(19)

(11)

EP 0 166 766 A1

(12)

(43) Date of publication: 08.01.1986 Bulletin 1986/02 (21) Application number: 85900440.0 (22) Date of filing: 24.12.1984

(51) International Patent Classification (IPC):  A61F 9/ 08( . ) G09B 21/ 00( . ) (86) International application number: PCT/US1984/002097 (87) International publication number: WO 1985/002929 (04.07.1985 Gazette 1985/15)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 23.12.1983 US 19830565171 (71) Applicant: THALES RESOURCES, INC. Hillsboro, OR 97123 (US)	(72) Inventor: DALLAS, Stanley, A., Jr. Portland, OR 97202 (US) (74) Representative: Strehl Schübel-Hopf Groening & Partner  Maximilianstrasse 54 D-80538 München D-80538 München (DE)