Automatic meter reading device

Details Automatic meter reading device Automatic meter reading device

1975-01-03

1977-01-18

Claffy, Kathleen H.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340188R, 340150, H04M 1100

Patent

active

040040976

ABSTRACT:
A device for automatically reading one or more meters at a remote location and supplying the information read over telephone lines to a central station includes a coupler effective on command from the central station to furnish power to the meter reading device from the telephone lines and to energize the device to duplicate the readings of the meter counters in sequence to respective registers, from which the readings are encoded in an encoder effective to transmit the information through the coupler and over the telephone lines to a central station by frequency-shift modulation, and to repeat the message until signalled by the central station to stop.

REFERENCES:
patent: 3142726 (1964-07-01), Brothman
patent: 3400378 (1968-09-01), Smith
patent: 3553376 (1971-01-01), Bogaart
patent: 3609691 (1971-09-01), Stewart
patent: 3742142 (1973-06-01), Martin
patent: 3743938 (1973-07-01), Davis
patent: 3772649 (1973-11-01), Haselwood
patent: 3796993 (1974-03-01), Fox
patent: 3800091 (1974-03-01), Glidden
patent: 3842206 (1974-10-01), Barsilloti
patent: 3914757 (1975-10-01), Finlay
patent: 3937889 (1976-02-01), Bell

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