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B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L1/00—Devices along the route controlled by interaction with the vehicle or train
B61L1/02—Electric devices associated with track, e.g. rail contacts
B61L1/06—Electric devices associated with track, e.g. rail contacts actuated by deformation of rail; actuated by vibration in rail
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Mechanical Engineering
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FR323931D1902-08-221902-08-22Nouveau système de pédale électrique pour voie ferNouveau système de pédale électrique pour voie ferrée rée
ExpiredFR323931A
(fr)