Train vehicle protection apparatus including signal block occupa

Details Train vehicle protection apparatus including signal block occupa Train vehicle protection apparatus including signal block occupa

1975-01-29

1976-05-25

Blix, Trygve M.

Railway switches and signals

Block-signal systems

Automatic

340 38R, B61L 2106

Patent

active

039587819

ABSTRACT:
There is disclosed a train vehicle protection apparatus including the determination of train vehicle occupancy of a track circuit signal block, wherein a frequency tone speed code signal is provided to the signal block for controlling the train vehicle speed and a vital and fail-safe determination of train vehicle occupancy of the signal block is provided.

REFERENCES:
patent: 2959670 (1960-11-01), Kendall
patent: 3450874 (1969-06-01), Whitten
patent: 3489892 (1970-01-01), Whitten
patent: 3532877 (1970-10-01), Thorne-Booth

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