(19)

(11)

EP 2 094 914 A2

(12)

(88) Date of publication A3: 04.12.2008 (43) Date of publication: 02.09.2009 Bulletin 2009/36 (21) Application number: 07796194.4 (22) Date of filing: 15.06.2007

(51) International Patent Classification (IPC):  E02D 5/80(2006.01) (86) International application number: PCT/US2007/014145 (87) International publication number: WO 2008/088372 (24.07.2008 Gazette 2008/30)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR (30) Priority: 19.12.2006 US 270187 14.05.2007 US 863138 (71) Applicant: Foresight Products, LLC Commerce City, CO 80022 (US)	(72) Inventor: STAHM, William, G. Brighton, Colorado 80602 (US) (74) Representative: Smaggasgale, Gillian Helen  W.P. Thompson & Co, 55 Drury Lane London WC2B 5SQ London WC2B 5SQ (GB)