(19)

(11)

EP 0 383 795 A1

(12)

(43) Date of publication: 29.08.1990 Bulletin 1990/35 (21) Application number: 88909071.0 (22) Date of filing: 10.10.1988

(51) International Patent Classification (IPC):  F25B 43/ 02( . ) F25B 45/ 00( . ) (86) International application number: PCT/US1988/003485 (87) International publication number: WO 1989/003963 (05.05.1989 Gazette 1989/10)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 19.10.1987 US 19870109958 (71) Applicant: VAN STEENBURGH, Leon R Jr. Denver, CO 80231 (US)	(72) Inventor: VAN STEENBURGH, Leon R Jr. Denver, CO 80231 (US) (74) Representative: Lucas, Brian Ronald, et al  Lucas & Co. 135 Westhall Road Warlingham Surrey CR6 9HJ Warlingham Surrey CR6 9HJ (GB)