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Antenna apparatus for vehicle track rail signals

  • US 3,949,959 A
  • Filed: 10/17/1974
  • Issued: 04/13/1976
  • Est. Priority Date: 10/17/1974
  • Status: Expired due to Term
First Claim
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1. In an antenna apparatus for providing a signal current in a track circuit including a plurality of signal blocks for the control of a vehicle operative with said track circuit, the combination offirst means operative with each of adjacent signal blocks for providing a first portion of said signal current in each of said adjacent signal blocks, andsecond means operative with each of said adjacent signal blocks for providing a second portion of said signal current in each of said adjacent signal blocks,with said first means being more efficient in relation to the provision of signal current in said adjacent signal blocks and said second means being operative to balance the respective signal current levels in said adjacent signal blocks.

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