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.)
B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L29/00—Safety means for rail/road crossing traffic
B61L29/24—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning
B61L29/28—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning electrically operated
B61L29/30—Supervision, e.g. monitoring arrangements
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
Indication Of The Valve Opening Or Closing Status
(AREA)
Vorrichtung an Rechenmaschinen mit einem zwei Ziffernreihen aufweisenden Umdrehungszaehlwerk zum Verschieben des Schaulochschiebers und zur Sicherung seiner beiden Endlagen