Patents Assigned to Larsen & Nielsen Enterprise A/S
  • Machine for surface treatment of concrete panels or sections
    Patent number: 3969056
    Abstract: A machine is disclosed for finishing the surface of a cast concrete unit supported in a mold frame. Opposed vertical supports on opposite sides of the mold frame are movable on longitudinal tracks, and they support transverse support means which are vertically adjustable. Concrete finishing belts and vibratory means are supported on each transverse support means. The belts on different transverse support means are driven in opposite directions and the vibratory means are separately driven.
    Type: Grant
    Filed: February 5, 1975
    Date of Patent: July 13, 1976
    Assignee: Larsen & Nielsen Enterprise A/S
    Inventors: Rasmus Andreas Larsen, Axel Nielsen