DEVICE TO CONTROL TRACK UNOCCUPANCY Russian patent published in 2011 - IPC B61L23/16 

FIELD: transport.

SUBSTANCE: proposed device comprises, track, transformer, filters, rectifier, capacitor, resistor, track relay, two generators, two track relays with contacts, two transformers, second rectifier, decoder, second capacitor connected at the track center to make left and right resonance loops with adjacent sections of the track. Right resonance loop consists of front contact of the first track relay, second section of track and first capacitor with second transformer input terminal connected in parallel therewith. Left resonance loop consists of first capacitor, third section of the track and rear contact of the first track relay. Said resonance loop is connected to one end of the fourth section of the track. Second track relay is connected via third transformer, third filter and second rectifier to the opposite end of the fourth section of the track. Contact of said second track relay is connected via decoder to third track relay.

EFFECT: greater controlled length of track.

1 dwg