(19)

(11)

EP 0 138 837 A1

(12)

(43) Date of publication: 02.05.1985 Bulletin 1985/18 (21) Application number: 84900758.0 (22) Date of filing: 14.02.1984

(51) International Patent Classification (IPC):  G05D 23/ 30( . ) H05B 3/ 34( . ) H05B 1/ 02( . ) (86) International application number: PCT/NO1984/000009 (87) International publication number: WO 1984/003601 (13.09.1984 Gazette 1984/22)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 09.03.1983 NO 19830000816 (71) Applicant: WESSELTOFT, Per N-3060 Svelvik (NO)	(72) Inventor: WESSELTOFT, Per N-3060 Svelvik (NO) (74) Representative: Bayliss, Geoffrey Cyril, et al  BOULT, WADE & TENNANT 27 Furnival Street London EC4A 1PQ London EC4A 1PQ (GB)