Automatic device for sensing sudden deceleration, applicable to motor vehicles

Claim 1

An automatic device for sensing sudden deceleration, applicable to motor vehicles, comprising: . generating means, interlocked to a vehicle speedometer, by which to generate a pulsed signal proportional to the rate of deceleration; means for conversion of the signal generated in proportion to the deceleration of the vehicle, consisting of a transformer capable of stepping up and supplying a voltage proportionate to the pulsed signal received by its primary circuit from the generator means; two circuits driven simultaneously by the secondary circuit of the transformer, each circuit comprising a capacitive-resistive circuit, which are designed to supply two signals of dissimilar strength to two corresponding inputs of a discriminator means; said discriminator means comparing the plus or minus value and the amplitude of the two input signals, hence the degree of variation in speed of the vehicle and, whenever the absolute difference between the signals exceeds a selected threshold signifying a sudden deceleration of the vehicle, an output signal is produced that will excite a relay; and luminous indicator means, the same as the stop lights conventionally located at the rear of a regular vehicle, which are connected to a dedicated circuit that is illuminated by excitation of the relay whenever the selected threshold is exceeded.