Patents Assigned to Holterbosch Engineering, B.V.
  • Scaffold
    Patent number: 3998292
    Abstract: A scaffold for carrying out activities inside a tank having a substantially cylindrical side wall and a roof with centrally provided therein a manhole, comprising a central mast and, movable therearound, a section for carrying operating platforms rotatably connected to said mast, all scaffold members being coupled for mutual pivotal movement and having such a cross-section that they can be lowered into the tank via the manhole.
    Type: Grant
    Filed: August 26, 1975
    Date of Patent: December 21, 1976
    Assignee: Holterbosch Engineering, B.V.
    Inventor: Johan Leo Maria Holterbosch