Electricity: measuring and testing – Determining nonelectric properties by measuring electric...
Patent
1982-01-21
1984-03-20
Strecker, Gerard R.
Electricity: measuring and testing
Determining nonelectric properties by measuring electric...
33132R, 324 72, 324348, 364562, 377 24, G01V 315, G01R 3102, G01N 2700, G01B 702
Patent
active
044383916
ABSTRACT:
The apparatus and method of the present invention facilitate surveys of buried structures, such as pipelines or the like, in particular by substantially automatically measuring and indicating distance information. Preferably that information is obtained by a transducer that produces serial data representing the length of wire bailed out from a portable reel and a cyclical counter responsive to such data for counting the serial data. A signalling device, such as a horn, strobe light, etc., is activated each time the counter completes a cycle as an indication that a predetermined distance has been covered since the last measurement was made and that the next potential measurement should be made. The number of pulses of such serial data counted in each cycle of the counter can be manually adjusted to obtain small or large distance intervals between test locations at which potential or other measurements are to be made to obtain a substantially continuous survey of the pipeline.
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Nicholas Karl W.
Rog Joseph W.
Waits Charles G.
Harco Corporation
Strecker Gerard R.
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