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Back-up safety device and method

  • US 4,964,485 A
  • Filed: 04/18/1989
  • Issued: 10/23/1990
  • Est. Priority Date: 04/18/1989
  • Status: Expired due to Term
First Claim
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1. An automatic back-up brake device for vehicles with hydraulic brakes, said device comprising, in combination, a vehicle with a hydraulic brake system having an actuating member movable to apply the brakes to stop said vehicle, pneumatic means for selectively actuating said actuating member to apply said brakes to said vehicle, an electrically driven compressor, a compressed air reservoir connected to the outlet of said compressor regulator means, control means for energizing said compressor only when the need therefor is sensed by said regulator means, detecting means for detecting an object with which a collision could occur at the rear of said vehicle, and actuating valve means responsive to said detecting means for conducting pressurized air to said pneumatic means from said reservoir to apply said brakes to stop said vehicle.

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