(19)

(11)

EP 0 698 150 A1

(12)

(43) Date of publication: 28.02.1996 Bulletin 1996/09 (21) Application number: 94916453.0 (22) Date of filing: 11.05.1994

(51) International Patent Classification (IPC):  E01H 10/ 00( . ) (86) International application number: PCT/SE1994/000437 (87) International publication number: WO 1994/026979 (24.11.1994 Gazette 1994/26)

(84) Designated Contracting States: BE DE DK NL (30) Priority: 14.05.1993 SE 19930001660 (71) Applicants: GUSTAVSSON, Jörgen S-583 31 Linköping (SE) ENGDAHL, Sallert S-590 40 Kisa (SE)	(72) Inventors: GUSTAVSSON, Jörgen S-583 31 Linköping (SE) ENGDAHL, Sallert S-590 40 Kisa (SE) (74) Representative: Willquist, Bo  Albihn Willquist AB S:t Larsgatan 23 S-582 24 Linköping S-582 24 Linköping (SE)