Electrical transmission or interconnection systems – Plural load circuit systems
Patent
1975-12-02
1977-11-08
Schaefer, Robert K.
Electrical transmission or interconnection systems
Plural load circuit systems
307 31, 307 38, 315185S, H02J 300
Patent
active
040577350
ABSTRACT:
This invention relates generally to ornamental lighting controls and particularly to a lighting control for Christmas tree lighting having preferably at least four duty cycle outputs and wherein the duty cycle patern of each output differs, with respect to a predetermined time interval, from the duty cycle patern of each of the other outputs of the control thereby to produce, in a plurality of ornamental lighting strings respectively connected to the outputs of the control, a coordinated condition of continuously changing light intensities between strings and that occur in predetermined sequential time differing order to result in an overall lighting effect totally unobtainable by any other form of light controlling apparatus.
REFERENCES:
patent: 3421049 (1969-01-01), Logan
patent: 3496451 (1970-02-01), Duncan
patent: 3793531 (1974-02-01), Ferrigno
patent: 3944878 (1976-03-01), Gerontakis
Indyk Eugene S.
Schaefer Robert K.
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