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(11)

EP 1 210 692 A1

(12)

(43) Date of publication: 05.06.2002 Bulletin 2002/23 (21) Application number: 99939655.9 (22) Date of filing: 23.07.1999

(51) International Patent Classification (IPC)7: G06T 15/00, G06T 15/10 (86) International application number: PCT/US9916/844 (87) International publication number: WO 0108/102 (01.02.2001 Gazette 2001/05)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (71) Applicant: Power Takeoff, Inc. Longmont, CO 80501 (US)	(72) Inventors: LEE, John, N. Longmont, CO 80501 (US) ROCKWOOD, Alyn Colorado Springs, CO 80908 (US) HAGEN, Lance Boulder, CO 80303 (US) HAGEN, Scott Longmont, CO 80501 (US) (74) Representative: Powell, Stephen David et al WILLIAMS, POWELL & ASSOCIATES,4 St Paul's Churchyard London EC4M 8AY London EC4M 8AY (GB)