(19)

(11)

EP 0 923 742 A1

(12)

(43) Date of publication: 23.06.1999 Bulletin 1999/25 (21) Application number: 97940881.0 (22) Date of filing: 05.09.1997

(51) International Patent Classification (IPC):  G08C 15/ 00( . ) G01R 11/ 00( . ) G08C 17/ 02( . ) H04M 11/ 00( . ) G01R 21/ 133( . ) G01D 4/ 00( . ) G01R 22/ 00( . ) H02J 13/ 00( . ) H04Q 9/ 00( . ) (86) International application number: PCT/US1997/015728 (87) International publication number: WO 1998/010299 (12.03.1998 Gazette 1998/10)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 06.09.1996 US 19960024698P (71) Applicant: Innovatec Corporation Milwaukee, WI 53204 (US)	(72) Inventors: EHRKE, Lance, A. Brookfield, WI 53045 (US) NAP, Kimbel A. Glendale, WI 53217 (US) DRESSELHUYS, Donn, R. Shorewood, WI 53211 (US) (74) Representative: Klunker . Schmitt-Nilson . Hirsch  Winzererstrasse 106 80797 München 80797 München (DE)