Apparatus for conserving energy in a building. [Patent equipment for controlling energy use in unoccupied hotel rooms and other buildings]
Patent
·
OSTI ID:7253339
Apparatus for turning off power-consuming appliances in rooms of a building having a private automatic branch exchange telephone system includes computer-controlled means at the exchange central periodically to apply short bursts of audio-frequency oscillations to telephone lines going to rooms in which power can be conserved. Detecting means in each room connected to the room telephone line provide an output on receipt of a burst which operates a line relay in the room, disconnecting power from the appliance in the room, for a predetermined time period greater than the time period between the periodic application of bursts at the exchange central.
- Assignee:
- RCA Corp.
- Patent Number(s):
- US 4021615
- OSTI ID:
- 7253339
- Resource Relation:
- Patent File Date: Filed date 30 Jul 1975
- Country of Publication:
- United States
- Language:
- English
Similar Records
Apparatus for conserving energy in electrical appliances
Energy management circuit
Building 105-B---water activity monitoring
Patent
·
Tue Sep 16 00:00:00 EDT 1980
·
OSTI ID:7253339
+1 more
Energy management circuit
Patent
·
Tue Oct 15 00:00:00 EDT 1985
·
OSTI ID:7253339
Building 105-B---water activity monitoring
Technical Report
·
Thu Jul 27 00:00:00 EDT 1944
·
OSTI ID:7253339