(19)

(11)

EP 0 840 829 A1

(12)

(43) Date of publication: 13.05.1998 Bulletin 1998/20 (21) Application number: 96922718.0 (22) Date of filing: 17.07.1996

(51) International Patent Classification (IPC):  E04B 2/ 86( . ) E04B 2/ 72( . ) E04B 1/ 12( . ) E04C 2/ 20( . ) (86) International application number: PCT/CA1996/000484 (87) International publication number: WO 1997/004185 (06.02.1997 Gazette 1997/07)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 21.07.1995 CA 19952154382 (71) Applicant: McNamara, Bernard St-Lambert, Québec J4P 2P5 (CA)	(72) Inventor: McNamara, Bernard St-Lambert, Québec J4P 2P5 (CA) (74) Representative: Bonnetat, Christian  CABINET BONNETAT 29, rue de St. Pétersbourg 75008 Paris 75008 Paris (FR)