Preset lighting device

Details Preset lighting device Preset lighting device

1981-01-28

1982-09-07

La Roche, Eugene R.

Electric lamp and discharge devices: systems

Plural load device systems

Electric switch in the supply circuit

307 38, 315201, 315208, 315315, 315320, H05B 3702

Patent

active

043486169

ABSTRACT:
A preset lighting device in which the number of common input and output terminals is reduced and which does not respond to a duplicate switch activation state so that a previously-determined lighting state as maintained until a valid activation state is present. A lighting element is provided for each of plural input switches which are in turn coupled to corresponding input/output terminals. A latch circuit is provided for each lighting element to maintain the lighted state until reset occurs. First and second gate circuits detect a duplicate switching state and control the activation of the lighting elements accordingly.

REFERENCES:
patent: 3778676 (1973-12-01), Keller
patent: 4105928 (1978-08-01), Leconte

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