Global patent index - EP 1009555 A1

EP 1009555 A1 2000-06-21 - SPIRAL-FORMED EXHAUST TUBE

Title (en)

SPIRAL-FORMED EXHAUST TUBE

Title (de)

AUS EINEM SCHRAUBENNAHTROHR GEFORMTES AUSPUFFROHR

Title (fr)

TUBE D'ECHAPPEMENT FORME EN SPIRALE

Publication

EP 1009555 A1 (EN)

Application

EP 98921204 A

Priority

  • US 9809858 W
  • US 4669797 P

Abstract (en)

[origin: WO9851424A1] A method is provided for producing a spiral-formed exhaust tube (12). Material (14) having spaced-apart first and second edges (50, 52) and a die (86) having a groove (96) are provided. Louvers (32) are formed in the material (14). The material (14) is rolled into a tube using the die (86) so that the louvers (32) extend outwardly away from a longitudinal axis (84) of the tube (12). The louvers (32) pass through the groove (96) of the die (86) as the material (14) is rolled into the tube (12). The first and second edges (50, 52) of the material (14) are then connected.

IPC 1-7 (main, further and additional classification)

B21C 37/12

IPC 8 full level (invention and additional information)

B21C 37/12 (2006.01)

CPC (invention and additional information)

B21C 37/126 (2013.01); B21C 37/121 (2013.01); B21C 37/124 (2013.01); B21C 37/157 (2013.01)

Designated contracting state (EPC)

DE ES FR GB IT NL

EPO simple patent family

WO 9851424 A1 19981119; BR 9809110 A 20000801; CA 2290585 A1 19981119; CN 1266387 A 20000913; EP 1009555 A1 20000621; EP 1009555 A4 20021016

INPADOC legal status

2003-06-11 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20021115

2002-10-16 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20020829

2002-10-16 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE ES FR GB IT NL

2000-06-21 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991214

2000-06-21 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE ES FR GB IT NL