Transit system third rail warning signal

Details Transit system third rail warning signal Transit system third rail warning signal

G - Physics

08

B

317/11, 324/59

G08B 21/00 (2006.01) B61L 23/06 (2006.01) G01R 15/14 (2006.01) G01R 19/155 (2006.01)

Patent

CA 1267193

TRANSIT SYSTEM THIRD RAIL WARNING SIGNAL ABSTRACT Apparatus for indicating the presence of power on the third rail of a transit system having two running rails and a third rail includes a first connector for connecting to the third rail and a second connector for connecting to one of the running rails and a circuit for indicating the presence of a voltage between the first connector and the second connector and thereby indicating a voltage between the one running rail and the third rail, the means for indicating including visual and audible signally apparatus. In some forms of the invention the apparatus may include an annunciator and a strobe light. Other forms of the invention include include third and fourth connectors which are magnetically held to the rails.

535032

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