(19)

(11)

EP 0 388 471 A1

(12)

(43) Date of publication: 26.09.1990 Bulletin 1990/39 (21) Application number: 89907385.0 (22) Date of filing: 26.08.1988

(51) International Patent Classification (IPC):  F28D 7/ 16( . ) F28C 3/ 02( . ) F28D 5/ 00( . ) F24F 5/ 00( . ) F28C 3/ 08( . ) F24F 1/ 00( . ) (86) International application number: PCT/SU1988/000170 (87) International publication number: WO 1990/002304 (08.03.1990 Gazette 1990/06)

(84) Designated Contracting States: AT CH DE FR GB IT LI NL SE (71) Applicants: KIEVSKY POLITEKHNICHESKY INSTITUT IMENI 50-LETIA VELIKOI OKTYABRSKOI SOTSIALISTICHESKOI REVOLJUTSII Kiev, 252056 (SU) ODESSKY INZHENERNO-STROITELNY INSTITUT Odessa, 270029 (UA)

(72) Inventors: GERSHUNI, Alexandr Naumovich Kiev, 252005 (SU) MAISOTSENKO, Valery Stepanovich Odessa, 270000 (SU) ZARIPOV, Vladilen Kominovich Kiev, 252098 (SU) NISCHIK, Alexandr Pavlovich Kiev, 252218 (SU) LEVTEROV, Alexandr Iliich Kiev, 252217 (SU) SAVCHENKO, Alexandr Stepanovich Kiev, 252216 (SU) (74) Representative: White, Martin David, et al  MARKS & CLERK, 57/60 Lincoln's Inn Fields London WC2A 3LS London WC2A 3LS (GB)