(19)

(11)

EP 0 723 617 A1

(12)

(43) Date of publication: 31.07.1996 Bulletin 1996/31 (21) Application number: 94925493.0 (22) Date of filing: 30.08.1994

(51) International Patent Classification (IPC):  E04B 1/ 12( . ) (86) International application number: PCT/FI1994/000380 (87) International publication number: WO 1995/007393 (16.03.1995 Gazette 1995/12)

(84) Designated Contracting States: CH DE DK FR GB LI SE Designated Extension States: LT (30) Priority: 07.09.1993 FI 19930003898 (71) Applicant: Lievonen, Paavo 40200 Jyväskylä (FI)	(72) Inventor: Lievonen, Paavo 40200 Jyväskylä (FI) (74) Representative: Tanskanen, Jarmo Tapio, et al  Papula Rein Lahtela Oy, P.O. Box 981 000101 Helsinki 000101 Helsinki (FI)