(19)

(11)

EP 0 314 765 A1

(12)

(43) Date of publication: 10.05.1989 Bulletin 1989/19 (21) Application number: 88905022.0 (22) Date of filing: 20.05.1988

(51) International Patent Classification (IPC):  F03B 13/ 18( . ) (86) International application number: PCT/SE1988/000267 (87) International publication number: WO 1988/009414 (01.12.1988 Gazette 1988/26)

(84) Designated Contracting States: FR GB IT NL SE (30) Priority: 21.05.1987 GB 19870012078 (71) Applicant: HENRIKSON, Stig Arvid S-112 26 Stockholm (SE)	(72) Inventor: HENRIKSON, Stig Arvid S-112 26 Stockholm (SE) (74) Representative: Nordén, Ake  Oscar Grahn Patentbyra AB Box 19540 S-104 32 Stockholm S-104 32 Stockholm (SE)