Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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SPX Corp
Original Assignee
General Railway Signal Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Railway Signal CofiledCriticalGeneral Railway Signal Co
Application grantedgrantedCritical
Publication of FR620727ApublicationCriticalpatent/FR620727A/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
(AREA)
Mechanical Engineering
(AREA)
FR620727D1926-07-301926-07-30Perfectionnements aux signaux de chemins de fer
ExpiredFR620727A
(fr)