Electrical transmission or interconnection systems – Plural load circuit systems – Selectively connected or controlled load circuits
Patent
1978-10-27
1980-04-08
Hix, L. T.
Electrical transmission or interconnection systems
Plural load circuit systems
Selectively connected or controlled load circuits
361191, 340147LP, H02J 300
Patent
active
041974689
ABSTRACT:
In a preferred embodiment, a plurality of interconnected demand controllers of the invention, each demand controller being connected to and controllable of one or more different machines (loads) controlled thereby a plurality of the interconnected demand controllers being controlled by others of the interconnected demand controllers whereby a priority of running of particular machines and of non-running of other machines may be predetermined and maintained automatically, and also there being safeguards against intermittent inconsequential variations in activating currents and/or short-term cessations thereof not ordinarily intended to change the sequence or preference, each controller being basically inclusive of a transformer with the load-switch on the high-voltage side as controlled by switch coils thereof of a relay-type located on the low-voltage side in electrical flow series with a normally-closed low-voltage switch of a relay type controlled by other relay switch coils in another different electrical circuit preferably of low voltage, and preferably having a delay mechanism associated with the other relay switch coils delaying initial activation, as well as also preferably having an additional delay mechanism also associated with the other relay switch coils temporarily maintaining activation subsequent to cessation of an activating signal.
REFERENCES:
patent: 2311438 (1943-02-01), Hoyt
patent: 2712101 (1955-06-01), Salati
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patent: 3311795 (1967-03-01), Eilbert
patent: 3339079 (1967-08-01), Kessler
patent: 3359426 (1967-12-01), Burr
patent: 3443114 (1969-05-01), Morrison
patent: 4066913 (1978-01-01), Manning et al.
Dwyer James L.
Hix L. T,.
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