(19)

(11)

EP 0 318 586 A1

(12)

(43) Date of publication: 07.06.1989 Bulletin 1989/23 (21) Application number: 88904264.0 (22) Date of filing: 13.05.1988

(51) International Patent Classification (IPC):  H02M 3/ 28( . ) H02M 3/ 337( . ) H02M 3/ 156( . ) (86) International application number: PCT/JP1988/000457 (87) International publication number: WO 1988/009084 (17.11.1988 Gazette 1988/25)

(84) Designated Contracting States: CH DE FR GB LI (30) Priority: 13.05.1987 JP 19870071247U (71) Applicant: OTIS ELEVATOR COMPANY Farmington, CT 06032 (US)	(72) Inventors: IWASA, Masao Chiba-shi Chiba-ken 281 (JP) KITO, Yasutami Nishikasugai-gun Aichi-ken 452 (JP) (74) Representative: Tomlinson, Kerry John, et al  Frank B. Dehn & Co. European Patent Attorneys Imperial House 15-19 Kingsway London WC2B 6UZ London WC2B 6UZ (GB)