EP 0057632 B1 19850828 - CONTROL METHOD FOR A TRAIN WITH AUTOMATIC OPERATION
Title (en)
CONTROL METHOD FOR A TRAIN WITH AUTOMATIC OPERATION
Publication
Application
Priority
FR 8101671 A 19810129
Abstract (en)
[origin: US4487385A] A voltage variation detector is connected to a receiver which is associated with a transmitter inducing an alternating signal permanently in the rails of a railroad track and, accordingly, in a conductive loop positioned between the rails. The respective variations of the voltage induced in the loop and of a feeding voltage to the loop furnish redundant information of the presence of a car in the transmission zone.
IPC 1-7
IPC 8 full level
B61L 3/22 (2006.01)
CPC (source: EP US)
B61L 3/221 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
EP 0057632 A2 19820811; EP 0057632 A3 19820825; EP 0057632 B1 19850828; AU 549842 B2 19860213; AU 7974982 A 19820805; BR 8200435 A 19821130; CA 1179755 A 19841218; DE 3265690 D1 19851003; FR 2498546 A1 19820730; FR 2498546 B1 19831014; US 4487385 A 19841211; ZA 82550 B 19830126
DOCDB simple family (application)
EP 82400128 A 19820125; AU 7974982 A 19820122; BR 8200435 A 19820127; CA 395146 A 19820128; DE 3265690 T 19820125; FR 8101671 A 19810129; US 34277782 A 19820126; ZA 82550 A 19820128