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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
B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
B61L3/04—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling mechanically
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FR774105D1933-11-221934-06-04Dispositif de sécurité de marche des trains de chemin de fer lors du franchissement de signaux placés à l'arrêt
ExpiredFR774105A
(fr)
Dispositif de sûreté pour chemin de fer, déterminant automatiquement le freinage des freins pneumatiques d'un train en cas de dépassesement d'un signal fermé