Safe-speed indicator system

Details Safe-speed indicator system Safe-speed indicator system

1978-09-01

1981-06-09

Hayes, Monroe H.

Illumination

Plural light sources

With modifier

362232, 362 71, 362280, 340 66, 340 71, 340104, F21V 1300, B60Q 100

Patent

active

042728002

ABSTRACT:
A safe-speed indicator system including a projector device, projecting beams of different colors, such that each pair of beams intersect each other at different predetermined distances which expand during any slowdown of the vehicle upon which the said projector device is mounted, to give the driver following it a measure of how fast a speed change he should anticipate to avoid collision. A color-pattern attached to the speedometer is used by the following driver to find out from the observable color(s) of the projector of the preceding vehicle what his safe speed is.

REFERENCES:
patent: 153591 (1874-07-01), McMullin
patent: 2474610 (1949-06-01), Wunsch
patent: 2531337 (1950-11-01), Knapp
patent: 2559415 (1951-07-01), Field et al.
patent: 3642372 (1972-02-01), Rittenhouse
patent: 3748643 (1973-07-01), Jacobs

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