Self-checking circuit arrangement for operation of a...

Details Self-checking circuit arrangement for operation of a... Self-checking circuit arrangement for operation of a...

B - Operations, Transporting

61

L

B61L 25/06 (2006.01) B61L 5/18 (2006.01) B61L 19/06 (2006.01)

Patent

CA 2042634

TITLE: Self-Checking Circuit Arrangement for Operation of a Searchlight Signal ABSTRACT The circuit arrangement of this invention includes a signal searchlight wherein the lamp is in an electrical series circuit with interlock contact switches. The switches interlock the display color lens such as yellow and green to control the electrical energization of the signal circuit. Logic control switching devices in a remote wayside control box supply signals through a cable to operate a bipolar device to selectively display the desired color.

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