Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Patent
1997-05-12
1999-07-13
Dang, Hoang C.
Boring or penetrating the earth
Boring without earth removal
Combined with earth removal
175 58, E21B 4902
Patent
active
059213280
ABSTRACT:
An apparatus for obtaining subterranean soil samples includes an elongated housing having a passageway extending longitudinally therethrough, a tip assembly movable through the passageway, and a locking device for releasably preventing the tip assembly from moving from a first portion of the passageway to a second portion of the passageway. The sampling method includes the steps of inserting the sampling apparatus into the ground, unlocking the tip assembly, pulling the tip assembly through the passageway and retaining the tip assembly in the second portion of the passageway. A device is provided for creating a vacuum pressure above the sample material as the tip assembly is retracted and for retaining the sample material in a sample chamber.
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Babineau James W.
Blouin Scott E.
Shinn, II James Garfield
Applied Research Associates, Inc.
Dang Hoang C.
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