Light-reflecting arrangement for use in traffic control devices

Details Light-reflecting arrangement for use in traffic control devices Light-reflecting arrangement for use in traffic control devices

1980-06-05

1982-04-06

Byers, Jr., Nile C.

Road structure, process, or apparatus

Traffic director

Yielding

40611, E01F 900

Patent

active

043233201

ABSTRACT:
A light-reflecting arrangement includes a stack of clean light-reflecting plates which are mounted on a support for gradual advancement, one after the other, into an operative position in which the respective light-reflecting plate replaces the previous one which may have become soiled while dwelling in its operating position, so that a relatively clean plate will be exposed in the operative position at all times to act as a reflector for oncoming traffic. The light-reflecting plates which have been replaced descend by gravity either to form another stack of used light-reflecting plates, or to be collected in a receptacle. The stack of the light-reflecting plates may be advanced by a pusher or by a threaded shaft cooperating with a threaded bore of the respective light-reflecting plate. The pusher may be advanced or the threaded shaft may be rotated by a spring-energized or a battery-energized motor, or by a drive which is energized by ambient pressure or temperature fluctuations.

REFERENCES:
patent: 1766841 (1930-06-01), Sherman
patent: 2224937 (1940-12-01), Stedman
patent: 2808803 (1957-10-01), Weig
patent: 3693511 (1972-09-01), Medynski
patent: 3820911 (1974-06-01), Bays
patent: 4088415 (1978-05-01), Syak
patent: 4245922 (1981-01-01), Auriemma

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