(19)

(11)

EP 0 440 622 A1

(12)

(43) Date of publication: 14.08.1991 Bulletin 1991/33 (21) Application number: 89904147.0 (22) Date of filing: 16.03.1989

(51) International Patent Classification (IPC):  F04C 13/ 00( . ) F16J 15/ 34( . ) (86) International application number: PCT/GB1989/000281 (87) International publication number: WO 1989/008798 (21.09.1989 Gazette 1989/23)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 16.03.1988 GB 19880006242 (71) Applicant: IBEX ENGINEERING COMPANY LIMITED Hastings TN34 1XR (GB)	(72) Inventor: FEAKINS, John, Frederick East Sussex (GB) (74) Representative: Lerwill, John, et al  A.A. Thornton & Co. Northumberland House 303-306 High Holborn London, WC1V 7LE London, WC1V 7LE (GB)