Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1993-01-21
1995-04-25
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250229, 341 31, H01J 516
Patent
active
054101506
ABSTRACT:
A fiber optic controller comprises a keyboard having a plurality of keys. Each key has a transmitting fiber and a receiving fiber wired therein. Light is provided to the transmitting fiber by a light emitting diode and travels to the key and, thence, to the receiving fiber by way of a reflective surface on the key which reflects the light when the key is in a depressed or "on" position. An electronic controller is controlled by signals from photo transistors which signals are initiated when light is transmitted by the receiving fiber to the photo transistor. The electronic controller, in turn, activates a power circuit which powers various of the operating components of a spa or hot tub.
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Hewson C. Bruce
Owen Jeffrey
Teron Allan L.
A. J. Leisure Group Ltd.
Le Que T.
Nelms David C.
Russell Uren John
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