(19)

(11)

EP 0 437 465 A1

(12)

(43) Date of publication: 24.07.1991 Bulletin 1991/30 (21) Application number: 89910950.0 (22) Date of filing: 27.09.1989

(51) International Patent Classification (IPC):  E03F 7/ 10( . ) (86) International application number: PCT/SE1989/000524 (87) International publication number: WO 1990/003474 (05.04.1990 Gazette 1990/08)

(84) Designated Contracting States: BE DE FR GB NL SE (30) Priority: 27.09.1988 SE 19880003405 (71) Applicants: LARSSON, Bo S-390 08 Kalmar (SE) LARSSON, Ingemar S-541 39 Skövde (SE)	(72) Inventors: LARSSON, Bo S-390 08 Kalmar (SE) LARSSON, Ingemar S-541 39 Skövde (SE) (74) Representative: Siebmanns, Hubertus  Gotapatent AB, Box 154 S-561 22 Huskvarna S-561 22 Huskvarna (SE)