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(11)

EP 1 846 854 A1

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(43) Date of publication: 24.10.2007 Bulletin 2007/43 (21) Application number: 05732934.4 (22) Date of filing: 09.02.2005

(51) International Patent Classification (IPC):  G06F 19/00(2006.01) (86) International application number: PCT/US2005/004142 (87) International publication number: WO 2006/085877 (17.08.2006 Gazette 2006/33)

(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 MC NL PL PT RO SE SI SK TR (71) Applicant: Caterpillar, Inc. Peoria, IL 61629-6490 (US)	(72) Inventors: CLARKE, Burton R. Peoria, IL 61629 (US) DOVE, JR., Kermit H. Peoria, IL 61629 (US) GRICHNIK, Anthony J. Peoria, IL 61629 (US) SESKIN, Michael Peoria, IL 61629 (US) WEIS, Danny L. Peoria, IL 61629 (US) (74) Representative: Wagner, Karl H.  WAGNER & GEYER Patentanwälte Gewürzmühlstrasse 5 80538 München 80538 München (DE)