(19)

(11)

EP 0 377 717 A1

(12)

(43) Date of publication: 18.07.1990 Bulletin 1990/29 (21) Application number: 89907572.0 (22) Date of filing: 16.06.1989

(51) International Patent Classification (IPC):  F02B 33/ 00( . ) F02B 37/ 24( . ) F02B 37/ 12( . ) F02D 41/ 00( . ) (86) International application number: PCT/US1989/002559 (87) International publication number: WO 1989/012734 (28.12.1989 Gazette 1989/30)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 17.06.1988 US 19880208072 (71) Applicant: OSBORN, Norbert Lewis Dallas TX 75247 (US)	(72) Inventor: OSBORN, Norbert Lewis Dallas TX 75247 (US) (74) Representative: UEXKÜLL & STOLBERG  Patentanwälte Beselerstrasse 4 D-22607 Hamburg D-22607 Hamburg (DE)