PROCESS AND APPARATUS FOR PRODUCING SPIRALLY-SEAMED METAL TUBING - Patent 0389558

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EP 0 389 558 A1

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(43)	Date of publication:
	03.10.1990 Bulletin 1990/40

(21)	Application number: 89900858.0

(22)	Date of filing: 05.12.1988

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International Patent Classification (IPC):

B21C 37/ 08^{( . )}
B23K 11/ 06^{( . )}

B21C 37/ 12^{( . )}
B23K 11/ 30^{( . )}

(86)	International application number:
	PCT/GB1988/001098

(87)	International publication number:
	WO 1989/005202 (15.06.1989 Gazette 1989/13)

(84)	Designated Contracting States:
	AT BE CH DE FR GB IT LI LU NL SE

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Priority:

04.12.1987 GB 19870028411

(71)	Applicants:
	SPIRO MACHINES S.A. CH-3178 Bösingen (CH) DIXON, Donald Cossar Ockham, Surrey GU23 6NZ (GB)

(72)	Inventor:
	ROSENGREN, Stig, Erik CH-1752 Villars-sur-Glane (CH)

(74)	Representative: Diamond, Bryan Clive, et al
	Gee & Co. Chancery House Chancery Lane London WC2A 1QU London WC2A 1QU (GB)

(54)	PROCESS AND APPARATUS FOR PRODUCING SPIRALLY-SEAMED METAL TUBING