Title:
WELDED MULTI-CHAMBER TUBE
Document Type and Number:
WIPO Patent Application WO2003060412
Kind Code:
A3
Abstract:
The invention relates to a multi-chamber tube (1) produced from a flat strip (2) by welding along the longitudinal face, comprising two planar side faces (10, 11), two curved narrow edges (12, 13) and folded webs (7, 8, 9), made from the flat strip (2) which divide adjacent chambers (3, 4, 5, 6) and which are soldered to the inner wall of the tube (11'). According to the invention, the webs (7, 8, 9) are formed from only one side face (10) of the multi-chamber tube (1) and the other side face (11) has an essentially flat embodiment.
Inventors:
WERNER HELMS (DE)
VOLKER KURZ (DE)
VOLKER KURZ (DE)
Application Number:
PCT/EP2003/000403
Publication Date:
December 24, 2003
Filing Date:
January 16, 2003
Export Citation:
Assignee:
BEHR GMBH & CO (DE)
WERNER HELMS (DE)
VOLKER KURZ (DE)
WERNER HELMS (DE)
VOLKER KURZ (DE)
International Classes:
F16L9/19; F28D1/03; F28F1/02; F28F9/00; (IPC1-7): F28D1/03
Foreign References:
| FR2757258A1 | 1998-06-19 | |||
| DE19820937A1 | 1999-11-11 | |||
| EP0302232A1 | 1989-02-08 | |||
| US2573161A | 1951-10-30 | |||
| EP0829316A2 | 1998-03-18 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 19 5 June 2001 (2001-06-05)
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