EP 1637249 A1 20060322 - Process for manufacturing a metal sheet having at least a zone with increased thickness for a metal gasket, in particular a cylinder head gasket, and metal sheet obtained therewith
Title (en)
Process for manufacturing a metal sheet having at least a zone with increased thickness for a metal gasket, in particular a cylinder head gasket, and metal sheet obtained therewith
Title (de)
Verfahren zur Herstellung eines Metallblechs mit zumindest einer integrierten Zone mit Überdicke für eine Metalldichtung, insbesondere eine Zylinderkopfdichtung, sowie dadurch hergestelltes Metallblech
Title (fr)
Procédé de fabrication d'une feuille métallique avec au moins une zone de surépaisseur intégrée pour joint métallique serré, notamment un joint de culasse et feuille obtenue
Publication
Application
Priority
FR 0452117 A 20040921
Abstract (en)
The method involves forming a cut in a metal sheet (10) to obtain a sliver. The sliver is deformed by folding and elongating the sliver along a non-cut line so as to obtain an overlapping. The elongation of the sliver is carried out at a free end of the sliver. The sliver is leveled and projecting height of the sliver is calibrated to obtain an over thickness zone (24) of adapted height (h). An independent claim is also included for a metal gasket comprising a metal sheet.
IPC 8 full level
B21D 53/84 (2006.01); B21D 28/10 (2006.01); B21D 28/26 (2006.01)
CPC (source: EP US)
B21D 28/10 (2013.01 - EP US); B21D 28/26 (2013.01 - EP US); Y10T 29/49915 (2015.01 - EP US); Y10T 29/4998 (2015.01 - EP US)
Citation (search report)
- [A] GB 2301636 A 19961211 - COOPERS PAYEN LIMITED [GB]
- [A] BE 392990 A
- [A] US 5348311 A 19940920 - MIYAOH YOSHIO [JP], et al
- [A] PATENT ABSTRACTS OF JAPAN vol. 2003, no. 12 5 December 2003 (2003-12-05)
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 NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1637249 A1 20060322; EP 1637249 B1 20061213; AT E347946 T1 20070115; CA 2520075 A1 20060321; DE 602005000332 D1 20070125; DE 602005000332 T2 20070621; FR 2875423 A1 20060324; FR 2875423 B1 20080222; JP 2006090547 A 20060406; JP 4227609 B2 20090218; MX PA05009997 A 20060327; US 2006207081 A1 20060921; US 7377521 B2 20080527
DOCDB simple family (application)
EP 05019601 A 20050909; AT 05019601 T 20050909; CA 2520075 A 20050919; DE 602005000332 T 20050909; FR 0452117 A 20040921; JP 2005274399 A 20050921; MX PA05009997 A 20050920; US 22141305 A 20050907