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B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
B61L3/16—Continuous control along the route
B61L3/18—Continuous control along the route using electric current passing between devices along the route and devices on the vehicle or train
B61L3/185—Continuous control along the route using electric current passing between devices along the route and devices on the vehicle or train using separate conductors
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FR322928D1902-07-121902-07-12Appareil pour controler la marche des trains sur les chemins de fer électriques
ExpiredFR322928A
(fr)
Appareil automatique pour la projection des annonces lumineuses sur les parois des tunnels ou les murs des tranchées longeant les voies de chemins de fer, tramways