(19)

(11)

EP 2 675 607 A1

(12)

(43) Date of publication: 25.12.2013 Bulletin 2013/52 (21) Application number: 11858687.4 (22) Date of filing: 29.12.2011

(51) International Patent Classification (IPC):  B29C 53/56(2006.01) E04C 5/07(2006.01) E04C 2/06(2006.01) E04C 5/20(2006.01) (86) International application number: PCT/CA2011/050813 (87) International publication number: WO 2012/109726 (23.08.2012 Gazette 2012/34)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 14.02.2011 CA 2731343 (71) Applicant: Brandstrom, Randel Edmonton, Alberta T6B 3P3 (CA)	(72) Inventor: Brandstrom, Randel Edmonton, Alberta T6B 3P3 (CA) (74) Representative: Franke, Dirk  Franke & Partner Intellectual Property Law Firm European Patent Attorneys Widenmayerstrasse 25 80538 Munich 80538 Munich (DE)