Boring or penetrating the earth – With signaling – indicating – testing or measuring – Indicating – testing or measuring a condition of the formation
Patent
1997-06-18
1999-08-03
Dang, Hoang C.
Boring or penetrating the earth
With signaling, indicating, testing or measuring
Indicating, testing or measuring a condition of the formation
73 84, 73784, 166212, 16625001, 175 58, E21B 4900
Patent
active
059312378
ABSTRACT:
An apparatus for securing a soil testing device and other attachments necessary for soil testing near the bottom of a borehole uses a pair of clamps with gripping teeth that interlock with similar gripping teeth in the internal wall of the auger. The lateral movements of the clamps toward the auger are controlled so that the soil testing device is maintained in a proper orientation with respect to the soil sample and to avoid uncontrolled engagements of the clamps with the auger.
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Henke Robert
Henke Wanda
Minor Malcolm C.
Dang Hoang C.
Dynamic In Situ Geotechnical Testing, Inc.
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