Insitu soil shear measurement apparatus

Details Insitu soil shear measurement apparatus Insitu soil shear measurement apparatus

1985-08-22

1987-03-17

Levy, Stewart J.

Measuring and testing

Hardness

By penetrator or indentor

73784, G01N 300

Patent

active

046497412

ABSTRACT:
A testing apparatus for measuring soil shear strength which includes a torque motor connected to a torque shaft, torque cell and vane which extend beneath the soil surface. The torque cell is located between the shaft and the vane; and measures soil shear strength. It includes a torque transmission member on which an electrical transducer is mounted; and a housing which surrounds the transmission member and defines an annular cavity which protectively surrounds the transducer.

REFERENCES:
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patent: 3364734 (1968-01-01), Wilson
patent: 3465576 (1969-09-01), Spanski
patent: 3561259 (1971-02-01), Barendse
patent: 3691825 (1972-09-01), Dyer
patent: 3709031 (1973-01-01), Wilson et al.
patent: 3717029 (1973-02-01), Tveter
patent: 3855853 (1974-12-01), Claycomb
patent: 4398414 (1983-08-01), MacGregor
patent: 4411160 (1983-10-01), Lutenegger
Oberg, "The Determination of Stresses in Oil Well Casing in Place", Jan. 1950, API Paper.

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