(19)

(11)

EP 0 050 638 A1

(12)

(43) Date of publication: 05.05.1982 Bulletin 1982/18 (21) Application number: 81901136.0 (22) Date of filing: 01.05.1981

(51) International Patent Classification (IPC):  F04C 29/ 02( . ) (86) International application number: PCT/GB1981/000079 (87) International publication number: WO 1981/003207 (12.11.1981 Gazette 1981/27)

(84) Designated Contracting States: DE FR SE (30) Priority: 02.05.1980 GB 19800014662 (71) Applicant: The Hydrovane Compressor Company Limited Redditch Worcestershire B98 0DS (GB)	(72) Inventor: BOLLER, Edward Halesowen Worcestershire (GB) (74) Representative: Jennings, Nigel Robin, et al  KILBURN & STRODE 30 John Street London WC1N 2DD London WC1N 2DD (GB)