Patents Represented by Attorney John W. Farley
  • Patent number: 4570388
    Abstract: An apparatus for abrasive cleaning comprising a truck adapted to run on the surface to be cleaned and at least one abrasive cleaner supported by a supporting mechanism on the truck and limitedly movable toward or away from the surface, the abrasive cleaner having an abrasive cleaning tool at its lower end, said or each abrasive cleaner being supported by the supporting mechanism so as to be limitedly tiltable in every direction with respect to an axis approximately perpendicular to the surface, the supporting mechanism being provided with a compression spring for biasing the abrasive cleaner away from the surface. Even when the surface to be cleaned has an undulation, the abrasive cleaner tilts with respect to the axis to hold the cleaning tool in uniform contact with the surface and assure a stable and uniform cleaning operation.
    Type: Grant
    Filed: January 9, 1984
    Date of Patent: February 18, 1986
    Assignee: Hitachi Zosen Corporation
    Inventors: Hiroshi Tano, Masanobu Takahashi, Minoru Shiraishi, Yoshimi Numata, Norio Urata, Tatsuo Kawano, Tatsumi Onaka