Measuring and testing – Meteorology – Electric disturbance
Patent
1987-11-10
1989-08-08
Goldstein, Herbert
Measuring and testing
Meteorology
Electric disturbance
73198, G01F 15
Patent
active
048541664
ABSTRACT:
A wading rod for use in measuring depth and current flow velocity in streams, rivers, and the like is disclosed which comprises a base, a lightweight, non-metallic main rod extending from the base having gradations for measuring depth, a lightweight, non-metallic adjustable sliding rod having a locking means, a tailfin receiving means, a receiving means for a current meter, signal transmission means capable of transmitting a signal proportional to flow velocity from a current meter to a signal receiving means, said signal transmission means being disposed inside of said sliding rod, and a level indicator. The wading rod of the present invention is lighter, reads depth more accurately, is more convenient to use, and is more durable, accurate and versatile than prior art wading rods. This rod also operates in rivers of high specific electrical conductance, an improvement over prior art rods which tended to shunt out the meter signal when collecting velocity data in such rivers.
REFERENCES:
patent: 914959 (1909-03-01), Lallie
patent: 1034399 (1912-07-01), Buck
patent: 1593291 (1921-03-01), Critchlow
patent: 3875796 (1975-04-01), Gilliard
U.S. Geological Survey, Book 3, Chapter 48, 1969, pp. 9-11 by Buchanan et . l
Goldstein Herbert
Koltos E. Philip
United States of America as represented by the Secretary of the
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