METHOD FOR CLEAVING LAMINATED MINERAL BLOCKS, DEVICE FOR CARRYING OUT THE METHOD AND A PRODUCT PRODUCED BY MEANS OF THE METHOD - Patent 0506770

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EP 0 506 770 A1

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(43)	Date of publication:
	07.10.1992 Bulletin 1992/41

(21)	Application number: 91901467.0

(22)	Date of filing: 19.12.1990

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International Patent Classification (IPC):

B28D 1/ 32^{( . )}

B28D 7/ 04^{( . )}

(86)	International application number:
	PCT/SE1990/000849

(87)	International publication number:
	WO 1991/009715 (11.07.1991 Gazette 1991/15)

(84)	Designated Contracting States:
	AT CH DE ES FR GB IT LI

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Priority:

22.12.1989 SE 19890004342

(71)	Applicant: SKIFFERBOLAGET JACOBSSON & OSCARSSON AB
	S-834 00 Brunflo (SE)

(72)	Inventor:
	MELLGREN, Bo S-834 00 Brunflo (SE)

(74)	Representative: Bjerkén, Jarl Hakan
	Bjerkéns Patentbyra KB P.O.Box 1274 S-801 37 Gävle S-801 37 Gävle (SE)

(54)	METHOD FOR CLEAVING LAMINATED MINERAL BLOCKS, DEVICE FOR CARRYING OUT THE METHOD AND A PRODUCT PRODUCED BY MEANS OF THE METHOD