Apparatus for the remote monitoring of meters and other devices

Details Apparatus for the remote monitoring of meters and other devices Apparatus for the remote monitoring of meters and other devices

1982-11-08

1986-08-26

Caldwell, Sr., John W.

Communications: electrical

Continuously variable indicating

With meter reading

324157, 324207, 34087032, G08S 2300

Patent

active

046085645

ABSTRACT:
An improved pick-up means for the remote monitoring of a rotating shaft, or a wheel mounted on the shaft, utilizes the inductive coupling effect between an aperture formed in an annular conductive member and at least one pair of coils or inductors fixedly mounted radially of the annular member. As applied to the remote monitoring of a standard electric service meter, the annular member comprises a metallic rim on the circumference of a plastic disc mounted on a shaft which is journaled within the top front panel of the meter, concentrically within the unit decade dial. Preferably, three inductors are employed, including first and second inductors and a third common inductor therebetween, thereby forming two pairs of inductors; and the signal is generated in the third common inductor whenever a respective aperture on the rim of the disc circumferentially bridges a respective pair of inductors at a predetermined position of the disc.

REFERENCES:
patent: 2403889 (1946-07-01), Di Toro
patent: 2403890 (1946-07-01), Johnson
patent: 3176241 (1965-03-01), Hogan
patent: 3656112 (1972-04-01), Paull
patent: 3750122 (1973-07-01), Maeda
patent: 4032906 (1977-06-01), Jackson, Jr.
patent: 4121147 (1978-10-01), Becker
patent: 4296411 (1981-10-01), Romanelli
patent: 4491789 (1985-01-01), Benbow

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