Patents Assigned to Josei Techno Co., Ltd.
  • Apparatus for flattening floor
    Patent number: 8414220
    Abstract: An apparatus for flattening a half-dry concrete floor includes a plurality of pressure rollers arranged such that axes of them are parallel with one another in an imaginary plane, a holder rotatably supporting the pressure rollers at opposite ends of the pressure rollers, an oscillation-transmitter formed integral with the holder for transmitting oscillation to the pressure rollers, and an oscillator for oscillating the oscillation-transmitter.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: April 9, 2013
    Assignee: Josei Techno Co., Ltd.
    Inventor: Yoshiyuki Koba