(19)

(11)

EP 1 226 317 A1

(12)

(43) Date of publication: 31.07.2002 Bulletin 2002/31 (21) Application number: 00932266.0 (22) Date of filing: 10.05.2000

(51) International Patent Classification (IPC)7: E04B 1/343 (86) International application number: PCT/US0012/795 (87) International publication number: WO 0068/523 (16.11.2000 Gazette 2000/46)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 10.05.1999 US 133306 P 25.02.2000 US 185250 P (71) Applicant: Crowell, James H Lake Oswego, OR 97035 (US)	(72) Inventor: Crowell, James H Lake Oswego, OR 97035 (US) (74) Representative: Couchman, Jonathan Hugh  Harrison Goddard Foote,Belgrave HallBelgrave Street Leeds LS2 8DD Leeds LS2 8DD (GB)