Work Guide Patents (Class 451/241)
  • Grinding wheels for the machine working of marble and granite
    Patent number: 5373666
    Abstract: A shaped diamond wheel, at certain height, determined by both the type of grinding wheel which is being used and the working stage, is provided with a rotating feeling pin, consisting of a metal element a few millimeters high which projects for few hundreths of a millimeter with regard to the shape of grinding wheel. The rotating feeling pin does not interfere with the working of stone, with the exception of very small portion of stone which come into contact with the rotating feeling pin.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: December 20, 1994
    Inventor: Lupi Quintilio
  • Polishing apparatus
    Patent number: 5347763
    Abstract: There is disclosed a polishing apparatus utilizing a gel material as the polishing tool, in which the gel material is rotated in the vicinity of a surface to be polished, or is given rotating and rocking motions in direct contact with the surface to be polished.
    Type: Grant
    Filed: November 26, 1993
    Date of Patent: September 20, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahiko Miyamato, Nobuo Nakamura, Jyunji Takashita, Manabu Ando, Katsuo Kawano, Yoshiaki Nishimura, Satoshi Yuasa