(19)

(11)

EP 2 315 964 A1

(12)

(43) Date of publication: 04.05.2011 Bulletin 2011/18 (21) Application number: 09798494.2 (22) Date of filing: 23.06.2009

(51) International Patent Classification (IPC):  F16D 55/22(2006.01) (86) International application number: PCT/US2009/048287 (87) International publication number: WO 2010/008842 (21.01.2010 Gazette 2010/03)

(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: 18.07.2008 US 176273 18.07.2008 US 176242 (71) Applicant: Whittaker Corporation Simi Valley, CA 93063 (US)	(72) Inventors: OLLAT, Xavier Dana Point CA 92629 (US) GUO, Yingpei San Diego CA 92131 (US) LOTTER, Robert Anaheim CA 92807 (US) (74) Representative: Polypatent  An den Gärten 7 51491 Overath 51491 Overath (DE)