(19)

(11)

EP 0 782 542 A1

(12)

(43) Date of publication: 09.07.1997 Bulletin 1997/28 (21) Application number: 95925485.0 (22) Date of filing: 05.07.1995

(51) International Patent Classification (IPC):  C01B 21/ 068( . ) C04B 35/ 591( . ) (86) International application number: PCT/US1995/008418 (87) International publication number: WO 1996/001229 (18.01.1996 Gazette 1996/04)

(84) Designated Contracting States: DE ES FR GB IT (30) Priority: 05.07.1994 US 19940270613 (71) Applicant: EATON CORPORATION Cleveland, Ohio 44114-2584 (US)	(72) Inventor: EDLER, James, P. Troy, MI 48098 (US) (74) Representative: Burke, Steven David, et al  R.G.C. Jenkins & Co. 26 Caxton Street London SW1H 0RJ London SW1H 0RJ (GB)