(19)

(11)

EP 2 118 385 A1

(12)

(43) Date of publication: 18.11.2009 Bulletin 2009/47 (21) Application number: 08726371.1 (22) Date of filing: 03.03.2008

(51) International Patent Classification (IPC):  E02F 9/22(2006.01) (86) International application number: PCT/US2008/002817 (87) International publication number: WO 2008/106233 (04.09.2008 Gazette 2008/36)

(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 MT NL NO PL PT RO SE SI SK TR (30) Priority: 01.03.2007 EP 07103359 (71) Applicant: CATERPILLAR INC. Peoria IL 61629-6490 (US)	(72) Inventors: HANKS, Benjamin, John Leicester Leicestershire LE3 9GA (GB) SMITH, Andrew, John Ashbourne Derbyshire DE6 1AT (GB)