(19)

(11)

EP 0 202 246 A1

(12)

(43) Date of publication: 26.11.1986 Bulletin 1986/48 (21) Application number: 85905171.0 (22) Date of filing: 04.10.1985

(51) International Patent Classification (IPC):  G01V 1/ 155( . ) (86) International application number: PCT/US1985/001927 (87) International publication number: WO 1986/003015 (22.05.1986 Gazette 1986/11)

(84) Designated Contracting States: DE GB (30) Priority: 09.11.1984 US 19840670378 (71) Applicant: INDUSTRIAL VEHICLES INTERNATIONAL, INC. Tulsa, OK 74112 (US)	(72) Inventor: WISOTSKY, Serge, S. Tulsa, OK 74105 (US) (74) Representative: KOHLER SCHMID + PARTNER  Patentanwälte Ruppmannstrasse 27 D-70565 Stuttgart D-70565 Stuttgart (DE)