(19)

(11)

EP 0 130 973 A1

(12)

(43) Date of publication: 16.01.1985 Bulletin 1985/03 (21) Application number: 83900454.0 (22) Date of filing: 03.01.1983

(51) International Patent Classification (IPC):  G08B 13/ 24( . ) (86) International application number: PCT/US1983/000010 (87) International publication number: WO 1984/002789 (19.07.1984 Gazette 1984/17)

(84) Designated Contracting States: CH DE FR GB LI NL SE (71) Applicant: SHIN, Myong Livonia MI 48150 (US)	(72) Inventors: SCARR, Roger Pickering, Ontario (CA) FEARON, Edward, R. Richardson, TX 75080 (US) (74) Representative: Schaumburg, Thoenes & Thurn  Mauerkircherstrasse 31 D-81679 München D-81679 München (DE)