Patent ID: 6530552
Filing Date: 2003-03-11
Classification: E04G

Abstract:
Modular formwork system with varying curvature, of the type comprising a pair of metal sheets (2) that are complemented by a series of trapezoidal profiles (7) on which act tensioning devices that consist of a nut-spindle mechanism, provided on one end with stiffening elements (10), characterized in that five trapezoidal profiles (7) are welded to each formwork metal sheet (2), and on its ends are two edge profiles (7â€²), with the attachment of the stiffeners (10) to the trapezoidal profiles (7) and edge profiles (7â€²) being effected by intermediate swiveling elements or triangles (13), such that each stiffener (10) is connected to two triangles (13), to one triangle, the central triangle, in a hinged manner and to other, the end triangle, by means of a actuation nut-spindle mechanism (22), with the central triangles (13) being joined to trapezoidal profiles (7) at their other two vertices by a hinged union (15) and a sliding union (16), while the end triangles (13) are joined to a trapezoidal profile (7) and to one of the edge profiles (7â€²), the union with the latter being hinged (15) while the trapezoidal profile (7) is provided with a sliding union (16), all of this such that when the nut (21) of the spindle (22) is actuated the triangles (13) swivel in one sense or the other, in turn pulling or pushing on two trapezoidal profiles (7) and edge profiles (7â€²) and managing to curve the entire length of the metal sheet.