ANTIROTATIONSVORRICHTUNG FÜR BOHRLOCHWERKZEUGE

In an apparatus (20) for use in a borehole of a type comprising a rotatable shaft (24) and a housing (46) for rotatably supporting the shaft therein, a rotation restraining device (252) is associated with the housing (46) for restraining its rotation. The device (252) includes a plurality of rollers...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	RESTAU, BRYAN JAMES, CARGILL, EDWARD-JAMES
Format:	Patent
Sprache:	ger
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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