disposed at least between each adjacent ones of the buffing rolls. The holding roll is positioned such that the axis thereof is positioned on a straight line inter-connecting the center of transverse section of one of the buffing rolls and the center of a transverse section of the backup roll and an outer periphery thereof substantially contacts with a contacting plane of the buffing rolls.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: April 29, 1997
    Assignee: Fujitsu Limited
    Inventor: Eishirou Kawana
  • Patent number: 5501629
    Abstract: A buffing apparatus which can buff a thin plate work without causing buckling. The buffing apparatus comprises a plurality of buffing rolls removably secured in a predetermined spaced relationship from each other to a shaft which is driven to rotate, a backup roll disposed in parallel to the buffing rolls and extending over the overall length of all of the buffing rolls, and a holding roll disposed at least between each adjacent ones of the buffing rolls. The holding roll is positioned such that the axis thereof is positioned on a straight line interconnecting the center of transverse section of one of the buffing rolls and the center of a transverse section of the backup roll and an outer periphery thereof substantially contacts with a contacting plane of the buffing rolls.
    Type: Grant
    Filed: September 8, 1993
    Date of Patent: March 26, 1996
    Assignee: Fujitsu Limited
    Inventors: Eishirou Kawana, Hitoshi Ogawa, Koichi Ishida, Kazuo Aoki