公开(公告)号：EP2997204A1

公开(公告)日：2016-03-23

申请号：EP14732399.2

申请日：2014-05-19

申请人： Fondazione di' Persona

发明人： AMADUCCI, Fabrizio

IPC分类号： E04F11/025

CPC分类号： E04F11/025

摘要： A modular spiral staircase, comprising a central support pole (2) and a plurality of steps (3) fixed to said pole (2) at different heights and in different angular positions with reference to the axis of said pole (2) so as to be arranged according to a helix; the central pole (2) comprises a plurality of plate-shaped elements (4) of the same shape, assembled on top of one another and angularly offset with respect to one another by a certain predetermined angle (a) with respect to the axis of said central pole (2) so as to define a substantially helical shape. The staircase moreover comprises connection means (6) for connecting each of said plate-shaped elements (4) to the elements (4) immediately above and below. The connection means (6) comprise a plurality of slotted openings (7,8) foreseen in each of said plate-shaped elements (4), and a plurality of axial fixing elements (9) inserted through said slotted openings (7,8).