H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 5/00 (2006.01) B61L 13/04 (2006.01) H01Q 1/32 (2006.01) H01Q 7/06 (2006.01) H04B 15/00 (2006.01) H04B 15/02 (2006.01)
Patent
CA 2168525
Cab signalling apparatus for use on-board a vehicle which is propelled on tracks having a cab signal transmitted through rails. One or more plate mounted antenna is positioned above a rail to induce therein a signal representative of the cab signal current in the rail. A cab signal coil is mounted on at least one of the plates having an orientation generally perpendicular to the rail to receive a cab signal. A second noise coil is mounted on at least one of the plates to sense EMI representative of the undesired EMI induced in the cab signal coil. The preferred embodiments are that the plates have a generally rectangular profile and in some embodiments the plates will have a square profile. The respective noise and cab signal coils are angularly displaced from each other. In some embodiments a single core is used having both noise and cab signal coils mounted thereon, while other embodiments use multiple plates. On single plate embodiments the noise and cab signal coils may be overlapped or interleaved. The plates have mounting holes which permit angular adjustment in all directions.
Macrae & Co.
Union Switch & Signal Inc.
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