Patent ID: 7854102

Claim:
A panel ( 10 ) for lift doors, which comprises: (a) a plate 12 having a generally rectangular shape, whose longer sides extend along the height thereof, the longitudinal edge portions being folded back in a generally “C”-shaped profile to form opposed edges or rims ( 14 ) that are turned inwardly towards the center of said plate, the lower base portion of said plate being folded to form a generally horizontal flat portion ( 22 ) and a generally vertical portion ( 28 ) extending downwardly from said flat portion ( 22 ), and (b) a plurality of separate stiffening members ( 36 ), each said stiffening member being provided with an extension ( 40 ) along the lower edge thereof, said horizontal flat portion ( 22 ) of said lower base portion of said plate ( 12 ) including a plurality of apertures in which said extensions ( 40 ) are respectively inserted, each said stiffening member ( 36 ) being formed according to a “U”-shaped profile with integrally extended and opposed side areas featuring a planar development, each said stiffening member ( 36 ) being provided at least at its upper end with a plurality of through openings or hollows for fastening both said stiffening member ( 36 ) and a bearing frame ( 20 ) of a lift shutter handling carriage together to said plate ( 12 ) by means of bolts ( 38 ).