(19)

(11)

EP 0 600 890 A1

(12)

(43) Date of publication: 15.06.1994 Bulletin 1994/24 (21) Application number: 92908954.0 (22) Date of filing: 27.04.1992

(51) International Patent Classification (IPC):  E02D 5/ 80( . ) E04H 12/ 22( . ) E02D 27/ 42( . ) (86) International application number: PCT/CA1992/000177 (87) International publication number: WO 1993/022511 (11.11.1993 Gazette 1993/27)

(84) Designated Contracting States: DE FR GB (71) Applicant: GINGRAS, Marc M. Val Senneville, Québec J0Y 2PO (CA)	(72) Inventor: GINGRAS, Marc M. Val Senneville, Québec J0Y 2PO (CA) (74) Representative: Spall, Christopher John  BARKER, BRETTELL & DUNCAN 138 Hagley Road Edgbaston Birmingham B16 9PW Edgbaston Birmingham B16 9PW (GB)