Global Patent Index - EP 2076341 A2

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

EP 2076341 A2 20090708 (EN)

Application

EP 07824106 A 20071010

Priority

  • GB 2007003852 W 20071010
  • GB 0620035 A 20061010

Abstract (en)

[origin: GB2442793A] 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)

B21D 25/02 (2013.01 - EP GB); B21D 25/04 (2013.01 - EP); B21D 37/02 (2013.01 - EP)

Citation (search report)

See references of WO 2008044021A3

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)

GB 0620035 D0 20061122; GB 2442793 A 20080416; AT 451982 T 20100115; DE 602007003861 D1 20100128; EP 2076341 A2 20090708; EP 2076341 B1 20091216; US 2010031726 A1 20100211; WO 2008044021 A2 20080417; WO 2008044021 A3 20080703

DOCDB simple family (application)

GB 0620035 A 20061010; AT 07824106 T 20071010; DE 602007003861 T 20071010; EP 07824106 A 20071010; GB 2007003852 W 20071010; US 44490207 A 20071010