Apparatus for compensating movements of an apparatus for measuri

Details Apparatus for compensating movements of an apparatus for measuri Apparatus for compensating movements of an apparatus for measuri

1974-07-09

1976-06-29

Gill, James J.

Measuring and testing

Hardness

By penetrator or indentor

G01N 300

Patent

active

039657280

ABSTRACT:
An apparatus for use in soil sounding in which a probe is mounted on a vehicle includes an improved simple device for monitoring the displacement of a reference surface from the ground level in order to provide an accurate indication of the position of the probe. One sensor indicates the displacement of the probe and the reference surface, which displacement is greater than the actual displacement of the probe into the ground. Another sensor indicates the displacement of the reference surface relative to the ground, these displacements being imputs to a subtractor which provides an output representative of the true displacement of the probe relative to the ground level.

REFERENCES:
patent: 2280592 (1942-04-01), Mieux
patent: 2650432 (1953-09-01), Adams
patent: 3001396 (1961-09-01), Cleveland
patent: 3600939 (1971-08-01), Steele et al.
patent: 3660904 (1972-05-01), Steele et al.

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