Electrical switching apparatus

Details Electrical switching apparatus Electrical switching apparatus

1988-02-22

1989-08-29

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural load circuit systems

Selectively connected or controlled load circuits

307 40, 307 41, H02J 100

Patent

active

048620122

ABSTRACT:
A system for selectively operating a plurality of appliances connected in parallel with one another and with a power supply via single cable which carries control signals of differing characteristics generated from a control signal source, wherein each appliance has an associated control device also powered from the power supply, said control devices being connected in series to provide a control signal-carrying line thereof, and each appliance control device has means for discriminating between control signals of different characteristics and has means for routing the control signals accordingly so that one or more selected appliances are operated in dependence on the characteristic of an arriving signal.

REFERENCES:
patent: 4307302 (1981-12-01), Russell
patent: 4443709 (1984-04-01), Genuit et al.
patent: 4471232 (1984-09-01), Peddie et al.
patent: 4642473 (1987-02-01), Bryant

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