(19)

(11)

EP 0 774 031 A1

(12)

(43) Date of publication: 21.05.1997 Bulletin 1997/21 (21) Application number: 95929696.0 (22) Date of filing: 21.07.1995

(51) International Patent Classification (IPC):  E04C 3/ 36( . ) (86) International application number: PCT/CA1995/000440 (87) International publication number: WO 1996/003557 (08.02.1996 Gazette 1996/07)

(84) Designated Contracting States: DE DK ES FR GB IT NL SE (30) Priority: 21.07.1994 US 19940278334 (71) Applicant: Kolenc, Mark Sherwood Park, Alberta T8A 5L1 (CA)	(72) Inventor: Kolenc, Mark Sherwood Park, Alberta T8A 5L1 (CA) (74) Representative: Watts, Peter Graham  Anthony Cundy & Co., 1623 Warwick Road Knowle, Solihull, West Midlands B93 9LF Knowle, Solihull, West Midlands B93 9LF (GB)