发明名称 Lightweight wading rod for stream flow measurements
摘要 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.
申请公布号 US4854166(A) 申请公布日期 1989.08.08
申请号 US19870124533 申请日期 1987.11.10
申请人 UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE INTERIOR 发明人 FUTRELL, II, JAMES C.
分类号 G01C13/00;G01F1/00;G01F23/04 主分类号 G01C13/00
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