(19)

(11)

EP 0 555 232 A1

(12)

(43) Date of publication: 18.08.1993 Bulletin 1993/33 (21) Application number: 91916212.0 (22) Date of filing: 26.09.1991

(51) International Patent Classification (IPC):  E04C 3/ 293( . ) E04C 5/ 065( . ) (86) International application number: PCT/FI1991/000294 (87) International publication number: WO 1992/008018 (14.05.1992 Gazette 1992/11)

(84) Designated Contracting States: DE ES FR GB SE (30) Priority: 30.10.1990 FI 19900005347 (71) Applicant: SALO, Seppo SF-33710 Tampere (FI)	(72) Inventor: SALO, Seppo SF-33710 Tampere (FI) (74) Representative: Lins, Edgar, Dipl.-Phys. Dr.jur.  Patentanwälte Gramm + Lins Theodor-Heuss-Strasse 1 D-38122 Braunschweig D-38122 Braunschweig (DE)