Illumination – Elongated source light unit or support – Housing
Patent
1976-09-22
1978-02-14
Moses, Richard L.
Illumination
Elongated source light unit or support
Housing
362280, F21V 1118
Patent
active
040741249
ABSTRACT:
Illumination apparatus including a source of artificial light and shutters for totally concealing the source of light during a first amount of time to simulate night conditions, for gradually exposing increasingly larger portions of the source of artificial light during a second amount of time to simulate dawn and morning conditions, for constantly exposing a portion of the source of artificial light during a third amount of time to simulate mid-day condition, and for gradually concealing an increasingly larger portion of the source of artificial light during a fourth amount of time to simulate afternoon and dusk conditions.
REFERENCES:
patent: 2308986 (1943-01-01), Livers
patent: 2374640 (1945-04-01), Paul
patent: 2493829 (1950-01-01), Paul
patent: 2567403 (1951-09-01), Rockola
Ianetti Anthony V.
Maute Charles J.
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