(19)

(11)

EP 2 668 097 A1

(12)

(43) Date of publication: 04.12.2013 Bulletin 2013/49 (21) Application number: 11857137.1 (22) Date of filing: 24.01.2011

(51) International Patent Classification (IPC):  B64C 29/00(2006.01) (86) International application number: PCT/US2011/022294 (87) International publication number: WO 2012/102698 (02.08.2012 Gazette 2012/31)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (71) Applicant: Smith, Frick A. Kingsland, TX 78639 (US)	(72) Inventor: Smith, Frick A. Kingsland, TX 78639 (US) (74) Representative: Price, Nigel John King  J A Kemp 14 South Square Gray's Inn London WC1R 5JJ London WC1R 5JJ (GB)