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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Engineering & Computer Science
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Mechanical Engineering
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Valves And Accessory Devices For Braking Systems
(AREA)
Dispositif de sûreté pour chemin de fer, déterminant automatiquement le freinage des freins pneumatiques d'un train, en cas de dépassement d'un signal fermé.
Dispositif a double commande pour l'ouverture fermeture d'un clapet notamment de vidange de cuve et wagon comprenant une cuve equipee d'un dispositif a double commande tel que preci te