(19)

(11)

EP 1 941 105 A1

(12)

(43) Date of publication: 09.07.2008 Bulletin 2008/28 (21) Application number: 06788637.4 (22) Date of filing: 28.07.2006

(51) International Patent Classification (IPC):  E02F 3/84(2006.01) E02F 9/20(2006.01) (86) International application number: PCT/US2006/029151 (87) International publication number: WO 2007/027330 (08.03.2007 Gazette 2007/10)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 31.08.2005 US 214993 (71) Applicant: CATERPILLAR INC. Peoria, Illinois 61629-6490 (US)	(72) Inventors: STRATTON, Kenneth, L., c/o CATERPILLAR INC., Intellectual Property Dept. Peoria, IL 61629 (US) BAILEY, Scott, E., c/o CATERPILLAR INC., Intellectual Property Dept. Peoria, IL 61629 (US) (74) Representative: Wagner, Karl H.  Wagner & Geyer Gewürzmühlstrasse 5 80538 München 80538 München (DE)