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US 5,163,748 AGranted
Illuminated clipboard
OwnerDavid L. Messingerinventor
Life of this patent
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Abstract
An illuminated clipboard is disclosed having a transparent board to which is attached a housing carrying a pivotable clip. The board has double beveled edges designed to enhance internal light reflections from sources of light mounted on one end of the board and embedded within it. The housing not only carries the pivotable clip but also includes a clock device and battery powered electrical circuitry designed to not only operate the above-mentioned light sources but also to operate a further light source.
Claims14
An illuminated clipboard, comprising:
- (a) a board made of a transparent material, said board having double beveled edges extending completely about a peripheray thereof, said board having top and bottom continuous surfaces lying in parallel planes;
- (b) illumination means positioned within chamber means formed in said board between said top and bottom surfaces;
- (c) a source of power connected to said illumination means;
- (d) a clip mounted on said board and actuable to retain or release a document or paper with respect to said top surface;
- (e) said illumination means being operable to shine light within said board, said edges defining a prism causing light impinging thereona t an angle greater than a critical angle thereof to interreflect and substantially remain within said board.
2 more elements
Dependencies are inferred from the claim text.