Railway switches and signals – Electric automatic highway signals – mine doors – and gates
Patent
1977-06-22
1978-08-22
Blix, Trygve M.
Railway switches and signals
Electric automatic highway signals, mine doors, and gates
40455, 340 47, 350 97, 362235, 40902, B61L 2308
Patent
active
041084055
ABSTRACT:
Generally speaking the present invention contemplates a kit-type railroad crossing signal device having four red, double lens lights attached to prewired arms, a module for flasher control, a battery box, an automatic controlled battery charger, switching control and, a metal conduit and clamps. A standard railroad signal bell can also be supplied.
REFERENCES:
patent: 1252758 (1918-01-01), Williams
patent: 2488313 (1949-11-01), Miskelly
patent: 2941185 (1960-06-01), Mullikin
Blix Trygve M.
Eisenzopf Reinhard J.
Oujevolk George B.
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