(19)

(11)

EP 0 190 165 A1

(12)

(43) Date of publication: 13.08.1986 Bulletin 1986/33 (21) Application number: 85903164.0 (22) Date of filing: 17.06.1985

(51) International Patent Classification (IPC):  G01P 15/ 13( . ) (86) International application number: PCT/US1985/001143 (87) International publication number: WO 1986/000416 (16.01.1986 Gazette 1986/02)

(84) Designated Contracting States: BE CH FR LI NL SE (30) Priority: 20.06.1984 US 19840622413 (71) Applicant: SUNDSTRAND DATA CONTROL, INC. Seattle, WA 98052 (US)	(72) Inventor: STEINKE, Kurt, E. Bellevue, WA 98006 (US) (74) Representative: SERJEANTS  25, The Crescent King Street Leicester, LE1 6RX Leicester, LE1 6RX (GB)