(19)

(11)

EP 0 281 616 A1

(12)

(43) Date of publication: 14.09.1988 Bulletin 1988/37 (21) Application number: 87906239.0 (22) Date of filing: 17.08.1987

(51) International Patent Classification (IPC):  G01P 11/ 00( . ) H02P 6/ 16( . ) H02P 6/ 06( . ) (86) International application number: PCT/US1987/002071 (87) International publication number: WO 1988/001763 (10.03.1988 Gazette 1988/06)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 04.09.1986 US 19860904096 (71) Applicant: NORTH ATLANTIC INDUSTRIES, INC. Hauppauge, NY 11788 (US)	(72) Inventors: FINDEISEN, Heinz, H. Milford, MA 01757 (US) CLEMENT, Paul, F. Mendon, MA 01756 (US) (74) Representative: Kerr, Simonne June, et al  European Patent Attorney POTTS, KERR & CO. P.O. Box 688 Ascot Berkshire SL5 8YT Ascot Berkshire SL5 8YT (GB)