FLEXIBLE HOOD MEANS

The system comprises an enclosure for enveloping a portion of drill rod used with an earth drilling machine the enclosure having only one side opening formed therein for coupling to a source of suction. The enclosure has axially aligned holes formed in the top and bottom thereof for admitting drill...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	GYONGYOSI L,US, GREGORY D,US
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	The system comprises an enclosure for enveloping a portion of drill rod used with an earth drilling machine the enclosure having only one side opening formed therein for coupling to a source of suction. The enclosure has axially aligned holes formed in the top and bottom thereof for admitting drill rod therethrough for address to the earth; and at least one "floating" type seal disposed about the drill rod for tracking radial excursions of the drill rod during drilling. A baffle plate fixed to the enclosure prevents the travel of large earth cuttings to the source of suction. Further, a flexible hood is carried about the enclosure, and is movably mounted for elevation from the ground area and for lowering thereto to prevent an escape of earth cuttings dust.