Patents Assigned to Arcia SA
  • Trap door and folding ladder arrangement
    Patent number: 4076102
    Abstract: A trap door and folding ladder arrangement, suitable for use as a fire escape for multi-storey buildings, comprises a folding ladder which can be stored and locked in a folded position in a casing. A cover is connected to the ladder and the casing by two systems of levers and connecting rods arranged to automatically open the cover when the ladder is unlocked and unfolds by its own weight.
    Type: Grant
    Filed: January 21, 1977
    Date of Patent: February 28, 1978
    Assignee: Arcia SA
    Inventors: Francis Desarzens, Claude Cruchet