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GUENTHER HELLMUTH
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GUENTHER HELLMUTH
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Application filed by GUENTHER HELLMUTHfiledCriticalGUENTHER HELLMUTH
Application grantedgrantedCritical
Publication of FR428841ApublicationCriticalpatent/FR428841A/fr
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
(AREA)
Mechanical Engineering
(AREA)
FR428841D1911-04-241911-04-24Système avertisseur pour assurer la sécurité de la circulation des trains de chemins de fer
ExpiredFR428841A
(fr)