(19)

(11)

EP 1 386 326 A1

(12)

(43) Date of publication: 04.02.2004 Bulletin 2004/06 (21) Application number: 01937203.6 (22) Date of filing: 01.05.2001

(51) International Patent Classification (IPC)7: G21K 4/00, G02B 27/01 (86) International application number: PCT/US2001/013984 (87) International publication number: WO 2002/089150 (07.11.2002 Gazette 2002/45)

(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 (71) Applicant: Crist, Charles E. Waxahachie, TX 75165-1907 (US)	(72) Inventors: CRIST, Charles, E. Waxahachie, TX 75165-1907 (US) MAYS, Robert, Jr. Albequerque, NM 87111 (US) (74) Representative: Doble, Richard George Vivian  Langner Parry52-54 High Holborn London, WC1V 6RR London, WC1V 6RR (GB)