×

Train protection and control system

  • US 4,087,067 A
  • Filed: 06/10/1977
  • Issued: 05/02/1978
  • Est. Priority Date: 06/28/1976
  • Status: Expired due to Term
First Claim
Patent Images

1. In a train safety and control installation having at least one transmitter disposed at the railway right-of-way for the transmission of orders necessary for train traffic control and for the wireless exchange of general information between a track control center and trains moving in the associated right-of-way section, with a data processing unit being provided at the track control center for the cyclical determination of orders, the combination of monitoring means at the track control center for monitoring the operational availability of the data processing unit, operative, at a predetermined operational readiness of the data processing unit to continuously activate a pilot sound generator whose signals are conducted over the same transmission path of the transmitter as the orders for the traction vehicles, receiving means on the vehicle and switching means cooperable therewith responsive to the presence of a received pilot sound signal for controlling the conduction of received control orders to responsive control means on the traction vehicle.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×