Communications: electrical – Systems – Selsyn type
Patent
1974-05-28
1976-07-20
Pitts, Harold I.
Communications: electrical
Systems
Selsyn type
340310A, 340171R, H04Q 900
Patent
active
039710106
ABSTRACT:
System and method for controlling the energization of ballasted loads such as flourescent lights in which radio frequency control signals are superimposed on the power circuits which supply power to the loads. Frequency sensitive switching devices connect the loads to the conductors, and these switching devices are actuated in response to the control signals to energize only the desired loads.
REFERENCES:
patent: 2177843 (1939-10-01), Seeley
patent: 3211111 (1965-10-01), Morley
patent: 3414878 (1968-12-01), Smith
patent: 3467835 (1969-09-01), DeCola
patent: 3521267 (1970-07-01), Lester
patent: 3558902 (1971-01-01), Casey
patent: 3594584 (1971-07-01), Woods
FF & L Industries, Inc.
Pitts Harold I.
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