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Train vehicle control apparatus

  • US 4,017,044 A
  • Filed: 08/06/1975
  • Issued: 04/12/1977
  • Est. Priority Date: 08/06/1975
  • Status: Expired due to Term
First Claim
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1. In control apparatus responsive to the movement of a train vehicle, the combination of:

  • means operative with said train vehicle for providing a first speed signal having a first polarity when said train vehicle is moving in a predetermined direction at a speed greater than a predetermined zero speed and having a second polarity when said train vehicle is not moving in said direction at greater than said predetermined zero speed,means operative with said train vehicle for providing a second speed signal having said first polarity when said train vehicle is moving at a speed greater than said predetermined zero speed and having said second polarity when said train vehicle is not moving at greater than said predetermined zero speed, andmeans for providing a vehicle control signal in response to each of said first speed signal and said second speed signal having said first polarity.

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