Soil drill rod extractor

Details Soil drill rod extractor Soil drill rod extractor

2006-09-12

2006-09-12

Tsay, Frank S. (Department: 3672)

Boring or penetrating the earth

With signaling, indicating, testing or measuring

C254S020000

Reexamination Certificate

active

07104343

ABSTRACT:
A rod extractor for ground drill rods having a drill rod (20) with a plurality of rod threads (23) at its upper portion, about which an extraction collar (30) with internal threads rotates slidably with said rod threads. A guide sleeve (51) having a sleeve opening is attached perpendicular to a ground plate (50) which rests on a ground surface. Said rod travels through said sleeve opening into the ground, upon which an extraction tool (40) rotates said collar about said rod resulting in downward travel of said collar in relation to said rod and sleeve until said collar contacts said sleeve. Further rotation of said collar results in upward force upon said rod, extracting it from the ground.

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patent: 6431006 (2002-08-01), Henke

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