Antenna apparatus for vehicle track rail signals

Details Antenna apparatus for vehicle track rail signals Antenna apparatus for vehicle track rail signals

1974-10-17

1976-10-05

Blix, Trygve M.

Railway switches and signals

Block-signal systems

Automatic

246167M, B61L 322

Patent

active

039840735

ABSTRACT:
An antenna apparatus is disclosed for improved coupling of audio signals in relation to the vehicle track of a transit system operative with steel rails and providing a reduced cost for the associated hardware and lower crosstalk with adjacent signal blocks and track rails.

REFERENCES:
patent: 3746857 (1973-07-01), Hoyler
patent: R27472 (1972-09-01), Thorne-Booth

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