(19)

(11)

EP 0 401 306 A1

(12)

(43) Date of publication: 12.12.1990 Bulletin 1990/50 (21) Application number: 89904862.0 (22) Date of filing: 20.04.1989

(51) International Patent Classification (IPC):  F16K 3/ 22( . ) F16K 5/ 20( . ) (86) International application number: PCT/SE1989/000219 (87) International publication number: WO 1989/010507 (02.11.1989 Gazette 1989/26)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL (30) Priority: 21.04.1988 SE 19880001490 (71) Applicant: TOUR & ANDERSSON AKTIEBOLAG S-121 72 Johanneshov (SE)	(72) Inventor: LENBERG, Lars S-465 00 Nossebro (SE) (74) Representative: Siebmanns, Hubertus, et al  Gotapatent AB, Box 154 S-561 22 Huskvarna S-561 22 Huskvarna (SE)