(19)

(11)

EP 0 494 179 A1

(12)

(43) Date of publication: 15.07.1992 Bulletin 1992/29 (21) Application number: 90913739.0 (22) Date of filing: 25.09.1990

(51) International Patent Classification (IPC):  B66F 9/ 075( . ) (86) International application number: PCT/NO1990/000146 (87) International publication number: WO 1991/004221 (04.04.1991 Gazette 1991/08)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI LU NL SE (30) Priority: 25.09.1989 NO 19890003809 (71) Applicant: BRUBAKKEN, Borgar N-3940 Heistad (NO)	(72) Inventor: BRUBAKKEN, Borgar N-3940 Heistad (NO) (74) Representative: Adams, William Gordon, et al  RAWORTH, MOSS & COOK 36 Sydenham Road Croydon Surrey CR0 2EF Croydon Surrey CR0 2EF (GB)