(19)

(11)

EP 0 419 459 A1

(12)

(43) Date of publication: 03.04.1991 Bulletin 1991/14 (21) Application number: 88906429.0 (22) Date of filing: 17.06.1988

(51) International Patent Classification (IPC):  F23D 14/ 16( . ) (86) International application number: PCT/US1988/002085 (87) International publication number: WO 1989/012784 (28.12.1989 Gazette 1989/30)

(84) Designated Contracting States: AT BE DE FR GB IT NL SE (71) Applicant: DEVRON-HERCULES INC. Norcross, GA 30092 (US)	(72) Inventor: ROTH, Reinhold, C. Newport, RI 02840 (US) (74) Representative: Carmichael, David Andrew Halliday  G.F. REDFERN & CO. Redfern House 149/151 Tarring Road Worthing West Sussex BN11 4HE Worthing West Sussex BN11 4HE (GB)