EP 1015145 B1 20021218 - METHOD AND APPARATUS FOR PRODUCING HELICALLY WOUND LOCK-SEAM TUBING
Title (en)
METHOD AND APPARATUS FOR PRODUCING HELICALLY WOUND LOCK-SEAM TUBING
Title (de)
VERFAHREN UND VORRICHTUNG ZUM HERSTELLEN VON GEFALZTEN SCHRAUBENNAHTROHREN
Title (fr)
PROCEDE ET APPAREIL DE PRODUCTION D'UN TUBE A SERTISSAGE ENROULE DE MANIERE HELICOIDALE
Publication
Application
Priority
- SE 9600292 W 19960306
- SE 9501750 A 19950512
- US 40075295 A 19950308
Abstract (en)
[origin: WO9627455A1] In a method for producing helically wound lock-seam tubing (33), a metal strip is fed to a forming head in which the tubing is formed. In order to prevent lock-seam slip, a clinching roller device (30-40) forms interlocking spaced deformations (41) on the lock-seam (37). An apparatus for such production comprises a clinching roller (30) provided with a recess (40) for forming the deformations (41) against a counter-roller (34).
IPC 1-7
IPC 8 full level
B21C 37/12 (2006.01); B21D 39/02 (2006.01)
CPC (source: EP)
B21C 37/121 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE
DOCDB simple family (publication)
WO 9627455 A1 19960912; AT E229850 T1 20030115; AU 4961296 A 19960923; CA 2214493 A1 19960912; CA 2214493 C 20060502; CN 1077463 C 20020109; CN 1177935 A 19980401; CZ 282697 A3 19990414; CZ 293154 B6 20040218; DE 69625525 D1 20030130; DE 69625525 T2 20030904; DK 1015145 T3 20030407; EP 1015145 A1 20000705; EP 1015145 B1 20021218; EP 1266704 A1 20021218; ES 2187636 T3 20030616; HU 223347 B1 20040628; HU P9801707 A2 19981130; HU P9801707 A3 20000628; JP H11501256 A 19990202; NO 312017 B1 20020304; NO 974074 D0 19970904; NO 974074 L 19971027; PL 179477 B1 20000929; PL 322144 A1 19980105
DOCDB simple family (application)
SE 9600292 W 19960306; AT 96906144 T 19960306; AU 4961296 A 19960306; CA 2214493 A 19960306; CN 96192419 A 19960306; CZ 282697 A 19960306; DE 69625525 T 19960306; DK 96906144 T 19960306; EP 02014515 A 19960306; EP 96906144 A 19960306; ES 96906144 T 19960306; HU P9801707 A 19960306; JP 52680796 A 19960306; NO 974074 A 19970904; PL 32214496 A 19960306