Patents Assigned to Adema Maskin AB
  • Collapsible form and device for removing form from cast concrete
    Patent number: 4666388
    Abstract: Apparatus for forming an opening, such as a window or door, in a concrete structure comprises a form and a device for removing the form from the formed structure. The form has operating members and tension bars for collapsing the sides of the form inwardly. The device comprises a stand having a pair of adjustable length beams carrying hydraulically actuated claw members at their ends for engaging the interior of the form.
    Type: Grant
    Filed: August 29, 1985
    Date of Patent: May 19, 1987
    Assignee: Adema Maskin AB
    Inventors: Lars Kovasna, Gunnar Hornberg