Multi-level sampling device

Details Multi-level sampling device Multi-level sampling device

1993-01-28

1994-05-03

Dang, Hoang C.

Boring or penetrating the earth

Boring without earth removal

Combined with earth removal

7386464, 175 58, E21B 4902

Patent

active

053078845

ABSTRACT:
Multi-level sampling device including compartmentalized longitudinal member for lowering into loose-material to be tested at multiple levels providing for individual containers to be simultaneously filled at each respective level through a retraction of covering lids to accommodate pouring of the material into the containers followed by closing the lids and retracting the sampling device for inspection of the material in each respective container.

REFERENCES:
patent: 3036638 (1962-05-01), Parsons
patent: 4359110 (1982-11-01), Peterson
patent: 4383583 (1983-05-01), Baker
patent: 5135058 (1992-08-01), Millgard et al.
patent: 5209129 (1993-05-01), Jaselskis et al.

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