(19)

(11)

EP 2 281 102 A2

(12)

(88) Date of publication A3: 18.03.2010 (43) Date of publication: 09.02.2011 Bulletin 2011/06 (21) Application number: 09763066.9 (22) Date of filing: 14.04.2009

(51) International Patent Classification (IPC):  E21B 19/22(2006.01) E21B 19/02(2006.01) (86) International application number: PCT/US2009/040498 (87) International publication number: WO 2009/151774 (17.12.2009 Gazette 2009/51)

(84) Designated Contracting States: 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 SE SI SK TR Designated Extension States: AL BA RS (30) Priority: 14.04.2008 US 44747 18.07.2008 US 81974 14.04.2009 US 423408 (71) Applicant: Perry Slingsby Systems, Inc. Jupiter, FL 33458 (US)	(72) Inventors: NELLESSEN, Peter Palm Beach Gardens, FL 33410 (US) SPENCER, Allan Spring, TX 77382 (US) HAM, Gregory Houston, TX 77065 (US) (74) Representative: Stammler, Wolfgang  Tergau & Pohl Patentanwälte Mögeldorfer Hauptstrasse 51 90482 Nürnberg 90482 Nürnberg (DE)