(19)

(11)

EP 0 667 934 A1

(12)

(43) Date of publication: 23.08.1995 Bulletin 1995/34 (21) Application number: 94908821.0 (22) Date of filing: 08.09.1993

(51) International Patent Classification (IPC):  F04D 29/ 046( . ) F04D 17/ 12( . ) F04D 29/ 04( . ) F04D 29/ 057( . ) F16C 17/ 03( . ) F04D 17/ 08( . ) F04D 25/ 06( . ) F04D 29/ 047( . ) F04D 29/ 58( . ) (86) International application number: PCT/GB1993/001900 (87) International publication number: WO 1994/005913 (17.03.1994 Gazette 1994/07)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 10.09.1992 GB 19920019167 (71) Applicant: WELSH INNOVATIONS LIMITED Cardiff, South Glamorgan CF1 9LJ (GB)	(72) Inventor: GOZDAWA, Richard Newton, Powys ST16 2LW (GB) (74) Representative: Austin, Hedley William  Urquhart-Dykes & Lord Alexandra House 1 Alexandra Road Swansea West Glamorgan SA1 5ED Swansea West Glamorgan SA1 5ED (GB)