(19)

(11)

EP 1 509 818 A2

(12)

(88) Date of publication A3: 15.07.2004 (43) Date of publication: 02.03.2005 Bulletin 2005/09 (21) Application number: 03731477.0 (22) Date of filing: 30.05.2003

(51) International Patent Classification (IPC)7: G04B 19/00, G04B 37/00, G04B 47/00, G04C 11/02, G04C 19/00 (86) International application number: PCT/US2003/017213 (87) International publication number: WO 2003/102702 (11.12.2003 Gazette 2003/50)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 30.05.2002 US 384243 P 16.10.2002 US 418694 P (71) Applicant: Hourpower LLC Shaker Heights, OH 44120 (US)	(72) Inventors: ELLNER, Brenda Shaker Heights, OH 44120 (US) NANCE, Paulette Moreland Hills, OH 44022 (US) (74) Representative: Hofer, Dorothea, Dipl.-Phys. et al Prüfer & Partner GbRPatentanwälteHarthauser Strasse 25 d 81545 München 81545 München (DE)