(19)

(11)

EP 1 977 186 A2

(12)

(88) Date of publication A3: 22.11.2007 (43) Date of publication: 08.10.2008 Bulletin 2008/41 (21) Application number: 07718357.2 (22) Date of filing: 10.01.2007

(51) International Patent Classification (IPC):  G01B 3/00(2006.01) F16B 31/02(2006.01) (86) International application number: PCT/US2007/000733 (87) International publication number: WO 2007/084330 (26.07.2007 Gazette 2007/30)

(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 Designated Extension States: AL BA MK RS (30) Priority: 13.01.2006 US 332407 20.01.2006 US 760595 P 20.01.2006 US 335974 (71) Applicant: MTS SYSTEMS CORPORATION Eden Prairie, MN 55344 (US)	(72) Inventors: SCHULZ, Bradley, D. Savage, MN 55378 (US) FAHRENDORFF, Harold, F. Golden Valley, MN 55416 (US) (74) Representative: Vossius & Partner  Siebertstrasse 4 81675 München 81675 München (DE)