Road structure – process – or apparatus – Apparatus – Rotating drum – roller or tire
Patent
1979-04-18
1981-01-20
Corbin, John K.
Road structure, process, or apparatus
Apparatus
Rotating drum, roller or tire
404 14, G02B 512
Patent
active
042458889
ABSTRACT:
The device is designed for attaching on the rear parts of automotive vehicles and serves, especially during the night, for visual informing of drivers about the presence, the distance, the width and the length of a preceding vehicle. The device consists of light-reflecting elements, for instance, reflex foil, or of light-emitting elements, for instance, lamps. The said elements 1 arranged in two rows, one above the other, with the same spacing between the said elements, form a single module 4, and a pair of such modules arranged one above the other form a double warning-information module 5. The number of modules in a single strip /FIG. 1/ and in a double strip /FIG. 2/ depends on the width of the vehicle. The elements and all spacings /2, 3, 6, 7/ are selected so that at an increase of the observation distance there occurs multiple apparent joining of light spots into figures of various shapes characteristic of the determined ranges of distance, and at a decrease of the observation distance--the said process proceeds inversely.
REFERENCES:
patent: 3017713 (1962-01-01), Butler
patent: 3582108 (1971-06-01), Carlton
patent: 3950098 (1976-04-01), Caine
Reflective Rear Marker-Plates, The Motor Vehicles (Rear Markings) Regulations, 1970, 3M.
Corbin John K.
de los Reyes B. W.
Greigg Edwin E.
Ministerstwo Komunikacji Department Komunikacji Drogowej of
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