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Publication of FR44953EpublicationCriticalpatent/FR44953E/fr
B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L29/00—Safety means for rail/road crossing traffic
B61L29/08—Operation of gates; Combined operation of gates and signals
B61L29/18—Operation by approaching rail vehicle or train
B61L29/22—Operation by approaching rail vehicle or train electrically
B61L29/222—Operation by approaching rail vehicle or train electrically using conductor circuits with separate contacts or conductors
B61L29/224—Operation by approaching rail vehicle or train electrically using conductor circuits with separate contacts or conductors using rail contacts
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FR44953D1933-12-181933-12-18Dispositif de commande automatique pour la fermeture et l'ouverture des barrières d'un passage à niveau
ExpiredFR44953E
(fr)