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MICHEL HOWARD COLLINS
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MICHEL HOWARD COLLINS
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Application filed by MICHEL HOWARD COLLINSfiledCriticalMICHEL HOWARD COLLINS
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Publication of FR469843ApublicationCriticalpatent/FR469843A/fr
B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
B61L23/08—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only
B61L23/14—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only automatically operated
B61L23/16—Track circuits specially adapted for section blocking
B61L23/166—Track circuits specially adapted for section blocking using alternating current
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Engineering & Computer Science
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Mechanical Engineering
(AREA)
FR469843D1914-03-171914-03-17Système d'appareils à signaux pour chemins de fer
ExpiredFR469843A
(fr)