Illuminated panels

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United States of America Patent

PATENT NO 4247747
SERIAL NO

06018422

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A self-illuminating panel in which characters are unobtrusively illuminated by projection of light into a narrow face of a transparent flexible lamina marked with the characters. Each character, which may be a translucent printed figure, provides an optical discontinuity which disperses the light so that the diffusely illuminated character can be viewed in contrast against a dark background behind the lamina. Pressure applied on and through the flexible lamina enables operation of an array of switches disposed behind the lamina.

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Patent Owner(s)

  • DECCA LIMITED

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Swatten, Royston W Hanworth, GB2 1 17

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  • 17 Citation Count
  • H01H Class
  • 0 % this patent is cited more than
  • 44 Age
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