In-place soil sampler

Details In-place soil sampler In-place soil sampler

1990-06-25

1992-04-07

Noland, Tom

Boring or penetrating the earth

With means movable relative to tool to receive, retain, or...

Core-retaining or severing means

175 58, E21B 4902

Patent

active

051019175

ABSTRACT:
An in-place soil sampler assembly includes an outer barrel or tube coupled to a corer point at one end thereof. An inner samping tube is contained within the outer tube. A soil sample retainer has a support ring connected to one end of the inner sampling tube. The support ring carries a plurality of flexible arcuate leaves each having a base portion secured to the ring and each having an apex moveable with respect to the support ring between opened and closed position. A collar is mounted at the end of the outer tube to form a cavity for receiving the soil sample retainer when the leaves are opened for passage of a soil sample from the corer point into the inner sampling tube; the leaves are closed when the support ring is removed from the cavity so as to form a convex soil sample support surface facing in the direction of the inner sampling tube for holding a soil sample therein. The inner sampling tube and soil sampler retainer are removable from the outer tube as a unit while the outer tube remains in place to avoid disturbing soil samples taken from succeeding core sections.

REFERENCES:
patent: 1655644 (1928-01-01), Baker
patent: 2126684 (1938-08-01), Humason et al.
patent: 2314352 (1943-03-01), Hoffoss
patent: 3092192 (1963-06-01), Deely
patent: 3363705 (1968-01-01), Jensen
patent: 3630296 (1971-12-01), Bullard
patent: 3768580 (1973-10-01), Mann et al.
patent: 3807234 (1974-04-01), Duperon
patent: 4667754 (1987-05-01), Diedrich
patent: 4916945 (1990-04-01), Weisbrod
patent: 4946000 (1990-08-01), Gibson et al.

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