Boring or penetrating the earth – Enlargement of existing pilot throughbore requiring...
Patent
1991-11-08
1993-07-27
Dang, Hoang C.
Boring or penetrating the earth
Enlargement of existing pilot throughbore requiring...
166 68, 166105, 166312, 175 62, 175102, 175324, E21B 728
Patent
active
052303888
ABSTRACT:
An apparatus for removing debris from a bore hole comprises a housing having apertures formed therein such that rotation of the housing causing entrapment of the cuttings from the bore hole. The positive displacement pump comprises a rotor surrounded by a stator coupled to the housing such that rotation of the stator rotates the housing. The positive displacement pump is operable to pump material from the housing responsive to relative movement between the rotor and stator. A motor rotates the stator, thereby cleaning the bore hole.
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Cherrington Corporation
Dang Hoang C.
Lintel Alan W.
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