Electromagnetically operated linearly sliding shutter for a variable display
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United States of America Patent
Stats
-
Feb 24, 1998
Grant Date -
N/A
app pub date -
Dec 18, 1995
filing date -
Dec 18, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electromagnetically operated, linearly sliding shutter is provided for a light source emanating from a fiber optic light guide, used for example, in a variable display such as those providing information to motorists on highways. For such a display a plurality of shutters in an array is provided with individual shutters being operable under computer control to occlude or allow passage of light in a predetermined pattern. The shutter may include a base unit having bores to hold the end of the fiber optic guide and control electromagnetic coils, and a shutter unit having a slide movable into and out of the path of light from the guide. The shutter unit may be sealed against entry of dust and dirt.
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- Non-US Classification not provided for expired patents
Cited Art Landscape
Patent Citation Ranking
- Citation Ranking not provided for expired patents
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