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(11)

EP 1 871 548 A1

(12)

(43) Date of publication: 02.01.2008 Bulletin 2008/01 (21) Application number: 05741917.8 (22) Date of filing: 14.04.2005

(51) International Patent Classification (IPC):  B08B 9/04(2006.01) (86) International application number: PCT/US2005/013667 (87) International publication number: WO 2006/112847 (26.10.2006 Gazette 2006/43)

(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: Emerson Electric Co. St. Louis, MO 63136 (US)	(72) Inventors: RUTKOWSKI, Michael, J. Brunswick, OH 44212 (US) BABB, Larry, F. Grafton, OH 44044 (US) (74) Representative: Bryn-Jacobsen, Caelia et al Kilburn & Strode, 20, Red Lion Street London WC1R 4PJ London WC1R 4PJ (GB)