Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent
1974-03-18
1976-01-20
Schaefer, Robert K.
Electrical transmission or interconnection systems
Switching systems
Condition responsive
340258A, H01H 3600
Patent
active
039341569
ABSTRACT:
Apparatus for reducing the consumption of power by controlling the application and removal of power to and from a plurality of load circuits connected to AC power sources of the same or different phases in response to the movement and absence of movement of an object within a prescribed area.
REFERENCES:
patent: 3459961 (1965-08-01), Ravas
patent: 3801800 (1974-04-01), Newton
Burman Howard
Galemmo Robert A.
Wilson David S.
Colonial Kinetics, Inc.
Ginsburg M.
Schaefer Robert K.
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