Relative distance indicating speedometer for a vehicle

Details Relative distance indicating speedometer for a vehicle Relative distance indicating speedometer for a vehicle

1974-12-27

1976-10-05

Tubbesing, T.H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

340 23, 340 32, 343 9, G01S 906

Patent

active

039848361

ABSTRACT:
There is provided a relative distance indicating speedometer for a vehicle comprising relative distance detecting means for measuring the relative distance of a vehicle carrying the speedometer with respect to an object such as the vehicle in front, and relative distance indicating means for indicating the measured relative distance in accordance with the output signal of the relative distance detecting means. The relative distance indicating means are arranged in the speedometer which indicates the speed of the vehicle, and therefore the apparatus of this invention is inexpensive to manufacture and simple in construction.

REFERENCES:
patent: 2851120 (1958-09-01), Fogiel
patent: 3377587 (1968-04-01), Nakahara et al.
patent: 3824592 (1974-07-01), Mehltretter
patent: 3850041 (1974-11-01), Seaman
Shefer et al.; Harmonic Radar Helps Autos Avoid Collisions; IEEE Spectrum, May 1973; pp. 38-45.

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