(19)

(11)

EP 1 409 800 A2

(12)

(88) Date of publication A3: 22.05.2003 (43) Date of publication: 21.04.2004 Bulletin 2004/17 (21) Application number: 02721465.9 (22) Date of filing: 18.03.2002

(51) International Patent Classification (IPC)7: E03C 1/04 (86) International application number: PCT/US2002/008319 (87) International publication number: WO 2002/075183 (26.09.2002 Gazette 2002/39)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 16.03.2001 US 811029 17.07.2001 US 907275 (71) Applicant: Skarie, Loren Vergas, MN 56587 (US)	(72) Inventor: Skarie, Loren Vergas, MN 56587 (US) (74) Representative: Wharton, Peter Robert  Urquhart-Dykes & LordTower North CentralMerrion Way Leeds LS2 8PA Leeds LS2 8PA (GB)