(19)

(11)

EP 1 145 601 A1

(12)

(43) Date of publication: 17.10.2001 Bulletin 2001/42 (21) Application number: 98963029.8 (22) Date of filing: 16.12.1998

(51) International Patent Classification (IPC)7: H05B 6/78, H05B 6/70 (86) International application number: PCT/US9826/215 (87) International publication number: WO 0036/879 (22.06.2000 Gazette 2000/25)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (71) Applicant: Industrial Microwave Systems, Inc. Research Triangle Park, NC 27709 (US)	(72) Inventors: JOINES, William, T. Durham, NC 27707 (US) DROZD, J., Michael Durham, NC 27713 (US) (74) Representative: O'Connell, David Christopher et al Haseltine Lake & Co.,Imperial House,15-19 Kingsway London WC2B 6UD London WC2B 6UD (GB)