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(11)

EP 2 081 753 A2

(12)

(88) Date of publication A3: 16.10.2008 (43) Date of publication: 29.07.2009 Bulletin 2009/31 (21) Application number: 07871202.3 (22) Date of filing: 22.10.2007

(51) International Patent Classification (IPC):  B29C 57/00(2006.01) G01F 1/00(2006.01) B29C 63/34(2006.01) G01F 15/00(2006.01) (86) International application number: PCT/US2007/082081 (87) International publication number: WO 2008/067076 (05.06.2008 Gazette 2008/23)

(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 MT NL PL PT RO SE SI SK TR (30) Priority: 15.11.2006 US 865857 P (71) Applicant: PDC Facilities, Inc. Hartland, WI 53029 (US)	(72) Inventors: WOODS, Elmer B. West Bend, WI 53090 (US) BLIEFNICK, Bruce A. Fond du Lac, WI 54935 (US) MASLOWSKI, James P. Wauwatosa, WI 53226 (US) (74) Representative: Popp, Eugen  MEISSNER, BOLTE & PARTNER Postfach 86 06 24 81633 München 81633 München (DE)