Education and demonstration – Visual art or craft – artistic adornment – or color training... – Drawing
Patent
1980-04-17
1982-07-20
Skogquist, Harland S.
Education and demonstration
Visual art or craft, artistic adornment, or color training...
Drawing
434415, 434426, 40546, G09B 1104
Patent
active
043403727
ABSTRACT:
An educational device utilizing light as the displaying medium is provided. The device has a light-impervious housing having a hole in the top and a light source therein. There is a plexiglass panel inside said housing, accessible through the hole in the top of the housing. The light source is located directly offset one edge of the plexiglass panel such that light rays from said light source enter the plexiglass panel through this edge and are entrapped therein. The housing also has slits in the sides thereof directly below the plexiglass panel so that paper inserts can be placed inside the housing directly beneath the plexiglass panel. The device is employed by turning on the light and by either inserting materials into the above-described slit or by writing on the outer surface of the plexiglass panel with a grease pencil. The light entrapped in the plexiglass panel will escape thru the top of the plexiglass panel and illuminate the inserts and the writing for the user's viewing.
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U.S. Air Force Dispatch board cited by applicant.
Hall William D.
Skogquist Harland S.
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