EP 2076341 A2 20090708 - APPARATUS FOR AND METHOD OF FORMING CURVED PANELS
Title (en)
APPARATUS FOR AND METHOD OF FORMING CURVED PANELS
Title (de)
VORRICHTUNG UND VERFAHREN ZUM FORMEN VON GEKRÜMMTEN PLATTEN
Title (fr)
DISPOSITIF ET MÉTHODE DE FORMAGE DE PANNEAUX INCURVÉS
Publication
Application
Priority
- GB 2007003852 W 20071010
- GB 0620035 A 20061010
Abstract (en)
[origin: US2010031726A1] Aluminium panels curved in mutually orthogonal x, y and z dimensions are made by stretch forming. A former (34) for use in this process comprises a plurality of steel bars (60) extending generally in the y direction and mutually spaced apart in the x direction. The bars (60) are held in side rails (62) and (64), which are formed with holes (66) to receive the bars (60), and flexed over an intermediate rail (68). Thus each bar (60) is curved in a yz plane. The holes (66) and the seats for the bars on the intermediate rail (68) each lie on a curve in an xz plane. So located, the bars (60) combine to define an envelope which is curved in mutually orthogonal x, y and z dimensions. When an aluminium sheet is stretched over the former (34), it takes up the shape of this envelope.
IPC 8 full level
B21D 25/02 (2006.01); B21D 25/04 (2006.01)
CPC (source: EP GB US)
B21D 25/02 (2013.01 - EP GB US); B21D 25/04 (2013.01 - EP US); B21D 37/02 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2010031726 A1 20100211; AT E451982 T1 20100115; DE 602007003861 D1 20100128; EP 2076341 A2 20090708; EP 2076341 B1 20091216; GB 0620035 D0 20061122; GB 2442793 A 20080416; WO 2008044021 A2 20080417; WO 2008044021 A3 20080703
DOCDB simple family (application)
US 44490207 A 20071010; AT 07824106 T 20071010; DE 602007003861 T 20071010; EP 07824106 A 20071010; GB 0620035 A 20061010; GB 2007003852 W 20071010