Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD AND DEVICE FOR BENDING A CYLINDRICAL TUBE OR THE LIKE
Document Type and Number:
WIPO Patent Application WO/2003/013755
Kind Code:
A1
Abstract:
The invention concerns methods and devices for bending a cylindrical tube or the like (1) so as to obtain two consecutive sections (2, 3) of said tube forming between them a non-null angle $g(a). The method is essentially characterised in that it consists in producing, in the wall (4) of the tube (1), a wave (20) defined between two flanks (22, 23) forming between them a non-null angle $g(b) substantially centred on the separation plane (21) between the two sections, then in producing a permanent plastic deformation of the wave (20) until the value of the angle between the two sections (2, 3) is obtained. The device enables to implement said method. The invention is useful in particular but not exclusively, for producing pipes for transporting fluids in motor vehicles or the like.

Inventors:
Dossmann, Brigitte (1 rue du Marsan, Hameau de Craches, Prunay en Yvelines, F-78660, FR)
Humbert, Robert (25 route de la Ferté Alais, La Norville, La Norville, F-91290, FR)
Application Number:
PCT/FR2002/002797
Publication Date:
February 20, 2003
Filing Date:
August 05, 2002
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
Dossmann, Brigitte (1 rue du Marsan, Hameau de Craches, Prunay en Yvelines, F-78660, FR)
Humbert, Robert (25 route de la Ferté Alais, La Norville, La Norville, F-91290, FR)
International Classes:
B21D9/14; B21D26/033; (IPC1-7): B21D9/14; B21D26/02
Attorney, Agent or Firm:
Flavenot, Bernard (ABRITT, 17 rue du Dr Charcot, La Norville, F-91290, FR)
Download PDF: