(19)

(11)

EP 0 500 792 A1

(12)

(43) Date of publication: 02.09.1992 Bulletin 1992/36 (21) Application number: 91900646.0 (22) Date of filing: 02.11.1990

(51) International Patent Classification (IPC):  C10B 1/ 10( . ) F27B 7/ 18( . ) F28F 19/ 00( . ) F27B 7/ 00( . ) F28D 11/ 04( . ) (86) International application number: PCT/US1990/006499 (87) International publication number: WO 1991/006615 (16.05.1991 Gazette 1991/11)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 02.11.1989 US 19890430731 (71) Applicant: HOGAN, Jim S. Sugar Land, TX 77478 (US)	(72) Inventor: HOGAN, Jim S. Sugar Land, TX 77478 (US) (74) Representative: Skone James, Robert Edmund, et al  GILL JENNINGS & EVERY Broadgate House 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)