Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure
Patent
1988-02-01
1989-04-18
Dang, Hoang C.
Boring or penetrating the earth
With tool shaft detail
Helix or helically arranged structure
285330, 285913, E21B 1722
Patent
active
048218189
ABSTRACT:
The present invention comprises first and second auger sections having upper and lower ends. The lower end of the first auger section is detachably secured to the upper end of the second auger section. The lower end of the first auger section includes a collar having axially extending indentations and projecting therein. The upper end of the second auger section includes a similar collar having axially extending projections and indentations therein. The two collars are matingly interlocked to prevent rotation of the augers sections with respect to one another. A detachable coupler surrounds the interlocked first and second collar means and holds them against axial movement away from one another. A seal causes the two ends to be sealed with respect to one another so that fluid cannot enter the internal bore of the tube sections. One modified form of the invention comprises using laser cut slots which extend axially in the tube of the auger section so as to permit fluid to enter the internal bore of the auger section.
REFERENCES:
patent: 1054812 (1913-03-01), Zierath
patent: 2195492 (1940-04-01), McDonald
patent: 3190377 (1965-06-01), Rassieur
patent: 3206936 (1965-09-01), Moor
patent: 3240513 (1966-03-01), Turzillo
patent: 3794127 (1974-02-01), Davis
patent: 3796448 (1974-03-01), Rinshamp
patent: 3967837 (1976-07-01), Westerlund et al.
Dang Hoang C.
Micro Specialties Co., Inc.
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