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(11)

EP 0 776 398 A1

(12)

(43) Date of publication: 04.06.1997 Bulletin 1997/23 (21) Application number: 95931520.0 (22) Date of filing: 11.08.1995

(51) International Patent Classification (IPC):  B61L 5/ 02( . ) B61L 5/ 10( . ) B61L 5/ 06( . ) (86) International application number: PCT/US1995/010255 (87) International publication number: WO 1996/006228 (29.02.1996 Gazette 1996/10)

(84) Designated Contracting States: DE GB IT NL (30) Priority: 19.08.1994 US 19940293126 19.08.1994 US 19940293121 19.08.1994 US 19940293242 19.08.1994 US 19940293127 19.08.1994 US 19940293125 (71) Applicant: GENERAL RAILWAY SIGNAL CORP. Rochester, NY 14620 (US)

(72) Inventors: ALBRECHT, Harry, A. Hobe Sound, FL 33455 (US) BONNER, George, A. Palm Beach Gardens, FL 33410 (US) EGGEBRECHT, Charles, M. Churchville, NY 14428 (US) GORDON, Keith, J. West Palm Beach, FL 33409 (US) LUDWICK, George, E. Tequesta, FL 33469 (US) MYERS, Steven, W. Palm Beach Gardens, FL 33410 (US) VAN ALSTINE, Daniel, W. Rochester, NY 14612 (US) (74) Representative: Waldren, Robin Michael, et al  MARKS & CLERK, 57-60 Lincoln's Inn Fields London WC2A 3LS London WC2A 3LS (GB)