(19)

(11)

EP 0 590 062 A1

(12)

(43) Date of publication: 06.04.1994 Bulletin 1994/14 (21) Application number: 92914257.0 (22) Date of filing: 11.06.1992

(51) International Patent Classification (IPC):  E05F 15/ 16( . ) (86) International application number: PCT/US1992/004949 (87) International publication number: WO 1992/022723 (23.12.1992 Gazette 1992/32)

(84) Designated Contracting States: CH DE GB LI (30) Priority: 13.06.1991 US 19910714446 (71) Applicant: The Chamberlain Group, Inc. Elmhurst Illinois 60126 (US)	(72) Inventors: CHANG, James Arlington Heights, IL 60006 (US) SIEGLER, Mark Brookfield, IL 60513 (US) (74) Representative: Shackleton, Nicola, et al  Boult, Wade & Tennant 27 Furnival Street London EC4A 1PQ London EC4A 1PQ (GB)