(19)

(11)

EP 2 235 402 A2

(12)

(88) Date of publication A3: 15.10.2009 (43) Date of publication: 06.10.2010 Bulletin 2010/40 (21) Application number: 09708678.9 (22) Date of filing: 29.01.2009

(51) International Patent Classification (IPC):  F16H 61/04(2006.01) F16H 59/04(2006.01) F16H 61/00(2006.01) (86) International application number: PCT/US2009/032398 (87) International publication number: WO 2009/099884 (13.08.2009 Gazette 2009/33)

(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: 31.01.2008 US 6787 (71) Applicant: Caterpillar, Inc. Peoria, IL 61629-9510 (US)	(72) Inventors: KNOX, Kevin, J. Peoria, IL 61629-9510  (US) HEITHOFF, Tyler, J. Peoria, IL 61629-9510 (US) (74) Representative: Wagner, Karl H.  Wagner & Geyer Gewürzmühlstrasse 5 80538 Munich 80538 Munich (DE)