Apparatus for obtaining a soil core sample

Details Apparatus for obtaining a soil core sample Apparatus for obtaining a soil core sample

1995-01-10

1995-12-12

Novosad, Stephen J.

Boring or penetrating the earth

Boring without earth removal

Combined with earth removal

7386444, 175 58, E21B 4902, G01N 108

Patent

active

054741416

ABSTRACT:
Soil sampling apparatus for forming and containing a core sample of a predetermined depth of soil into which the soil sampling apparatus is driven. A pair of cooperable, core-defining core tube members are carried on a guide rod and are individually and sequentially driven into the soil to be sampled. The core tube members include angularly positioned panels for increased torsional rigidity, and the apparatus includes a cam and follower arrangement for permitting automatic circumferential orientation of one core tube member relative to the other core tube member before interengagement of the core tube members to define a complete core tube. The core tube members are each pointed at their lower ends to more easily penetrate the soil, and one core tube member includes a pivotable soil sample gate to retain the soil sample within the core tube as the core tube is withdrawn from the soil.

REFERENCES:
patent: 828527 (1906-08-01), Ankeny
patent: 1919461 (1933-07-01), Burke et al.
patent: 3667553 (1972-06-01), Gill

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