Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Patent
1987-08-24
1988-12-13
Novosad, Stephen J.
Boring or penetrating the earth
Boring without earth removal
Combined with earth removal
173 90, 173128, 175135, E21B 1102, E21B 2500, E21B 4902
Patent
active
047903929
ABSTRACT:
An improved soil sample core extraction tool including a handle member having a soil probe member movable within its longitudinal socket, and having a clutch means for selectively providing for extension, retraction and prevention of movement of the soil probe member with respect to the handle member so that the soil probe member can be inserted into the soil, and retracted with a soil sample, the handle member including a selectively usable jack which assists in retracting the soil probe member from the soil by incrementally lifting the handle member while the soil probe member is engaged by the clutch means, the jack including an extension arm to provide leverage for the jack. The soil probe member is elongated in length and allows for a continuous soil sample to be received in a hollow receptacle within the interior of the soil probe member. A hammer member having a rod with a collar, and a hammer section slidable on the rod, cooperates with the soil probe member to allow a hammer to assist in forcing the soil probe into the soil. A connection assembly allows an extension tube to be removably secured to the soil probe member.
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