(19)

(11)

EP 0 208 781 A1

(12)

(43) Date of publication: 21.01.1987 Bulletin 1987/04 (21) Application number: 86901575.0 (22) Date of filing: 15.01.1986

(51) International Patent Classification (IPC):  G08G 5/ 00( . ) (86) International application number: PCT/US1986/000107 (87) International publication number: WO 1986/004437 (31.07.1986 Gazette 1986/17)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 16.01.1985 US 19850692279 (71) Applicant: O'BRIEN, Michael L. Vancouver, WA 98684-7173 (US)	(72) Inventor: O'BRIEN, Michael L. Vancouver, WA 98684-7173 (US)